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Publications of the Astronomical Society of the Pacific 92:609-647, October 1980

Publications of the Astronomical Society of the Pacific 92:609-647, October 1980

COLOR EXCESSES OF CLASSICAL CEPHEIDS. II

KENT A. FELTZ, JR. AND D. H. Me NAM ARA Department of Physics and Astronomy, Brigham Young University Beceived 1980 July 15

New photometric data in the uvbyß and (khg^) systems are presented for 41 cepheids. Intrinsic relations are estab- lished, using the color indices determined from field of five cepheids, which allow color excesses to be obtained for the other 36 variables by means of curve-matching techniques. It appears that serious systematic errors are present in previously published color excesses. Key words: cepheids—photometry—color excesses

I. Introduction For a single observation (V ^ 9m) the internal prob- Feltz and McNamara (1976, hereafter referred to as able errors of the observations are: y, ± 0^04; (b — y), ± Paper I) have determined the space reddening of eleven (m)09; mv ± (m)23; cv ± 0^19; β, ± 0^11; {khg2\ classical cepheids, namely η Aquilae, U Aquilae, TT ± (mm Aquilae, FF Aquilae, RT Aurigae, X Cygni, SU Cygni, It is important to be aware that the standard uvbyß DT Cygni, f Geminorum, S Sagittae, and Τ Vulpeculae photometric system was set up primarily for securing from photometry of B, A, and F stars in the direction of photometry of B, A, and F stars (Strömgren 1963; Craw- these variables. The reddening of δ Cephei has been ob- ford 1964). The cepheids are generally more luminous tained in a similar fashion (Feltz 1976). In order to ex- and cooler than typical standard stars. In addition, some tend our knowledge of space reddening to additional ce- of the cepheids are heavily reddened. The standard stars pheids, without recourse to the above procedure, it is 61 Cygnus A and Β, β Draconis, HR6418, and HR6705 necessary to obtain viable correlations between temper- generally anchored the cool end of our standard- net- ature-dependent indices and the intrinsic colors (b — y)0 work, and hence, to a great extent were dominant in de- or (B — V)0 of the variables. Implicit in this requirement termining the slopes of the transformation equations re- is the assumption that there is sufficient similarity among lating instrumental color indices to standard color the cepheids so that general calibration schemes can be indices. No doubt some nonlinearities (perhaps multi- developed and applied to the entire group. In this paper values) between standard and instrumental photometric we will examine this assumption from a photometric systems can be introduced by utilizing filters with point of view using new uvbyß and {khg2) data and will slightly different transmission characteristics (half width, derive new reddening values for 41 cepheids. for example), especially in spectral regions where line blanketing is strong. Our uvby filters are Schott filters II. Observations that, according to the manufacturer, are "similar" to the The Brigham Young University 61-cm (24-inch) tele- original filters used to set up the standard uvby photo- scope, equipped with a sky-compensating photometer, metric system. It would be desirable to utilize a set of including a 1P21 photomultiplier, cooled with dry ice, standard stars similar in their physical properties to the was used to secure uvbyß and {khg2) photometry on 41 cepheids. Although this was not feasible we were able to cepheids north of —21° and brighter than transform instrumental indices of such stars as a Persei 111^ at minimum light. Photometric data for each of the and β Dra to standard values that agree well ( ± Ο'ίΌΙ) 41 stars are listed in the Appendix. The stars are listed with their catalog values. Both of these stars have (b — y), alphabetically with the period of each variable noted to mv and c1 values similar to cepheids at certain phases. the right of the name. Each observation is tabulated ac- Typical cyclic variations of 12 stars (η Aql, U Aql, TT cording to the Julian Date and phase, with y (= V), Aql, FF Aql, RT Aur, δ Cep, X Cyg, SU Cyg, f Gem, S (b — y), mv cv β, and (khg2) given in subsequent columns. Sge, and Τ Vul) are shown in Figures 1, 2, and 3. The The {khg2) index is defined by radiation transmitted phases given for each observation listed in the Appendix through narrow-band filters centered at the Ca Κ line, have been computed from the epochs and periods com- HS line, and G band. It is primarily temperature depen- piled in the 1969 edition of the General Catalogue of dent, but is influenced by and metal abun- Variable Stars (GCVS). Although we have tried to make dance and has been described by Feltz (1972). A network the transformations from our instrumental indices to of standard stars was used each night to reduce the in- standard indices as carefully as possible some systematics strumental magnitudes and color indices to standard val- may have been introduced into our photometry by indi- ues. vidual peculianties of our filter set—particularly the υ

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 610 FELTZ AND McNAMARA

-ι 1 i—i 1 1 1 1 1 1 r I I 1 1 1 1 1 1 Γ CM< 0.31- 0.5 b-y 0.7[ 0.9 fi ti I.I η AOL U AOL

0.5 0.5 tt tt m. 0.1 0.0 0.3 0.2 ti o 2.7 2.7 Ρ 2.6 2.6 ti ti 1.8 Ι.Θ

khg2

2.3 2.3 *n 3.5 6.0

4.5 7.0

0.7 0.3 b-y I.I 0.7 « ti Τ Τ AOL FF AOL 1.0 1.2

0.4 0.6 (i m, 0.1 0.0 0.3 -0.2 a n o 2.7 2.7 Ρ 2.6 2.6 t φ 2.0 1.8

khg2

3.0 -2.3 tt ti 6.5 -5.0

7.5 -6.0 J 1 1 1 I I I I I I J I I I lili 0.6 0.8 0.0 0.2 0.4 0.6 0.6 0.8 0.0 0.2 04 06 PHASE

FlG. 1—Cyclic variations of the color indices (b — y), mv ß, {khg2), and magnitude y = V of the cepheids η Aql, U Aql, TT Aql, and FF Aql.

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 611

I I 1 1 I I I 1 1 1 1 1 1 1 1 Γ-Τ 1 1 1 Γ 0.-2 0.3 b-y 0.6 0.7 a RT AUR I.I S CEP

0.5 0.5 tt m, 0.1 0.2 0.3 0.4 H fi ο2-7 2.7 Ρ 2.6 a tt 1.6 1.7

khg2

2.1 2.2 i 5.0 3.5 y 6.0 4.5

0 5 0.2 b-yκ · 0.9 0.6 tt 0.9 X CYG SU CYG l.l

0.3 0.5 fi m, 0.2 0.1 0.4 0.3 a o 27 2.7 Ρ 2.6 .· .V 2.6 M tt 2.1 1.4

khg2

2.6 1.9

6.0 6.5

7.0 7.5 J I I I I I I I I L J L· 0.6 0.8 0.0 0.2 0.4 0.6 0.6 0.8 0.0 0.2 0.4 0.6 PHASE

FlG. 2—Cyclic variations of the color indices (b — y), c1, m1, ß, {khg2), and magnitude y = V of the cepheids RT Aur, 8 Cep, X Cyg, and SU Cyg.

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 612 FELTZ AND McNAMARA

"1 1 1 1 1 1 Γ I I η Τ 1 1 Γ Τ 1 1 Γ CM< 0.2 0.3 b-y 0.6- 0.7 ii tsi DT CYG ζ GEM I.I 0.9

0.5- 0.3 α m, 0.1 0.3 0.3 0.5 fi β2·7 2.7 " 2.6 2.6 fi 1.6

khg.

2.1 -2.6 Íii i 5.01- 3.5

6.0 4.5

0.4 '••ι 0.2 b-y 0.8 0.6 S SGE Τ VUL I.I l.l

0.5 0.5

m, 0.1 Ó.I 0.3 0.3 Vi fi o2·7 2.7 Ρ 2.6 -2.6 fi φ 2.0- 1.7

khg2

2.5 -2.2 αi 5.0- 5.0

6.0- 6.0 J L· J I I I I I L· -I L. -I I L· 0.6 0.8 0.0 0.2 0.4 0.6 0.6 0.8 0.0 0.2 0.4 0.6 PHASE

FlG. 3—Cyclic variations of the color indices {b —y), mv ß, {khg2), and magnitude y = V of the cepheids DT Cyg, f Gem, S Sge, and Τ Vul.

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 613 and possibly also the b filter. If systematic errors are triangles), are shown. It is evident in all three plots that present they would be most likely found in the m1 and c1 the data of the three short-period stars, RT Aur, DT values. Cyg, and Τ Vul, fall very close to one another suggesting III. Intrinsic Relations the three stars are very similar in metal abundance and We begin by assuming that similarities of cepheids ex- . The [c1] index should be larger at a giv- tend to their photometric behavior during declining en temperature for stars of lower surface gravity. This light. This implies that it should be possible to predict appears to be the case (X Cyg data) in the and intrinsic color indices such as {b — y) or (B — V) from red- [khg2\>[c1] plots. The opposite is true in the /^[cj dia- dening-free indices such as [mj, [c1], [khg2], and β. A gram. In our view this is due to the tendency of all clas- test of this assumption can be made for those stars for sical cepheids near maximum light to have similar H-line which the reddening has been determined independently intensities. from field stars or by comparing reddening-free indices Note that the data for SU Cyg and AW Peg depart of stars of similar period. markedly from the data plotted for the other stars, par- Plots of the declining-light data [mj — m1 -\- ticularly in the [khg2\>[c1] diagram. The displacement be- 0.35(b —y), β, and [khg2\ = (khg2) — 0A4(b — y) versus comes greater near light minima where the B-com- [cj = Ci — 0.20(b — y) for DT Cyg, RT Aur, Τ Vul, ζ ponents contribute more to the total light. The {khg2) Gem, and X Cyg are displayed in Figure 4. In addition, index is a particularly useful tool in identifying cepheids the declining-light observations of two stars with B-type with blue companions. components, SU Cyg (solid squares) and AW Peg (solid The data plotted in Figure 4 are typical of the cephe- id population. Other data, not plotted to avoid cluttering the diagrams, exhibit some interesting anomalies. U Aql 0.7 Β + DT CYG 2.5 displays a small departure, in the same sense as SU Cyg □ RT AUR 3.7 X Τ VUL 4.4 and AW Per, from the standard curves of seven-day ce- Β t GEM 10.2 pheids. FF Aql and a Ursae Minoris depart very slightly X CYG 16.4 S from the standard relations in the opposite sense. h] V" It is of interest to note that S Sge, also a known bi- + x +# + nary, is not anomalous in any of the mean color-color re- X lations. The secondary component is evidently too faint 0.2- ▼ to make a significant contribution to the combined flux H 1 1—-—I 1 H H H of the two stars in the spectral regions in which the ob- 2.7 ■ SU CYG 3.8 servations were secured. The {khg2) observations of TT f AW PER 6.5 Aql are ^ 0^3 larger near light minimum than stars of similar period. The data are very scanty and the star is being reobserved to check this. + Χ We have established four intrinsic color-color rela- Β tions for the purpose of deriving color excesses. The Β □ (m1)0 and (c1)0 values (reddening free) of RT Aur, DT 2.6 Cyg, Τ Vul, ξ Gem, and X Cyg are plotted against Η 1 1 1 1 1 1 1 h (b —t/)o in Figure 5; β and {khg2)0 are plotted against Β Β {b — y)0 in Figure 6. The key to the symbols in each dia- 2.2 gram is the same as given in Figure 4. Note that X Cyg was added to the original cepheids that we considered to have accurate color data from field-star measurements. XD Seven of the 41 cepheids investigated have periods long- [khg ] er than ζ Gem (P = 10?2), thus reddening-free data on a 2 Β + χ longer-period star (X Cyg) were necessary. In Paper I we + D found E{b — y) = 0^255 for X Cyg; by correcting an er- τ- ▼ ■ + ror in our published magnitude of field star 7 (V = 11 ^8) and also including the color-excess data of 1.5- Schmidt (1975) our color excess of X Cyg is reduced to -I 1 1— 0^24, which we adopt as the best value. 0.2 Ο·6 [c,] 1.0 An examination of the declining-light data of the five Fig. 4—Plots of the declining light indices [m1], β, and against [cj for seven cepheids. The indices are reddening free. SU Cyg and standard stars of Figures 5 and 6 shows excellent agree- AW Per have B-type components. ment in the and

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 614 FELTZ AND McNAMARA

Β 2.70 V BB SGR 6.6 ▼ AW PER 6.5 Δ X VU L 6.3

+ □ 2.65 X+ Β V ▼ Β

Η Β V Ο Τ Χ Β 2.60 Β V H H

1.2 2.8

1.0- 2.4 c,

0.8 khg2

2.0- 0.6-

0.4 1.6 -ix. 0.3 0.5 0.7 0.9 1.1 0.5 0-7 b.y 0.9 I.I b-y Fig. 6—The color excesses E{b — y)ß and E{b — y)khg2 are found by slid- Fig. 5—Intrinsic relations m^ —i/) and c^h — y) defined by the ce- ing along the reddening lines and fitting to the intrinsic relations de- pheids DT Cyg, RT Aur, Τ Vul, ζ Gem, and X Cyg (symbols defined in fined by the calibrating cepheids. The symbols are identified in Fig- Fig. 4). The reddening of these five cepheids has been determined ures 4 and 5. The reddening arrow for β is horizontal and is not shown. from field-star data (see text). The reddening {E(h — y) of the three ce- The slope of the reddening line for {khg2) is given by the equation pheids BB Sgr, AW Per, and X Vul is found by sliding the data back E{khg ) = 0A4E{b — y). along the reddening lines to fit on the curve defined by the five stan- 2 dard cepheids. The slopes of the reddening lines are given by the pendix in the four diagrams depicted in Figures 5 and 6. equation £(/7^) = -0.035£(b-f/) and £(^) = 0.20E{h-y). The color excess is obtained by projecting the observed data points back along the reddening lines shown in the ikhg2)o>(b-y)o diagrams. A systematic displacement of figures to the intrinsic relations established from our five the stars of longer period to larger {b — y)0 values is evi- basic cepheids. Observational data of three cepheids (BB dent in the {c1)0,(b — y)0 and ß,{b — y)0 plots. The latter Sgr, AW Per, X Vul) with periods of about 6?5 are result is expected since most cepheids have similar H- plotted to illustrate the technique. Some interpolations line intensities regardless of period. and extrapolations among the five fundamental calibrat- The close agreement of the data of the shorter-period ing cepheids, particularly in the c^b — y) and ß,{b — y) cepheids in Figures 5 and 6 strongly support our basic diagrams was necessary to ascertain the color excesses of assumption that the cepheids are, for the most part, stars that differed markedly from the calibrating cephe- physically and photometrically similar at a given period, ids in period. and furthermore suggest that the color excesses of the Color excesses determined in the above manner (using calibrating cepheids have been determined to an accu- three or four normal points on the descending branch of racy of ^ 0^1 from the field stars. the light curves) are listed in Table I. The third, fourth, Color excesses, E{b — [/), can now be found for all the fifth, and sixth columns list the color excesses, in E{b — y), cepheids by plotting the observational data from the Ap- determined from the m^b — y); cl9(b — y); ß,{b — y); and

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 615

TABLE I TABLE II Color Excesses of Cepheids Color Excesses of Selected Cepheids Cepheid E{b-y)m E{b~y)c E{b-y)o E{b-y)khg Paper I This Paper n Aql Cepheid E(b-y) U Aql 0.35 0.38 0.33 0.34 0.33 m SZ Aql 0.52 0.53 0.52 0.52* 0.50 CK120 0M3m. -0.01 TT Aql 0.41 0.40 0.41 0.39 0.43* η Aql FF Aql 0.19 0.17 0.21 0.22 0.18 U Aql 0.275 0.35 -0.07 TT Aql 0.405 0.41 -0.01 FM Aql 0.51 0.54 0.49 0.50 0.51 FN Aql 0.41 0.42 0.39 0.44 0.42 FF Aql 0.205 0.19 +0.01 V496 Aql 0.36 0.37 0.35 0.40 0.34 δ Cep 0.100 0.06 +0.04 RX Aur 0.23 0.26 0.23 0.19 0.23 SU Cyg* 0.100 0.06 +0.04 SU Cas 0.22 0.21 0.22 0.22 0.23 S Sge 0.090 0.11 -0.02 TU Cas 0.05 0.04 0.05 0.06 0.07 δ Cep 0.06 0.05 0.07 0.06 0.05 SU Cyg 0.06* 0.08* 0.04* 0.06* 0.07* * Binary (blue companion). VZ Cyg 0.22 0.24 0.23 0.20 0.20 V532 Cyg 0.44 0.43 0.44 0.48 0.43 star value, E(b — y) = 0^10, is to be preferred. Gem 0.25 0.26 0.24 0.25 0.26 This leaves two stars, δ Cep and U Aql, with signifi- Lac 0.30 0.30 0.30 0.31 0.30 Lac 0.20 0.20 0.18 0.22 0.20 cant discrepancies. A concentrated effort was made Lac 0.32 0.32 0.33 0.34 0.31 (Feltz 1976) to define the reddening in the field of BG Lac 0.27 0.26 0.26 0.29 0.27 δ Τ Mon 0.16 0.14 0.15 0.18 0.19 Cep. Unfortunately, the reddening gradient is rather Y Oph 0.52 0.52 0.55 0.50 0.50 steep at the approximate distance of the variable, and AU Peg 0.13 0.11 0.10 0.23 0.12 AW Per 0.41* 0.48* 0.38* 0.39* 0.40* furthermore the reddening across the field is not uni- S Sge 0.11 0.11 0.13 0.12 0.09 form. The Β star BD +5702547 is only 39^ from the var- U Sgr 0.32 0.31 0.34 0.31 0.32 Y Sgr 0.18 0.18 0.19 0.19 0.17 iable, but it is nearer to us than is the cepheid; the color YZ Sgr 0.24 0.25 0.25 0.21 0.25 excess of the Β star {E{b — y) = 0^4) suggests that the BB Sgr 0.25 0.24 0.25 0.25 0.25 V350 Sgr 0.24 0.24 0.23 0.25 0.23 reddening of δ Cep is at least 0^4. Since there is a SS Set 0.28 0.28 0.28 0.30 0.27 greater uncertainty in the value obtained from the field SZ Tau 0.25 0.26 0.23 0.23 0.26 stars, the reddening of 0^6 found for Cep in our pres- α UMi 0.01 0.01 0.02 0.02 0.00 δ U Vul 0.51 0.52 0.51 0.54 0.49 ent study is to be preferred. The large disagreement in X Vul 0.69 0.72 0.70 0.65 0.65 the color excess values for U Aql in Table II may in- SV Vul 0^45 0^46 0^47 0^44 dicate that the measured field stars do not satisfactorily *0btained at maximum light. describe the reddening gradient at the position of the variable. Consequently, the excess of 0^35 for U Aql de- (/chg¿),(b —t/) calibrations, respectively. The second col- rived from our calibration schemes is to be preferred at umn lists the average value, {E(b — y)), of the four deter- this time. We also note that the color excess of a UMi minations; the color excess deduced from β has been giv- {E(b — y) = (mn) determined from the calibration curves en half weight. agrees very well with the value (E{B — V) = 0.00 ± A graphical display of the differences of the individual 0.01) found from a nearby (19^) companion star determinations from the mean value, as a function of the (McNamara 1969; Schmidt 1971; Turner 1977). mean value, is shown in Figure 7, where the notation has Figure 8 shows the amplitudes of the intrinsic indices been simplified somewhat (see figure caption). Note that as a function of period. Individual cepheids can be iden- in general the differences are small (typically < 0^5) tified using the log? values listed in Table III, for pur- and no systematics appear in the differences except for poses of clarity we have exaggerated the log Ρ difference possibly E(b — y) > 0^45. The mean error in a typical between SZ Aquilae and Y Ophiuchi, the period of the mean color excess, {E{b — y)), of Table I is approx- latter being plotted as a relatively larger value. Three imately O'POl. cepheids are identified in the {khg2) section of the dia- An independent check on the accuracy of the color gram. The two binaries, SU Cyg and AW Per, have al- excess values of Table I can be made by comparing the ready been discussed; the most disparate case is AU Peg. color excess values of seven stars of the table with color Although it is classified as a W Virginis variable in the excess values determined from field stars. The com- GCVS, its photometric behavior in the uvbyß system is parison is made in Table II, where the color excesses de- quite different from other W Vir variables. termined from field stars are taken from Paper I and With the exception of the beat-period cepheid TU Feltz (1976). The agreement is very satisfactory (differ- Cassiopeiae (second set of data from the left in Fig. 8) ences < 0^2) for four stars; η Aql, TT Aql, FF Aql, and none of the cepheids have {b — y)0 values < 0.20. We S Sge. We have already noted that SU Cyg has a blue will discuss TU Cas in more detail in a subsequent paper companion and consequently the color excess is some- describing photometry of all the bright beat-period ce- what underestimated in the color-color plots. The field- pheids. These objects appear to reach a higher temper-

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 616 FELTZ AND McNAMARA

0.1

E(m)-

-0.1

0.1

E(c)-

-0.1

0.1

E(/8)- 0E(b-y)>

-0.1 Ι-

Ο. I

E(k)-

-0.1

0.2 0.3 0.4 0.5 0.6 Fte· 7—A graphical display of the data of Table I showing the general agreement of the various color excesses, relative to the mean, used in calculating the adopted mean value {E{b — y)). E{m), E{c), E(ß), E{k) are the color excesses expressed in terms of E{b — y) determined from the cv β, and {khg2) indices, respectively. ature at times near maximum light than the normal ce- column of Table I it is necessary to make transforma- pheids. Otherwise their photometric indices are similar tions among the various color-index systems. We adopt to the indices of normal cepheids at a given {b — y)0 val- Schneider's (1969) transformation of £(G —I) to E{B — V) ue. for stars with (G — I) measures. Plotting (B — V) (Mitchell In order to make a comparison of the color-excess data et al. 1964) and (P—V) (Kron and Svolopoulos 1959) in the literature with the values tabulated in the second against our (b — y) values (all taken at maximum light)

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 617

I I 1 1 I Γ" I I I 0.7 (m, 0.4

, ι II V II ι 0.1 H 1 1 H H H H 1 1 1 1 1- 1.4 (c,). 0.8 '' I'"i Ii (ι 11 ¡i 0.2 Η 1 1 1 1 1 1 1 1 1 1 1 H 2.76 ß 2.67 il

2.58 H 1 1 1 1 H H 1 1 1 1 1 h 2.9

(khg2)0 < 2.0 ,ιΐΛΐΙ

1.1 < H h Η 1 H _| 1 1 1 1 1- 0.7 (b-y), 0.4 i| \·\\\\\\

0.1 0 0.5 0.8 I.I 1.4 1.7 LOG Ρ FIG. 8—A plot of the amplitudes of the intrinsic indices of the cepheids as a function of period. Individual cepheids can be identified by means of the log? values given in Table III. The two binaries, SU Cyg and AW Per, and also AU Peg, are identified in the {khg2) part of the figure. Log Ρ for Y Oph has been arbitrarily increased relative to SZ Aql to allow them to be distinguished in the diagram. for stars in common provides the other needed con- serious systematic errors in E(b — y) are present. The fig- versions. These relations are ure shows that the excesses obtained by other in- vestigators for cepheids suffering small reddening are E(b-y) = 0.72 E{B-V) = 0.83 E{P-V) generally too large compared to ours. Again, our calibra- tions are based on five cepheids, four of which are red- = 0.38 E{G — I) . dened no more than Ο'ίΌβ. On the other hand, excesses of Reddening data, transformed to E{b — y), from a vari- the highly reddened cepheids are generally largely un- ety of sources for all 41 cepheids are given in Table III. derestimated relative to our own. Our results show the These data are presented in the form of differences, closest agreement with those of Williams (1966) and Eib~y)others - {Eib-y)) in the fourth through six- Nikolov (1967). Color-excess data (of others) based on teenth columns where {E(b — y)) values are listed in the UBV photometry of the cluster cepheids have been mod- third column. The values are tabulated in hundredths of ified (Femie 1963). a magnitude. A graphical representation of the data of Factors such as observational error and the existence Table III is given in Figure 9, where it is evident that of duplicity undoubtedly contribute to the scatter in the

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 618 FELTZ AND McNAMARA

TABLE III Color Excess Comparison

Cepheid log Ρ GE* WMO* KS Kra Mia Wi 1 Nik Snr Kel PB Smt Mak TY n Aql 0.856 0.13 03 02 05 00 03 -03 -05 05 03 00 -04 -01 U Aql 0.846 0.35 04 -04 -05 -07 01 -09 -07 -08 -07 SZ Aql 1.234 0.52 -10 -11 -04 -10 -12 TT Aql 1.138 0.41 -04 -04 -03 -02 -05 -02 FF Aql 0.650 0.19 03 03 05 06 01 02 04 10 03 -06 00 -01 -01 FM Aql 0.786 0.51 -05 -03 07 -02 05 FN Aql 0.977 0.41 02 05 02 -03 -02 V496 Aql 0.833 0.36 11 09 -06 -02 05 RT Aur 0.527 0.05 04 08 02 01 -03 02 02 02 04 01 -01 RX Aur 1.065 0.23 06 00 03 -01 00 03 -03 01 SU Cas 0.290 0.22 -05 00 02 00 02 -01 05 -05 04 00 -02 TU Cas 0.330 0.05 -04a -01 06 6 Cep 0.728 0.06 03 07 02 05 02 01 06 04 01 03 01 Χ Cyg 1.214 0.24 06 00 -04 00 -02 06 04 -06 -02 -01 su Cyg 0.585 0.06 03 00 12 09 05 03 05 03 01 a VZ Cyg 0.687 0.22 01 01 02 01 DT Cyg 0.398 0.04 06 04 08 a 04 04 04 -01 11 04 V532 Cyg 0.516 0.44 -02 00 ζ Gem 1.006 0.02 21 08 12 01 01 07 06 02 03 11 02 04 W Gem 0.898 0.25 04 02 -08 -05 02 -04 03 -02 a X Lac 0.736 0.30 -02 -01. -05 -04 15 03 -04 -02 -05 Y Lac 0.636 0.20 -06 03 -10ϋ -11 -05 -05 -08 Ζ Lac 1.037 0.32 00 04. -07 00 -04 -04 -03 BG Lac 0.727 0.27 -01 02 -03 -03 -03 -05 -03 Τ Mon 1.432 0.16 20 15 08 14 05 06 26 -07 02 08 07 Y Oph 1.234 0.52 01 02 -02 10 -07 -03 03 -07 -10 00 AU Peg 0.380 0.13 a 10 AW Per 0.810 0.41 -07 -07 -10 12 -02 -03 -12 -06 S Sge 0.923 0.11 07 04 01 03 00 -06 04 00 -02 01 00 U Sgr 0.829 0.32 01 02 03 08 01 -02 05 -02 -03 -05 Y Sgr 0.761 0.18 01 02 02 -01 -06 -03 -03 -02 YZ Sgr 0.980 0.24 08 08 -01 00 BB Sgr 0.822 0.25 06 -02 00 V350 Sgr 0.712 0.24 -01 00 -02 -01 SS Set 0.565 0.28 -01 04 -04 -06 -02 01 -05 SZ Tau 0.498 0.25 00 02 04 -01 -01 -01 -03 03 -02 00 01 α UM i 0.599 0.01 05 05 04 02 06 00 01 Τ Vul 0.647 0.06 04 07 04 00 03 04 00 00 03 01 01 U Vul 0.903 0.51 -04 08 -06 -06 Χ Vul 0.801 0.69 -19 -14 -11 -13 -06 SV Vul 1.654 0.45 00 -14 02 -25 -11 -06 -05 t Initials or abbreviations at the headings of the fourth through sixteenth columns refer to the following papers: GE-Gascoigne and Eggen(1957); WMO-Walraven, Muller and Oosterhoff(1958); KS-Kron and Svolopoulos (1959); Kra-Kraft(1961) ; Mia-Mianes(1963); Wil-Williams(1966); Nik-Nikolov(1967) ; Snr-Schneider(1969); Kel-Kelsal 1(1971) ; PB-Parsons and Bouw(1971); Smt-Schmidt(1972); Mak-Makarenko(l971) ; TY-Tsarevsky and Yamimova(see Yakimova, Nikolov and Ivanov 1975). Quantities in the fourth through sixteenth columns are color excess differences, E(b-y)ot^ers - , where the values are listed in the third column. The differences are tabulated in hundredths of a magnitude. Transformations used are E(b-y) = 0.73 E(B-V) = 0.84 E(P-V) = (0.73/1.89) E(G-I) (see text). * Obtained from transformed data given by Fernie (1967). a Oosterhoff (1960). b Bahner, Hiltner, and Kraft (1962). c Wampler, Pesch, Hiltner, and Kraft (1961) various diagrams. These factors may vary greatly in sig- for calibrating cepheids or standard stars would also pro- nificance from one line of investigation to another and duce systematic errors in the results. We believe that we may be responsible for the unfortunately large differ- have minimized the systematic errors resulting from un- ences in color excesses obtained by diverse procedures certainties in calibrations based on curve-matching tech- for a given variable. Inaccurate intrinsic colors adopted niques. Furthermore, our intrinsic relations can predict

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 619

! , 1 1 1 1— 1 1 1 ! ^1 WM0 - Nik -

• · : • . * ^ * ■ * .· ··.· 1 1 1 1 1 1 Snr -

1 1 1 1 1 1 -· · 6E -

1 1 1 1 1 1 IS c . • , · · . . . Ί m

1 1 1 1 1 1 1 1 1 1 1 1 • Kra - PB -

1■ 1 1I 1i 1 1 1 1 1 1 1 1 - .. Mia - Smt -

1 1 1 1■ 1 1 1■ · 1 ■1 · 1 1 1 I1 1 1 Wil - Mak -

1 1 1 1 1 1 1 1 1 1 1 1 ' Kel - TY ■

- , ..1.. ,. L L - Λ -J 1 J 1 1 1 1 1 0.1 0.2 0.3 0.4 0.5 0.6 0.1 0.2 0.3 0.4 0.5 0.6 Fig. 9—A graphical display of the data of Table III showing the systematic errors present in published cepheid excesses relative to those obtained in this paper. The vertical scale is the same as in Figure 7, i.e., the interval between tick marks is 0^05 and the data are plotted in the sense £(other) — (Εφ — ιή). Author abbreviations are those of the column headings of Table III. accurate excesses for cepheids reddened by as much as more detail in subsequent papers, indicates that long- 0^40 (TT Aql) as verified by comparison with excesses period variables and short-period variables have similar derived from a study of field stars. The differences be- m1 values at a given (b — y) value. Thus, for chemically tween our results and those of most other investigators homogeneous stars the rrij index is capable of predicting are color-excess dependent. the color excess of cepheids with high precision if an in- Photometry (uvbyß) of cepheids in the peripheral re- trinsic {b — y),m1 relation is available and the ratio of the gions of the Large Magellanic Cloud (LMC) and Small color excess of m1 to the color excess of {b — y) is known. Magellanic Cloud (SMC), which we will describe in Note that the {Tn1)o>{b — y)0 data of X Cyg in Figure 5 is

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 620 FELTZ AND McNAMARA

APPEND1X CU< CePHEIO PHOTOMETRIC DATA

JO PHASE B-Y Ml Cl RETA KHG? 2400000·+

ETA AOL f.Z

40404 • 8430 0 · 0 05 3 . DO 0 · 378 0· 188 0· 985 2 · 688 1.831 40770 • 88 94 0,010 3·50 0.394 0· 1 64 1 ·000 2 · 681 1.839 40806 • 8005 0·0 14 3 · 54 0 · 4 05 0· 134 1 · Ο 3 5 2 · 657 1.810 40763 • 8701 0.032 2 · 6 98 1.854 40469 • 7025 0.05 1 3 · 54 0.394 0· 191 Ο · 933 2 · 662 1.868 4041 9 • 7568 0.083 3· 58 0 · 42 b 0. 173 0.903 2 ·678 1 .90 1 40821 • 7749 0. 100 3 · 6 0 0 ·446 Ο. 193 Ο · 9 3 5 2 ·67 1 1 . 964 41553 • 8110 0. I 03 1.931 40125 • 6729 0. 105 J ·5 7 0 · 4 1 9 0.203 Ο · 899 2 · 652 1.964 40154 • 7056 0. 150 3 · 7 1 0 ·5 1 3 0. 166 0.696 2 ·65 1 2·038 40807 • 7888 0. 152 3· 73 0 ·46 1 0 · 20 2 Ο · 8 32 2 ·652 2*001 40470 • 6868 0· 179 3 · 70 0 ·487 0. 199 0· 795 2· 6 36 2· 141 40434 • 8499 0. 186 3 · 77 0 · 482 0.225 Ο· 758 2· 639 2. 156 39760 • 6299 0.239 0.52 7 0.215 0.733 2.611 40126 • 6868 0.246 3 · 78 0 · 54 1 0.205 0.74 1 2.624 2· 238 40413 • 9180 0.269 3 · 78 0 ·522 0· 208 0.717 2.631 2.245 40808 • 8145 0.295 3.32 0 ·525 0· 190 0.74 3 2.602 2.173 40844 • 7859 0.307 3 · 76 0.531 0· 185 0.750 2.618 2 · 23 1 40765 • 8792 0.312 3 · 73 Ο · 52 7 0 · 2 1 1 0.708 2.628 2· 229 40837 • 72 71 0.323 3 · 75 0 · 5 1 0 0· 2 1 3 Ο · 7 26 2.64 7 2.205 401 05 • 7903 0. 334 3· 78 0 ·5 14 Ο · 24 1 0· 685 2.632 2· 260 40105 • 7958 0.335 3.77 0 .523 0 · 240 Ο · 6 71 2.6 1 1 2·217 40098 • 7180 0.349 3.78 0 · 5 1 5 Ο · 238 0· 699 2.633 2 · 249 40098 • 7229 0.350 3 ·78 0.526 Ο · 2 05 Ο · 7 16 2.617 2.246 40428 • 9241 0.360 3· 85 0.564 0· 255 Ο · 702 2.61 9 2 · 300 40823 • 8035 0.383 3 · 82 0.536 0· 23 1 0.697 2.619 2 · 298 39754 • 6431 0.405 0.567 0· 245 Ο · 64 7 2.603 40156 • 5785 0·4 I 1 3 ·93 0.602 0·23δ Ο ·626 2.613 2· 357 40809 • 7346 0.423 3 ·98 0.569 0· 250 0· 625 2.626 2.299 40099 • 7875 0.498 4· 06 0 ·589 0·287 0.552 2.597 2.333 40099 • 7910 0.499 4 · 04 0 · 6 08 Ο ·26 7 0.567 2.607 2.354 39755 • 6340 0.543 €•601 C ·3 1 2 0.572 2.6 1 1 404C8 • 8250 0.56C 4 · 13 0 ·6 22 0· 29 Ο 0.578 2.626 2 ·408 40 1 14 • 6840 0.574 4.12 0 · 6 2 1 C· 296 Ο · 57 Ο 2.61 1 2.412 40767 • 8262 0.583 4.19 0 ·6 24 0·305 Ο· 529 2.640 2.431 40158 6180 0.696 4.31 0 ·649 0·327 0.528 2.624 2.383 40768 8401 0.724 2.6C1 2.397 40108 • 6764 0.737 4.27 0.639 0.295 Ο · 526 2.621 2.379 40848 • 6970 0.852 4.06 0.534 €.233 Ο · 6 3 4 2.624 2.061 40805 • 8499 0.881 3.97 0 · 5 1 6 Ο · 2 1 1 €•743 2.625 2.039 40762 • 8936 0.896 4.09 0 ·4 99 0· 21 1 Ο ·7 13 2.653 1.986 39772 • 5972 0.907 0 ·499 0« 183 0.763 2.646 40138 « 6062 0.907 3 ·84 0.486 0.190 €•737 2.648 1.981 40798 • 8582 0.907 3 «86 €•492 0· 194 0.729 2.623 1 ·948 4013 1 • 6292 0.935 3· 73 0 · 4 46 Ο ·20 6 €•810 2.654 1.9G0 41552 • 8047 0.963 3 · 66 0 ·409 0.184 0.893 1 ·8 17 4041 1 • 8750 C. 985 3 · 50 0 ·388 0· 164 1 · Ο 34 2.640 1.807

υ AOL 7.0

41510.7632 Ο . Ο € 1 6.02 €.611 — 0.004 1.030 2.660 1.828

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 621

APPEND IX (CCN ΤINUEO) cu JO PHASE Υ Β-Y Ml Cl E6T A KHG2 240COC0·^

U ACL 7« 0 (CCNTÎNUEO)

41496·6167 G«015 6·01 0.596 0.025 1.061 2.697 1.818 41160·7590 0·016 6.16 C.607 0·039 1.067 2.676 411Τ3·T451 0·020 6.00 C.571 0·045 1.067 2.669 1.858 41145·63 06 0.045 6.CO C.58C -0.009 1.011 2.653 1.638 41117·9333 0·074 6·08 0.589 0.057 1.042 2.676 1.937 40099·7486 0·114 6.13 C.623 0.112 €•698 2.662 2.031 40406·6020 0·114 6.15 0.62C 0.115 0.907 2.669 2.065 40099·7549 0·115 6.12 C.62C 0·125 €.876 2.668 2.050 41209·6417 0·130 6·15 0.618 0.065 €.945 2.641 1.991 41174·7444 0·162 6.20 C.663 C.C9I 0.674 2.654 2.102 41160·6153 €·179 6.27 0.664 0.077 0.681 2.663 2.127 40β09·7241 0·194 6.23 0.665 0.107 0·839 2.624 2.170 40623·7798 0·195 6.25 0·709 0.045 €.791 2.627 2.236 40465·7493 0·222 6.27 0.708 0.114 0.734 2.637 2.237 41175·7333 0.303 6.31 0.736 C.069 €.792 2.649 2.249 41161·7576 0.313 6.34 0.701 0.130 €•797 2.625 2.268 41163·7333 0·442 6.56 C.804 0.132 €.685 2·610 2·292 41176·6014 0.455 6.56 0.763 0.118 0.694 2·632 2.139 41120.9305 C.5C0 6.62 0.763 0· 155 €.633 2.644 2.271 40762.9221 0.531 6·67 0.797 0.166 0.622 2.610 2.372 40647.6646 0.598 6.66 C.825 0.160 0.609 2.612 2.330 40763.6479 0.€€2 6.66 0.633 0.142 0.693 2.651 2.374 41136.6847 0.772 6.93 0.812 0.165 0.555 2.644 2.207 41122.6972 C.760 6.60 0.770 0.193 €.620 2.663 2.179 41593.6533 0.802 2. 194 41537.7813 0·646 6.62 0 «736 0.066 0.731 2.642 2.037 41165.7701 0.664 6.47 0.675 0.147 0.652 2.665 41137.7616 0.697 6.45 0.669 0·07 4 0.766 2.649 1.903 40821.7666 0.906 6.47 C.706 C.110 €.626 2.647 2.088 41137.9206 0.919 6.41 0.641 0.125 0.698 2.663 1.989 40126.6722 0.947 6.24 C.656 0.096 0.888 2.653 1.859 40765.6687 0.950 6.15 C «6 06 0·110 €.883 2.686 40098.7026 0.965 6.11 0.584 0.079 0.937 2.676 1.827 40435.6457 0.965 6.13 0.589 0.11C 0.910 2.680 1.872 40098.7104 0.966 6.13 0.576 €.090 0.945 2.670 1.831 40414.8755 0·979 6.05 0.596 0.094 €.966 2.662 41208·6715 0.992 6.03 0.579 0.043 1.013 2.648 1.849

S2 ACL 17.1

41235.6035 0.0 8.38 €.677 €.010 €.981 2.663 2.106 41510.7234 0.053 7.65 0.757 — 0.033 1.187 2.709 1.906 41510.7796 0.057 7.90 0.735 0.024 1.177 2.7C4 1.922 41202.6917 0.06C 7.96 €.797 0.006 1.005 2.699 412C2.7299 0·062 6.01 0.791 0.023 1.013 2.668 1.966 41511·7429 0·113 8.04 €.793 0.050 0.992 2.658 2.100 41511.7659 C.115 8.03 0.832 €.004 1.034 2.704 2.087 41512.7415 0.171 8.14 €.681 0.039 0.938 2.704 2.432 41512.7944 0.174 8.14 €.696 0.025 0.895 2.691 2.570 41204.6722 0.195 8.26 0.886 0.076 0.798 2.640 41513.7297 0.229 8.22 €.936 0.112 €.766 2.641 2.810 41513.7576 0·230 8·23 0.939 0.140 0.753 2.646 2.787 41173·7229 0·369 8.54 1 .€62 0.199 €.620 2·6 0 6 3.606

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 622 FELTZ AND McNAMARA

APPENDIX (CCKTINtiED) cu JD PHASE Y Ε-Y Ml CI BETA KHG2 24CC0C0.+

SZ AOL 17.1 (CCKTINUED)

41533.7451 C.397 8.65 1.091 0.218 0.469 2.603 2.994 41156.6264 0.403 8.65 1.013 0.233 1.043 2.645 41174.7069 0.447 8.66 1.096 0.345 0.447 2.650 3.072 41175.7042 0.505 8.81 1.153 0.292 0.456 2.626 2.831 41160.7139 0.630 9.02 1.199 0.356 0.274 2.594 2.877 41537.7505 C.63C 9.09 1.219 G.231 0.564 2.613 41161.7132 0.689 9.13 1.191 0.470 0.378 2.621 3.353 41538.6047 0.692 2.763 41180.7701 o.eoi 9.02 1.108 0.276 0.753 41164.7007 .0.863 8.97 1.082 0.246 0.482 2.641 2.523 41593.6401 0.892 8.84 1.069 0.151 0.543 2.575 2.500 41199.6979 C,9CS 8.85 1.023 0.123 0.459 2.579 41148.8597 0.939 8.91 1.012 0.201 0.448 2.638 2.189 41234.6097 0.942 8.88 1.027 0.166 0.399 2.671 41234.6306 0.943 8.89 1.011 0.174 0.562 2.658 41183.7062 0.972 8.76 1.002 0.133 0.717 2.669 2.720 41526.7651 0.989 8.58 0.920 0.062 0.860 2.672 2.126 41526.7764 0.990 8.57 C.918 0.072 0.809 2.657 2.346 41235.5910 0.999 8.40 0.892 — 0.007 0.968 2.681 2.000

TT ACL 13.8

41513.7957 0.001 6.48 C.69 1 -0.013 1.148 2.711 1.901 41183.7160 0.003 6.55 0.648 0.075 1.267 2.679 1.804 40138.5986 0.020 6.54 0.670 0.031 1.107 2.662 1.893 40413.8853 0.034 6.58 0.695 0.062 1.046 2.677 1.968 41142.8701 0.034 1 .918 41500.7527 C.053 6.75 0.707 0.107 0.975 2.686 2.080 40441.7617 0.061 6.61 C.732 0.092 0.912 2.675 2.031 40125.6319 0.077 6.62 0.736 0.100 0.908 2.672 2.107 40414.8562 0.105 6.67 0.761 0.134 0.908 2.656 41199.7083 0.166 6.79 0.796 0.153 0.785 2.633 2.421 41144.8236 0.176 6.78 0.812 0.187 0.705 2.619 2.470 41117.8993 0.218 6.79 0.847 0.165 0.682 2.659 2.519 41159.7611 0.262 6.97 0.891 0.202 0.654 2.603 41118.9354 0.294 7.01 0.905 0.230 0.640 2.629 2.780 41160.7681 0.335 7.04 0.946 0.262 0.521 2.581 2.865 41147.7430 0.388 7.21 0.930 0.322 0.563 2.596 2.722 41120.8868 0.435 7.24 0.971 0.354 0.442 2.600 3.118 41148.8715 0.470 7.33 1.022 0.270 0.506 2.584 3.193 40847.6985 0.574 7.48 1.083 0.361 0.362 2.615 2.896 41122.8729 0.580 7.54 1.057 0.361 0.433 2.597 2.953 41137.7521 0.662 7.67 1.054 0.340 0.400 2.630 2.559 41537.7908 0.746 7.60 1.020 0.248 0.564 2.626 2.639 40038.8368 0.767 7.55 0.979 0.280 0.435 2.593 41538.8137 0.820 2.420 40637.6785 0.845 7.34 0.890 0.159 0.602 2.639 2.353 41912.8062 0.929 7.22 0.864 0.132 0.728 2.392 41127.8597 0.942 7.11 0.820 0.092 0.854 2.650 40467.7007 0.947 7.07 0.825 0.092 0.759 2.651 41196.7167 C.949 7.02 0.824 0.057 0.804 2.695 2.216 41156.8493 0.953 6.67 0.738 0.072 0.990 2.651 2.031 41210.6479 0.961 6.90 0.765 0.079 0.931 2.648 2.063

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 623

APPEND I> ( CGMINUEO)

JC PHASE Y 8— Y Cl BETA KHG2 24CC0C0 ·4

TT ACL 13.€ (CCfsTINLEO)

41554.6785 C·9 7 3 6.62 C.732 C.029 1.CC7 1 .92 I 41554·7520 0·979 6.75 C· 7 04 0.046 1.C38 1 .897 41513.7007 C.99 4 6.48 C.67€ C.004 1.155 2.688 l .859

FF A CL 4.5

4 C 7 € 2 .8672 0.0 15 5.21 0.464 0. 11 € 1.003 2.678 1.854 40 1 14 .€611 C.C34 5.16 €.449 0. 159 €.995 2.679 1.885 40105 .7646 0.044 5.20 0.470 0. 141 €.985 2.666 1.850 40105 .7694 0.045 5.20 C.473 0. 123 1.012 2.674 1.850 40798 .7756 0.047 5.20 0 .460 0. 142 1.00 4 2.683 1 .875 4C8C7 .7283 0. 049 5.12 0.52 1 0.052 1.016 2.673 1 .901 40038 .8215 €.07 1 5.25 0.470 0. 152 C.963 2.672 1.872 40767 .8054 0. 120 5.28 0.48 1 0. I € 0 0.949 2.684 1.955 41 174 • 6764 0· 123 5.24 0.487 0. 139 €.964 2.678 1.966 40414 .8506 0.176 5.29 C .506 0.167 0.904 2.670 40821 .7588 0· 187 5.35 C.518 0. 168 €.912 2.672 1.990 41 16 1 .6889 0.218 5.34 0.502 0. 177 0.883 2.660 2.062 40763 .8381 0.232 5.41 0.516 0. 152 €.873 2.671 2.131 40808 .7742 0.283 5.44 0.525 0. 173 €.850 2.666 2.086 40419 .8291 0.289 5.44 0.520 Ο. 172 €.864 2.661 2. 118 4 €428 .7922 0.294 5.49 0.535 0. 166 0.827 2.658 2.099 40768 .8284 0· 348 5.42 0 .538 0. 183 0.852 2.646 2.126 40411 .8408 €.5 €3 5.45 0.537 0.207 €.803 2.642 2.178 39754 .6181 0.504 0.553 0.183 C.8C0 2.637 41511 .7542 0.515 5.45 €.540 0. 174 0.812 2.633 2. 138 39772 .5930 0.524 €.560 0. 180 €.8 04 2.642 40805 .7339 €.603 5.50 0.536 0.205 €.823 2.654 2.112 40126 .€59 7 C· 717 5.41 0.51 € 0. 190 0.828 2.662 2.023 41199 .7285 0 · 7 26 5.37 €.522 0. 133 0.847 2.642 1 · 980 39 755 .6208 0.729 €.512 0.189 0.858 2·659 40162 .6479 0.767 5.40 €.519 0.182 0.879 2.650 1 ·94 3 40408 7576 0· 8 13 5.32 €.479 0.18 1 0.900 2.679 1 ·904 40131 .€201 0·827 5.29 0.487 0.160 0.906 2.663 1 ·87 3 41593 .€804 0· 84 0 1 ·858 39760 €125 0· 845 0.495 0.145 0.946 2· 645 40158 .6062 0.863 5.29 0.472 0.167 0.932 2 ·6 83 1.840 41 173 • 6882 0.902 5.18 €.461 0· 129 1 · 005 2.690 1 · 863 41209 .6521 0.946 5·17 €•433 0· 14 6 1.00 7 2.677 1 · 601 41164 • 7604 0·905 5· 1 9 0·454 0.133 0 · 996 2.671 1 ·843 41513 .7241 0· 956 5· 10 0· 470 0.096 1 · €46 2·683 1.847 40413 .8735 0·957 5 · 17 €•451 0· 141 1 · 029 2.681 1 ·8 15 40154 • 691 C 0·987 5· 21 0.456 0.169 1.005 2.662 1 ·β69 40467 • 6875 0· 994 5·21 €.448 0.154 1.002 2.681 1 · 838 41160 • 6951 €•996 5· 15 0.448 0· 144 1.001 2.684 1 ·837

FM AOL 6· 1

41143·7776 0·014 7·88 C·778 -0·019 1.041 2·654 1·981 41137·€889 0·018 7·93 0·780 -0·015 1·010 2·692 1·970 41510·71Ο9 0·027 7·84 C·820 0·005 €·966 2·667 1·962 41137·6555 C·045 7·9I 0.776 0.031 €·952 2.675 2·088 41174·6826 0«068 7·88 0·824 -0·011 0·961 2·656 2·059

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System r · 624 FELTZ AND McNAMARA cr> inp. APPENDIX (CCKTINUEOI < g JO PHASE Υ Β—Y Ml Cl EET A KHG2 2 24CCCC0·*

FM AOL €·1 (CCNTIKUED)

4 1180 « 7951 C· €68 7.87 0.798 0.006 €.940 2.697 41553« 7817 0 ·071 7.96 0.823 €.001 0.982 2.126 41125« 8944 €•089 7.91 0.845 »0.014 1 .062 2.632 41156« €785 0« 156 8.€8 €.863 0. 1 € € €.878 2.600 41144« 8708 0.193 8.09 € .86 € 0.115 €.706 2.625 2.340 41126« 7333 0.226 8.19 €.873 0.009 0.841 2.6 13 2.565 41132« 886€ €.233 8.14 €.903 €. €6 € 0.711 2.581 41175« 7139 0.237 8.12 0.927 €.€32 0.787 2.640 2.286 4 1 120 4 9215 €.276 8.20 €.899 €.069 0.729 2.622 2.421 41133« 8618 0.392 8.32 0.947 0.098 0.666 41176« 7924 0.413 8.36 0.954 €.€76 0.699 2.606 2.730 41164« 6785 €.432 8.38 €.959 0. 105 €.616 2.640 41537, €145 0.460 8.38 €.967 0.081 0.603 2.63 1 2.724 41513« 7471 €.523 8.42 €.957 0.167 0.5 76 2.640 2.691 41593 < €699 €.595 8.51 € . 99 € 0. 19 1 0.501 2.605 41122. 9319 € . 6 €4 8.57 1 .€€7 0. 138 0.583 2.653 2.777 41141« €292 0.695 8.58 1.018 0. 139 €.506 2.574 41135« €847 0.723 8.11 €.953 0. 144 €.555 2.6 14 41117« 8035 €.766 8.49 € ·98 € 0.063 €.587 2.622 2.628 41148« 8861 0.849 8.30 €.887 0.019 0.708 2.659 2.058 41142« 8819 0.867 8.25 €.866 €.047 0.761 2.600 2.130 41136« 8687 €.884 8.36 €.866 €.€80 0.788 2.623 2.1 10 41173« 7347 €.913 8.02 € . 8 € 1 €.023 €.816 2.665 1.904 41161 « 695 1 0.944 7.94 €.783 0.004 €.995 2.669 1.938 4 1 2 1 C « 6104 0.944 7.95 €.798 -0.007 €.949 2.688 1.9€2 41118« 904 8 0.946 7.90 €.799 -€.044 0.972 2.670 1.937 41210« ¢548 €.952 7.92 €.792 0.0 10 0.960 2.672 1.937 41210« 7046 €.960 7 ·90 €.782 €.01 7 0.997 2.665 1.987 41204« 6854 €.975 7.91 €.76 1 0.001 1.118 2.648

FN ACL 9.5

41593.€582 €.€19 8.05 €.793 0.149 €.718 2.629 2.151 41156.8569 €.€51 8.11 €.752 €.122 0.856 2.648 41176.7437 €.051 8.15 €.848 €.052 0.890 2.666 2.212 41195.7069 0.051 8.€9 €.803 0.126 €.701 2.618 2.235 41 148.8486 0. 1 € 9 8.23 €.819 0.162 €.720 2.605 2.414 41537.8040 0.128 8.25 0.85 A €.128 0.6 77 2.669 4€769·8901 €.144 8.10 €.837 €.163 0.714 2.626 2.279 411^0.8951 €.161 8.25 €.843 €.172 €.665 2.633 2.445 41 159.7354 €.257 8.44 €.889 0.160 €.715 2.602 41121.8861 €.266 8.47 €.872 0.203 €.539 2.62C 2.244 4151C.7444 0.275 8.45 €.889 0.257 €.545 2.6 €9 2.760 41 160.7792 0.367 8.55 €.936 €.238 0.563 2.578 2.455 41 122.8833 €.371 8.60 0.937 €.192 €.651 2.591 2.874 41161.7035 0.465 8.65 €.917 0.275 €.429 2.636 2.622 41 199.7173 0.474 8.63 €.941 0.204 €.509 2.557 2 . 3 9 € 41513.8035 0.597 8.43 €.86 € 0.136 0.628 2.598 2.258 4 1 144.8333 €.686 8.36 0.811 €.173 €.581 2.619 2.183 41552.6963 €.699 8.37 0.84C 0.083 € .760 2.165 41552.7644 €.7€6 8.37 0.835 0.141 €.639 2.057 40765.8555 0.719 8.24 €.813 0.141 €.685 2.651 2.112 41 164.6903 €.78€ 8.32 €.791 0.128 €.718 2.624 2.039

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 625

APPEKOl* i CON TINUEOI

JC PHASE Y B-Y ¥1 Cl EETA KfiQ2 24CC0C0·*

FN AOL 9.5 (CCNTINUEO)

41 Ι83·7236 0.787 8· 28 0 ·80 1 0· 11 7 0· 777 2.670 2· 190 4 1553·6929 0.804 8· 24 C ·774 0· 1 14 0 · 781 2·028 41553·7922 0· 8 1 5 8·26 0 · 76 9 0 · 12 0 0· 774 2*067 41174 «7166 0· 837 8· 16 0 ·735 0· 153 0.786 2.649 2 · 0 € 9 41136·85 07 0 · 8 4 4 8 ·37 0.734 €•170 0.828 2 ·642 1 ·997 41117·9125 0· 847 7.96 C.68C 0 ·04 2 €.787 2· 671 2 · 105 41165^7319 0· 890 8.C9 0.771 — 0·018 0.583 2 ·605 4112 7« €736 0 · 897 8· 09 0 · 703 0· 159 0.787 2.691 41184·8347 0· 904 8 ·0β €•722 0· 063 0· 876 4155 4·74 2 2 0· 9 1 5 8 · 13 €.743 0· 078 €•892 2 · 09 1 41137·7326 0·937 θ · 15 €.754 0· 064 0.703 2.649 1 · 993 4 1175·7 2 36 0 · 943 8· 08 €.782 0 · Ο 7 9 0.792 2.668 2 · 1 14 41118·8937 €•95 0 8 · 06 0.752 0· 129 0.7 74 2.637 2 · 126 41526·8145 0· 97 C 8 · 1 1 €.773 0 · 086 €.781 2.678 2 ·079 4114 7·7618 0 ·994 8 · 11 0.747 0· 09 8 0.834 2.654

V496 ACL 6·8

4 12 1C · 63 8 9 €•€11 7.54 0.727 0.110 0. 766 2.666 2 · 17 4 4 1210·6799 0 · € 1 7 7·53 0.724 € . 133 €.733 2.682 2· 157 4117 6·77 85 0· 037 7.58 0.713 €.151 0.797 2 ·64 9 2· 162 41142·8243 0.049 7.55 €.692 0· 18 1 €.711 2.598 2. 173 4 1183·6965 0.053 7.53 €.734 0· 107 0.848 2.683 2 · I 76 41537.7651 0·€69 7.62 €.713 0 · 168 0.894 2.630 2 · 176 4 15 10·7332 €•€98 7 ·58 0.750 0· 100 €.736 2.637 2 · 10 2 4 I 15 €·7972 €•102 7· 56 0 .72 € 0· 172 €.728 2.64 1 4 1122·8 C55 0· 108 7.55 €.717 0· 148 €.791 2.639 2 · 3 0 2 41136·7694 0.159 2 ·306 4 1177·7569 €.18 1 7.59 €.754 0. 153 €.766 2.627 2 · 3 14 40435^8318 0. 185 7.67 0.753 0. 174 €.715 2.629 2.108 4C4 €8·7847 0.211 7.66 €•761 0.181 0.875 2.627 2.278 41164·7276 0.267 7.69 €.787 0.15 1 0.657 2.631 2.397 4159 3·6318 €•277 7.68 C.79C 0. 146 €.686 2.4 18 4 1137·7424 0·3€2 7.75 0.767 0. 15 1 0.709 2.630 2.402 41137·91 11 €•327 7.75 €.775 0. 189 €.700 2.627 2.439 41144·8146 0.341 7.64 0.775 0.255 0.558 2.6 17 2.475 41117·8132 0.374 7 · 64 €.816 0.109 0.622 2.626 2.406 41131·8799 0.441 7 · 84 €.844 €.14 1 0.736 2.584 2.459 415¿ 3·7595 €.481 7·ει €.811 0. 19 1 €.598 2.610 2.575 4111€^8847 0.532 7.77 0.848 0. 191 € .593 2.600 2.549 41159·7562 0.536 7.84 0.8 12 0.222 0.710 2.592 2.794 41126·8680 €.705 7.93 €•780 0.205 C.610 4 113 3·84 17 €.729 7.92 €.817 0.173 0.602 2.643 41120.8771 0.824 7.75 € .820 0. 134 0.623 2.617 2.278 40419·8533 0.837 7.79 €.77e 0.222 €.686 2« 60 9 41 127.8500 0.849 7.78 0.754 €.1 73 €.629 2.615 41175.€965 0.878 7.69 € .757 0.176 €.664 2 · 6 3 4 2. 170 4114 1.8153 0.9C1 7.67 €.76 I 0.144 0.693 2«6 13 41 1Ç6.7069 0.965 7.60 €.713 0.150 0.738 2.656 2.195 41121 «8715 0.97 1 7.62 €.698 0.12 1 €.734 2.597 2. 193

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 626 FELTZ AND McNAMARA

APPENCIX (CON TINLED) cu JC PHASE e-Y Cl BETA 24CC000.4

RT AtfR 3.7

40933< 7776 0.076 5.15 C.3C6 0.20 I 0.969 2.667 1 .737 41CC4, €236 c.oec 5.2 1 0.320 0. 182 0.960 2.6 72 1 .750 40978. 7305 0.135 5.27 €.359 0.188 0.866 2.653 1.885 41CC4. 8271 0. 135 5.30 0.347 €. 177 0.902 2.663 1.837 40978. 8721 €.173 5.35 C.371 0.210 €.826 2.643 1 .957 40 154- 9847 0. 189 5.27 0.351 0.251 €.758 2.647 1.945 40962. 73C5 0.208 5.36 C .389 0. 197 €. 784 2.648 2.012 40 156. 8667 C.23C 5.38 0.372 0.226 0.753 2.645 2.028 4C982. 9041 0.254 5.57 0.382 0.243 0.744 2.624 2.06 1 40986. 6729 C .265 5.43 €.410 0. 195 €.733 2.615 2.093 401€2 « 6667 0.303 5.44 0.406 0.244 0.668 2.631 2.085 40990. 6450 0.231 5.58 0.449 0.222 €.670 2.629 2. 168 40934. 7673 0.343 5.63 €.428 0.270 0.665 2.635 2.098 40949. 74 10 0.359 5.55 0.446 0. 24 € 0.659 2.625 2. 175 40949. 8179 €.36 C 5.57 0.456 0.254 €.624 2.634 2. 168 40990. 6347 0.382 5.63 €.459 0.227 0.675 2.602 2. 186 40979. 7324 0.404 5.63 0.462 0.243 0.643 2.6 15 2.191 40979. 8777 0.443 5.70 0.457 0.275 0.616 2.612 2.237 40991. 6013 0.587 5.80 €.48 0 0.284 €.562 2.624 2.206 41017. 7930 0.612 5.75 C.5C3 0.230 €.597 2.626 2.220 409914 7625 €.630 5.82 0.490 €.279 0.609 2.626 2.218 41003. 6993 0.832 5.43 0.361 0.179 €.818 2.661 1.747 40966. 8005 0.836 5.41 0.352 0. 181 0.868 2.68 1 1.707 40131. 8722 0.969 5.0 7 €.286 0. 16 € 1.075 2.70 1 1.573

R X AUP 11.6

40962 .7881 0.044 7.27 €.544 0.095 €.896 2.657 1.983 4 1C 17 .7583 0.052 7.32 €.567 0.122 0.895 2.644 2.014 4 1029 .6125 €.€72 7.44 0.574 0.120 €.875 2.637 2.042 40983 .6887 0.121 7.43 0.584 0. 154 €.821 2.624 2. 138 41204 .8653 0.149 7.37 0.580 0.143 0.767 2.622 2.142 4C158 .8542 0. 163 7.51 €.608 0. 186 0.758 2.613 2.203 40949 .7319 €. 2 € 0 7.48 0.626 0. 198 0.725 2.626 2.317 41031 • 6187 0.245 7.57 0.583 0.180 0.749 2.622 2.250 40986 .6213 0.374 7.73 €.723 0.207 0.622 2.597 2.530 40 162 .8555 0.5C7 7.84 €.710 0.284 0.547 2.603 2.511 41593 .9138 0.616 8.03 0.705 0.231 0.600 2.603 2.346 40978 .7859 C.7CC 7.80 0.644 0.212 €.665 2.623 2.206 40990 .7319 0.727 7.79 0.625 0.206 0.693 2.593 2.118 40979 .7083 0.779 7·6β €.608 0.164 0.702 2.628 2.186 40991 .6206 0.804 7.69 0.597 0.180 0.764 2.653 2.095 40154 .9118 €.823 7.57 0.571 0. 188 €.752 2.618 2.098 40933 .7678 0.827 7.61 0.614 0.210 C .87 0 2.650 2.029 41003 .6382 0.838 7.62 0.593 0.100 0.858 2.643 2.057 41 €38 .65 07 0.850 7.56 0.588 0. 139 0.856 2.634 2.080 40934 7583 €.912 7.42 0.546 0.155 0.973 2.641 1.891 41004 6340 0.923 7.38 0.527 0.083 0.983 2.658 1.874

SU CAS 2.0

40988·8359 0.001 5.79 0.419 0.097 1.088 2.718 1.492 40990.7944 O.OOS 5.78 0.430 0.070 1.114 2.687 1. 523

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 627

APPENDIX { CCN TI NtlEC )

JC PHASE ê— y vi 6E τ A KHC2 24CCCC0.4

SU CAS (CCKTINtEO)

4 C 1 C 5 « 9722 0 · C 8 7 5 · 75 0.423 0. 109 1 ·€58 2· 7 1 Ο 1 ·50 1 40 10 5« 9785 0 · 0 9 0 5 · 74 0.423 0. 106 1 ·064 2.703 1 ·508 4 016 6· 7208 0· 121 5· 74 0.426 0.09 7 1 · 09 1 2 · 7 05 1 · 5 3 Ο 4 C € 4 8 · 7783 0· 150 5· 76 €•432 0 · 08 1 1.134 2*697 1 ·563 4 C 154· 8632 ο·ΐ6ε 5 #75 0.420 0· 120 I .065 2*702 1 ·59 1 4 06 0 7· 8923 0 · 1 7 5 5 · 7 7 0.443 0· 095 1 ·094 2*689 1 ·6 1 1 4 0 15 6· 8021 0· 189 5 · 78 0.422 0.114 1 · 075 2 · 7 0 7 1 ·594 40€ CÇ · 9 138 0 · 2 1 3 5· 86 €•476 0 · 08 9 1 · 08 5 2.680 1 ·6 04 40934· 7019 0 · 2 2 9 5.80 0·461 0· 137 1 · 0 6 0 2 ·682 1 ·6 14 40 162* 8 125 ε·246 5·εο €•439 0· 130 1 .€€5 2.681 1 ·6 2 1 40979· 5950 0 · 260 5.89 ο·4εε 0· 05 5 1 .€61 2.671 1 ·6 4 3 40125· 9 153 ο·3ΐε 5.91 €•483 0· 1 I 6 €.971 2 ·674 1· 704 40131· 7840 0· 32 € 5.93 €•484 0.114 0.958 2.665 1 ·72 Ο 40979· 7588 €•344 5 · 95 0 · 4 79 0· 083 0.990 2.672 1 ·705 40983· 6589 €•345 5 · 95 €•480 0 · 08 1 €•982 2.668 1·7 15 4082 1 · 9026 0 · 3 6 3 5 .96 0 · 5 04 €•090 0 · 956 2.665 1· 75 1 41593· 8923 0·39ε 6 · 0 4 €•50 1 0 · 0 9 9 €•926 2.653 1.747 40837· 86 16 0 · 55 C 6.11 0 ·54 2 0 · 086 0 ·890 2.648 1 · 86 1 40 1 14· 8236 €•628 6.14 €•538 0· 1 1 1 €•835 2.640 1 «855 40847· 9146 C · 707 6 · 11 0.536 0 · 09 2 €•872 2 · 65 0 1 ·786 40933· 7207 0· 726 6.16 €•562 0· 163 0 · 857 2 · 6 6 9 1 · 82 7 40978· 5923 0 · 745 6.15 €.555 0 · 06 0 €•875 2 ·652 1 ·8€5 40428· 89 16 0 · 746 6·20 0.529 0· 119 0 · 8 59 2 ·690 1 · 807 40978· 7090 0· 8 05 6· 10 €.506 0· 102 €•908 2*66 1 1 · 7 Ο 4 40126· 9076 0 · 827 6 · 0 0 €•482 0· 124 0 · 8 8 0 2 ·669 1*679 40434· 9326 0 · 8 4 5 6 · 0 0 0.5CC 0· 09 8 €.964 2 ·6 79 1*617 40978· 7991 0 · 852 5· 99 €.482 0·076 €.982 2 ·66 3 1 «638 40949· 6152 ο·εε€ 5 · 9 9 €.496 €•079 0.969 2 · 6 7 4 1 ·60 Ο 40 138· 73 05 €•892 5.96 €.465 0 · 07 3 0.977 2.681 1 ·57 1 40990· 6033 €•907 5.92 €.459 0· 075 1 · Ο 14 2.689 1 · 58 4 40968· 6567 0· 909 5 ·9 I €.462 0· 08 1 1·011 2·6ε7 1 « 60 7 40949· 6902 0· 9 1 9 5· 91 €.477 0 · 075 1 · 0 1 8 2.693 1 · 595 40988· 74 15 0· 952 5 · 90 0.463 0 · 088 1 ·063 2·705 1.542 40990· 7068 0 · 96 C 5.86 0.435 €•074 1 · €61 2*689 1 ·537 40949· 7991 0 · 9 7 4 5.84 0.438 0 · 09 4 I · 069 2· 71 3 1 «528

TU CAS 2·1

4 09 49< 5972 €.€€6 7.50 Ο · 3 2 4 0. 163 €•915 2 ·69 1 1.531 40108, 8604 €•008 7.06 €•214 0· 142 1 ·234 2.735 1.302 4093 4 « 6484 €•018 7.06 Ο « 2 Ο 2 0· 147 1 · 249 2.76 1 1.236 40979, 5847 Ο · 02 4 7· 6 3 € .387 0· 120 0·931 2.684 1 · 664 41 199, 9410 €•€28 7.59 0· 3 37 Ο · 1 7 8 0*679 2.700 1 ·6 7 4 40949, 6790 €•044 7 · 1 6 €•253 € · 173 1 · 143 2.723 1.331 40990, 5908 0· 168 7*46 Ο ·3 1 3 0· 150 1·00θ 2.718 1.576 4099C. 6958 0.217 7*40 Ο · 3 Ο 4 0.136 Ο · 99 5 2*704 1.622 40 162, 7972 0.221 7*62 €•363 Ο · 2 1 3 Ο · 80 1 2*656 1 · 84 0 4 €8 € 8 ι 8706 0.224 7 · 4 Ο ο·3ΐε Ο. 182 Ο · 994 2*698 1.634 40823« 88 1 1 €.24 1 7 · 9 I €•303 0. 177 €•971 2*692 1.6 13 4098 8 4 6382 0.255 7 ·69 0.400 0· 167 €•821 2.652 1 .887 4 Ο 4 € 8 χ 9 180 0.269 7*73 €.377 0· 22 8 Ο · 762 2.680 1.821 4 € 8 2 14 8894 C.31C 7 · 74 0.4 14 0· 186 0*757 2.662 1 .883 40158, 7896 €.347 7.65 €•347 Ο · 200 C *62 € 2.680 1 .748

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 628 FELTZ AND McNAMARA

APPEND 1 X CCOMIKtiEO) CU< JC PHASE 8-V Ml Cl EET A K + QZ 24 C C 000« 4

TU CAS 2·! (CCNTIKUEO)

40156 « 7 €42 0.373 7.83 €.424 0.206 C.704 2.637 1.973 40952. 5894 C.4C5 7.94 C.429 C.2C5 0.721 40Ç52. 5979 0.409 7.89 0.443 C. 178 0.71 C 2.643 1.954 40434 < 9116 0.419 7.77 0.433 0.222 C . 696 2.657 1.9 16 40126. 6708 0.427 7.78 C.39C 0.200 C.729 2.632 1.854 40647. 8623 0.451 7.84 0.448 0.199 C . 7 11 2.654 1 .987 40154« 8507 0.5C6 7.81 0.430 0.203 0.698 2.616 2 .035 4 0978 4 5818 0.555 7.98 0.492 0.188 0.663 2.633 1 .970 40978. 6976 0.609 8.CO 0.456 0.230 C . 63 0 2.635 1.962 40105. 9542 C.65C 7.93 C .436 0.200 0.68 1 2.630 1.908 40105 « 9611 0.653 7.92 0.444 0.207 0.683 2.644 1.888 40411. 9353 0.679 7.97 €.468 0.219 0.652 2.592 2.016 40809. 8999 0.705 8.01 0.50 1 0.195 0.683 2.660 1 .979 40121. 7729 C.719 7.96 C.^53 C . 209 0.649 2.641 1.904 40837. 84 84 0.770 7.96 0.431 0. 197 C.723 2.620 I .896 40114. 8347 0.801 8.03 C .468 0. 185 C .674 2.638 1.955 4C8C5 4 9124 0.641 7.88 C.4 13 0.192 0.742 2.640 1.781 40983. 6228 0.911 7.58 0.329 0.161 0.934 2.673 1 .582 401254 8208 0.936 7.43 C .290 0. 172 C. 990 2.705 1.518

CELTA CEP 5.4

408C8.8569 0.049 3.59 0.315 0.195 1.034 2.686 1.748 40105.9375 €.062 3.60 €.311 0.203 €.982 2.680 1.772 40105.9437 0.064 3.59 0.312 0.198 0.977 2.679 1.794 40411.9263 0.082 3.58 0.327 0.205 1.010 2.664 1.820 41173.9688 0.086 3.61 €.341 0.187 0.981 2.676 1.807 41538.9805 C.1C5 3.64 0.339 0.215 0.913 2.632 1.914 41533.6575 0.113 3.56 €.370 0.191 0.915 2.657 1.957 40465.9971 0.158 3.74 0.383 0.227 0.831 2.641 1.932 40138.6889 0.165 3.78 €.410 0.205 0.841 2.638 2.035 40154.8278 C.173 3.79 0.406 0.228 0.827 2.653 2.016 40809.8645 0.237 3.89 0.444 0.224 fc.775 2.649 2.117 41174.9708 0.273 3.91 0.446 0.228 €.743 2.632 2.229 40933.6804 0.310 3.90 0.477 0.257 €.701 2.621 2.211 41593.8430 0.329 4.02 €.477 0.234 0.694 2.218 40837.8438 0.451 4.12 €.520 0.256 0.643 2.604 2.319 40821.8804 0.476 4.12 0.507 0.287 0.611 2.609 2.350 40805.8977 0.498 4.21 0.521 0.316 C.6C5 2.612 2.395 40408.8958 0.518 4.18 0.522 0.307 0.575 2.620 2.388 40156.6868 0.519 4.11 0.523 0.270 €.615 2.625 2.390 40038.9048 0.571 4.23 €.545 0.276 0.586 2.609 2.353 401€8.7979 0.595 4.26 0.554 €.281 0.584 2.617 40768.9033 0.604 4.25 0.549 0.285 0.600 2.597 2.400 39754.7250 €.615 0.556 0.290 0.585 2.590 40162.7778 0.654 4.28 €.539 0.301 0.572 2.608 2.362 40763.9104 0.673 4.39 0.566 0.259 €.598 2.627 2.374 40806.8660 0.678 4.36 €.543 0.304 €.558 2.607 2.359 40114.7833 0.711 4.33 €.557 0.294 0.565 2.617 2.348 39760.7056 0.73€ €.550 0.302 0.564 2.596 40098.9715 0.764 4.35 0.531 0.274 0.582 2.620 2.297 40098.9757 €.765 4.34 0.532 0.278 €.570 2.627 2.245 40125.8111 0.766 4.29 0.530 0.275 0.570 2.610 2.334

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 629

APPENDIX (CCKTIMieO) cu JC PHASE Y e-Y VI Cl EET A KHG2 24CCOC0.4

DELTA CEP 5·4 (CGNTINUED)

4CAC4«8845 0·770 4·30 C-526 0·286 0·556 2.623 2·339 40€44·936€ C.772 4.31 C.529 0·275 C.572 2.6X8 2.260 39755.745C 0.8C5 C.49€ C.288 C.614 2.624 4 08 ¿ 3.8 694 C.847 4.05 C.442 0.215 C.700 2.630 2.004 40807.67 06 0.865 4.02 0.41 1 0.220 0.744 2.650 1.914 40131.7639 0.875 3.93 0.401 0.203 C.800 2.649 1.669 41553.8972 0.865 1.770 41553.9756 C.9C0 1.715 40158.7694 0.907 3.71 0.323 0.199 €.900 2.679 1.715 41537.9624 0.916 3.65 C.313 0.188 0.970 2.695 1.685 40099.9097 0.939 3.60 0.293 0.184 1.034 2.689 1.651 40099.9139 0.94G 3.60 C.295 0.180 1.034 2.697 1.654 40126.8521 0.960 3.48 0.264 0.182 1.071 2.721 1.622 41210.9194 0.972 3.45 0.291 0.166 1.097 2.685 1.623 39772.7583 0.976 C.281 0.185 1.107 2.691

X CYG 16.4

412C8.8646 C.CCl 5.85 0.584 0.112 €.917 2.665 2.075 40848.7485 0.025 5.90 0.577 0.173 0.889 2.671 2.207 41176.8979 0.050 5.91 0.590 0.183 0.850 2.652 2.165 412C9.7257 0.053 5.93 0.635 0.131 0.630 2.658 2.283 41160.8944 C.C73 6.00 0.645 0.192 0.751 2.675 2.290 40767.8457 C.C87 6.02 0.657 0.202 0.767 2.634 2.346 41144.90 76 C.098 6.02 0.638 0.251 0.718 2.632 2.392 40768.8792 0.151 6.08 0.720 0.248 0.649 2.608 2.563 40162.7333 0.16C 6.15 0.741 0.267 0.649 2.636 2.505 40457.7373 0.163 6.08 0.709 0.253 0.656 2.636 2.538 40408.8547 0.180 C.741 0.272 0.596 2.658 2.634 40769.Ç199 0.214 6.16 0.762 0.301 0.552 2.613 2«590 40114.7361 0.231 6.21 C.776 0.308 0.565 2.635 2.647 39754.6667 0.258 C.799 0.332 0.525 2.608 40098.8021 0.259 6.27 0.787 0.317 0.511 2.630 2.638 40098.8097 0.259 6.27 0.796 0.321 0.465 2.634 2*614 40934.61C4 0.264 6.28 0.805 0.420 0.555 2.625 2.645 40131.6826 0.2C5 6.27 0.808 0.319 0.469 2.613 2.646 40770.9006 0.274 6.30 0.815 0.313 0.519 2.633 39755.6875 0.320 €.830 0.385 €.447 2.622 40099.8257 C.321 2.617 2.659 40099.8306 0.322 6.37 0.831 0.386 0.420 2.617 2.612 39772.6111 0.353 0.859 0.389 0.389 2.597 40837.8269 0.358 6.46 0.863 0.361 0.445 2.620 2.713 40411.9048 0.366 6.41 €.850 0.399 €.461 2.626 2.715 40821.8186 0.381 6.51 0.686 0.381 0.449 2.615 2.726 40805.8604 0.407 6.60 0.878 0.483 0.446 2.622 2.744 40806.8521 0.466 6.69 €.915 0.418 0.394 2.614 2.762 40823.8438 0.505 6.73 0.911 0.483 0.361 2.592 2«68S 40808.8416 0.589 6.85 0.944 0.473 €.368 2.633 2.612 40038.8701 0.601 6.88 0.949 0.465 0.362 2.616 2.690 39760.6500 0.623 C.95 € 0.455 0.362 2.590 40809.7908 0.647 6.86 0.935 0.451 0.437 2.606 2.644 40465.7769 0.654 6.84 €.938 0.415 0.269 2.564 40154.7597 0.674 6.92 0.931 0.450 0.376 2.594 2.613

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 630 FELTZ AND McNAMARA

APPEKCIX CCCNTINtiEDI cu JC PHASE Ύ B-Y Cl CETA KHG2 24€C000«4-

X CY€ 1€·4 (CCNTINCED)

40105« 8604 0·690 6.85 C .93 1 0.353 0. 381 2.607 2.693 4C 1 €5« 8674 0·69€ 6· 86 €.913 0.383 0· 420 2· 60 5 2.620 40138« (486 C · 69 C 6 ·92 €•908 0.458 €.374 2·6 18 2.607 40434, 8352 €•765 6 ·6 2 €•812 0· 29 0 €.420 2.61 € 2.365 404€ 7 4 7485 0· #74 6· 64 €•808 0·31 2 0.39 4 2.622 2.452 4C7C2« 9097 €•786 6· 63 €•799 0·289 0.483 2.6 19 2.416 40156« 6361 €«768 6·60 €.803 0 · 29 1 €.477 2 ·620 2.332 40644^ 8743 €•768 6 ·59 €.799 0.260 €.485 2.625 2.382 40763^ 8916 0 · 8 4 6 6 · 7 7 0.794 0·253 €.516 2.627 2.389 40 1C84 7326 0· 665 6·59 € .77 € 0·262 0.5 42 2 ·636 2.335 41173. 9055 0· 66 7 6 ·6 1 0.749 €.256 0.595 2 ·63 3 40125. 7681 €· 9 C4 6 ·31 €.683 €.204 €.682 2· 646 2.241 40158 < 7062 0· 9 I 4 6.24 0 . 64 € 0. 185 €.764 2.654 2.117 41174. 6819 0· 927 6 · 0 1 € .579 0· 148 €.866 2.694 2.092 4 0 4 04. 86 3 C 0 · 936 6 . € 0 €.572 0.17 1 0.822 2 ·660 2.035 40126 i 7687 €•965 5.88 0.566 0.145 €.905 2.688 1 .970 407€5. 9 04 6 0.969 5.81 €.569 0. 145 €.901 2.674 2.036 40798. 8701 0.961 5.88 €.561 0.150 0.893 2.664 2.004 40454. 8193 €.965 5.84 0.551 €. 158 0.944 2.68 1 2.058

St CYG 3.9

40796 .8047 €.0 6 · 55 € . 3 1 β 0.130 €.970 2.679 1 .564 40156. » 5875 €.€€3 6· 5 7 €.300 0. 158 0.951 2.688 1 .566 4 1 148 • 8116 €•€13 6 · 55 €.316 € . 178 €.880 2.681 1.599 41148 • 9354 €.€45 6.65 €.325 €.169 € .867 2.676 1.654 40933 • 5 95 € €.050 6 ·79 € . 38 € 0· 197 €.935 2.69C 1.755 408€6 .6 186 €.064 6· 6 9 €.378 0.111 0.864 2.653 1.692 41210. .6722 €.€99 6.67 €.368 €.138 0.826 2.651 1 .689 4 1 183 • 7937 € . 1 1€ 6.72 €.379 0. 159 € . 8 €5 2.669 1 .756 40837 .7915 €.136 6.77 €.366 0. 164 €.753 2.638 1.762 41137 .7701 €•142 6.79 €.387 0. 16 1 0.736 2.667 1 .756 41137 .8866 €•172 6.79 €.385 0. 149 '€.737 2.632 1.8 1 1 40126 .7569 €.246 6.90 €.419 0. 169 €.644 2.619 1.847 41 199 .7549 0.260 6.86 0.435 0. 143 €.655 2.626 1.836 40934 .5803 0. 3 €6 6.95 €.4 19 0.233 0.596 2.636 1 .835 4C4 1 1 .8596 €.362 6.97 0.436 0.177 0.586 2.606 1 .838 41536 .8213 €.426 7.10 €.451 0. 157 €.576 2 · 6 2 6 1 .847 40154 .7361 0 .52 2 7.22 0.506 0.203 €.517 2.625 1.813 40156 .6792 0.547 7. 18 €•449 0.191 €.534 2.627 1.8 10 4 1177 .8528 0.565 2·626 1.8 16 40162 .6956 0.591 7.15 €.45 1 0. 195 € .491 2.650 1 .78 4 40 64 7 .7346 0.724 7.05 0.4 16 0. 171 €.607 2.629 1.717 4 0 7 7 0 .8464 0 . 73 € 7. €1 €.4 12 0.168 0.594 2.644 1 .696 4 € 1 €5 .7776 0.79 1 6.81 €.358 €.155 0. 727 2.673 1.572 40 1 € 5 .7840 €.793 6.82 €.352 €.150 €.761 2*677 1 .554 41209 .€597 €.836 6.54 € . 3 €4 €. 11 € €.97 I 2.698 1.493 4 1 2€ 9 . 7979 0.872 6.40 € .263 0.115 1.047 2.696 1.447 4 15 13 .7083 0.696 6.37 € .278 0.114 1.0 77 2.705 1 .492 41513 .8137 0.926 6.43 € .298 €.113 1.060 2.706 1 .50 7 4 1144 .7326 €.953 6.49 €.283 0. 128 1.017 2.694 1.515 40648 .706 1 €.976 6.5 1 €.293 €.140 1 .€ 1 1 2.680 1 .550 40 125 .7347 €·9ε€ 6.48 €.292 0. 1 54 €.985 2.693 1.568

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 631

APPEND IX (C C Ν Τ I Ν LED )

JO PHASE Y ε-ν VI Cl RETA KhG2 24CC0C0

SU CVG 3.9 (CCNTINUED)

4C82 1,8040 C.Ç61 6.54 C · 29 l C. 166 €.968 2.674 1.555 4 1 144.8535 0.964 6.5 1 C . 3 C€ G· 1 62 C.9I7 2.66P 1.575

V 2 CYG 4.9

4 12C4 .84 38 C.C 12 2.652 1.8 14 412C9 .7875 0.028 8.59 € .504 0.106 €.978 2.665 1 .879 4 I 2 C 9 .9174 0.055 8.57 € .502 0.103 0.886 2.631 1.917 4 1496 .9443 0. C59 8.67 0.511 €.156 0.939 2.689 1 .895 4 1 175 .9153 C.C65 8.63 0.527 0. 109 0.935 2.659 2.008 41511 .8574 0.125 8 .70 0.559 0. 122 €.845 2.631 2.082 41511 .9285 0. 139 8.73 C .545 0. 155 0.871 2.638 2.140 41 156 .9250 0. 162 8.77 0.563 0.172 0.841 2.636 2.104 4 C 767 .861 1 0· 182 8.75 0.574 0. 197 0.7 32 2.6 15 2.216 41 195 .9618 C. 186 8.77 C.605 0. 129 €.748 2.646 1.93 1 4116 1 .9354 0. 192 8.8 1 0.609 0. 1 1 4 €•829 2.614 2.117 41210 .8403 0.245 8.89 0 .584 0.216 0.749 2.630 2.248 41 176 .9722 0.263 9.09 € .673 0.193 0.732 2.647 2.287 41512 .8533 €.329 8.94 0.652 €. 170 0.722 2.651 2.4 18 4 1 196 .8917 0.377 9.02 0.652 0.215 0.646 2.615 2.24 7 41537 .9019 €.478 9.10 0.670 O. 162 €.692 2.643 2.366 41513 .8713 0.539 9.17 0.680 0.190 €.669 2.647 2. 195 415 13 .9248 0. 55 € 9· 16 €.696 0.217 0.620 2.650 2 ·4 1 4 41538 .9138 0.686 9 · 2 7 €.678 0.237 0.542 2.638 2.25 1 4 1528 .9561 €.695 9.28 €.671 0.248 €.561 2.653 2.347 4 1553 .9150 0.770 9. 14 0.671 0. 157 €.667 2.667 2. 186 41553 .9651 0.781 9.12 C .655 0.219 0.576 2.607 2.069 41 164 .9548 0.812 9.08 0.589 0.186 0.720 2.630 2.085 412C8 • 9104 0.848 8 · 8 7 0.589 0.109 0.691 2.655 2.109 4 1510 .9165 0.931 8 ·5 9 0.49 6 0.093 €.962 2·7 12 1 .77 I 41554 .7180 0.935 8.65 0.466 0. 109 1.011 2.706 1.804 41510 • 9526 0.939 8.56 0.5 1 1 0.089 1.017 41593 • 8125 0· 972 1.689 41199 • 8021 0 ·9 76 8·56 0.483 C.1C9 1.028 2.671 1.828 41160 • 9271 €· 984 8.57 0 · 46 1 0· 149 1 · €39 2.673 1 ·7 15 41 199 .8923 0· 994 8 ·56 0.477 0.117 1 · 027 2.711 1.684 41 204 • 7701 0·997 β·54 0 · 4 8 8 0· 104 0.993 2.671 1 ·850

DT CYG 2·5

41540 • 6423 0 · 028 5.59 0.323 0· 183 €•917 2.666 1 ·8 19 41210 • 8153 0· 06 2 5.67 0.339 0· 157 0 · 9 19 2·661 1 ·854 41540 • 7354 0· 065 5· 6 9 0 · 34 5 Ο · 18 2 0 ·895 2 ·66 Ο 1 · 823 40138 • 6771 0 · 094 5 · 74 0.338 0· 185 Ο · 8 76 2 ·656 1 ·8 19 40158 .7305 0· 117 5 · 7 1 0.317 0· 192 €•878 2 ·666 1 ·8 13 40108 • 7646 0· 126 5 ·7 1 Ο ·34 0 0· 1 94 0.86 1 2·657 1 · 849 40648 7561 0· 200 5· 78 0 «353 0· 205 0·823 2 ·653 1 ·892 40408 8867 0 · 2 Ο 6 5·75 0 · 3 5 5 0· 1 98 Ο · 826 2·660 1 ·918 41533 6514 0.231 5 ·7 0 0 · 37 8 0· 156 C ·802 2· 623 1 ·92θ 401 «€ €479 0· 284 5 ·79 0 ·342 0·206 0·794 2·645 1 ·923 41553 8457 0· 311 1 ·904 40131 7271 0 · 313 5·83 0 ·376 0·202 0*783 2·628 1·955 40126 7930 0·339 5 ·83 0 · 3 6 9 0· 20 2 C ·776 2·635 1 ·976

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 632 FELTZ AND McNAMARA

APPEKCI X (CCNTINUEO) cu JC PHASE Β —Y Ml Cl BETA 24CCOCO·*

DT CYG 2 «5 (CCNTINCEO)

41536 • 9763 0.361 1.96 1 4C821 • 8721 0 .444 5.89 0.383 0. 194 C . 773 2.647 1.950 401 14 .7562 0.523 5.68 0.379 0.212 0.761 2.649 1.966 401 54 • 784 C 0.538 5.94 0.4 13 0.21 7 0.734 2.643 1.923 41511 .9590 0.552 1.902 40924 .€255 0.557 5.84 0.351 0.242 C.8C7 2.635 1.865 40434 .8694 0.602 5.79 0.361 0.204 0.54 1 2.657 1.877 412C9 . 64 1 C 0.672 5.73 0.341 0. 165 0.836 2.649 1.816 4 1199 .8465 0.674 5.76 0.346 0.181 0.859 2.645 1 .787 40162 .7444 0.723 2.685 1.727 41552 .6763 0.843 5.5 7 0.314 0. 170 0.920 2.685 1.728 41512 .7346 0.862 5.59 0.230 0. 139 0.953 2.670 1.746 41 137 .8417 0.865 5.63 0.307 0. 165 0.982 2.664 1 .706 41 127 .9299 C.9CC 5.61 C .292 0. 177 0.959 2.680 1.700 41527 .6430 C .906 5.62 0.299 0. 173 0.946 2.667 1.703 41512 .6743 0.916 5.6 I C.327 0. 157 0.941 2.697 1.773 40 125 .7776 0.933 5.62 €•30 2 0.199 0.931 2.669 1.739 41537 .9692 0.956 5.64 C · 30 5 0.192 0.919 2.679 1 .744

V532 CYG 3.3

41536^ 6909 0.042 8.97 0.677 0.062 0.969 2.690 1 .692 41538. 9353 0.056 8.94 0.695 — 0.0 03 1.034 2.701 1 .779 4 1210« 7250 0.065 8.9 1 0.696 0.007 1.063 2.720 1.777 41512« €442 0. 109 8.86 C . 7 04 -0.012 1.066 2.725 1.763 41210« 6306 0. 117 8.88 0.710 —0.025 1.095 2.675 1.837 41512« 9131 0.130 8.65 0.677 0.055 1.009 2.700 1.643 41174. 9396 €.185 8.92 0.666 €.083 1.034 2.699 1 .849 41496« 9263 0.26 C 8.94 0.718 0.029 1.0 07 2.662 2.043 41204. 7465 0.264 8.97 0.669 0.074 0.993 2.686 41513« 6926 0.428 9.11 0.754 0.067 0.866 2.675 2.005 41175« 9042 0.476 9.15 C . 764 0.094 0.874 2.655 1.962 41510« 8706 0.506 9.16 0.817 -0.035 0.691 2.675 2.089 412 C 8 « 9C00 0.529 9.16 0.771 0.024 0.892 2.653 2. 152 41225« 6542 0.676 9.30 0.783 0.073 €.802 41537« 9146 0.745 9.20 0.762 0.071 €.820 2.644 2.17 1 4153 7« 9500 0.756 9.20 0.757 0.083 €.773 2.674 2.034 41199« 8687 0.776 9.18 0.774 0.029 0.840 2.608 2.219 41176« 9625 0.6 01 9.31 0.788 €.075 0.832 2.724 2.02 1 41209« 8493 0.818 9.12 0.761 -0.026 0.876 2.678 2.00 1 41511« 6977 0.821 9.17 0.746 €.029 0.931 2.635 1.930 41196. 6701 0.865 9.09 0.729 0.035 0.890 2.676 1.879 41173. 9347 0.879 9.07 C . 7 07 0.091 0.890 2.685 1.946 4116 0« 8923 0.996 8.68 0.646 0.084 0.961 2.629

ZETA GE* 10.2

41004.8347 0.017 3.71 0.409 0.316 0.713 2.631 2.169 40933.6066 0.020 3.64 0.445 0.310 0.685 2.623 2.212 40162.9014 0.075 3.65 €.423 0.318 0.634 2.632 2.232 40934.8040 0.116 3.75 0.442 0.361 0.639 2.556 2.288 41208.9965 0.130 3.71 0.476 0.290 €.595 2.621 2.298 40996.5796 0.204 3.82 0.516 0.323 0.545 2.606 2.434

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 633

AFP END IX (COTI NUE D )

JC PHASE > B-V Cl EfcTA KhC? 24CC0C0«+

2EΤ A Gev 10·2 (CGNTINUEC)

4C98e • €665 0·227 3 · 8 8 0 · 5 2 4 0 · 36 7 0 · 539 2 · 59 1 2.479 412ÎC • 00 69 €•229 3 ·9 1 0 · 5 1 4 0 · 35 4 0 ·53 0 2 ·623 2 .50 I 4 1047 .€472 0 · 2 3 5 3 · 9 2 0 · 552 0 · 3 6 2 0 ·5 37 2 · 6 1 7 2 · 49 3 4 1017 • 8CCC 0 · 29 4 3 · 97 0 «572 0 · 3 5 1 €•509 2 .6 0 9 2.527 40 154 • 9951 0· 296 3 · 9 1 € ·5 3 2 0 ·397 0 · 488 2·6 13 2.496 40988 • 6668 0 · 4 2 6 4 · 1 6 0 ·593 0.420 0 · 434 2.606 2 .539 40978 • 8777 €•460 4· 16 0 · 5 97 0· 399 0.459 2.599 2.521 40979 • 7500 0 · 546 4 · 1 3 0 ·54 9 0· 40 5 0 · 4 77 2·6 12 2.412 40949 • 7722 0 · 5 9 3 4 · 09 €•522 0 · 38 1 0 · 4 7 7 2 ·6 2 2 2.342 40990 • 7776 0· 632 4 · 0 1 0 ·520 0 ·32 2 0 · 5 0 9 2·6 14 2.3 07 40 158 • 9000 €•680 3 · 9 0 €•470 0 · 3 3 1 0 ·542 2 · 62 5 2.204 4099 1 • 71 ε c 0· 725 3 · € 9 €•459 0· 334 0 ·594 2.625 2.173 40982 • 8096 0 · 8 4 7 3 · 71 0 ·427 0 · 2 9 2 0 · 69 1 2.632 2.165 4 1 C 0 3 • 7062 0 · 9 € 6 3· 6 7 0 · 4 19 0·234 0 · 6 3 1 2 .64 0 2.131 40983 • 7534 0· 94 C 3 · 64 0·4 10 0·275 0· 71 8 2.632 2.145 41004 • 6 160 0 · 995 3 · 7 2 0· 42 5 0· 286 €•719 2.635 2.155

te 7·9

41038 6354 0 · 039 6 · 6 5 €•576 € · €76 0 · 97 1 2.654 1.915 4099 1· 5798 0· €93 6 · 8 0 0 · 5 8 2 0· 117 €•858 2.644 2.039 40983· 7090 0 · 0 9 8 6 · 7 3 0 · 5 6 7 0· 122 0 · 876 2.635 2.084 40991· 7971 0· 120 6 · 7 8 0 ·578 0· 138 0 · 860 2.632 2.031 4103 1· 6903 0 · 1 6 1 6· 65 €•520 0 · 04 1 1 · 002 2.65 1 1 .892 41047· 6396 0· 176 6· 79 0 ·590 0· 1 19 0.867 2·637 2.080 4 1593· 9714 0 · 2 € 9 6.79 0 · 58 5 0· 130 €•857 2.6 69 2.0 19 401 € 2· 8771 0 · 38 1 6 · 96 €•65 1 0· 2 3 5 0.624 2.615 2.191 40154· 9743 0 · 3 8 2 6 · 98 0 · 65 7 0 · 21 3 0· 62 7 2 .62 1 2.289 410 17· 7833 0 · 4 € 4 6 · 9 9 €•701 0 · 1 7 5 0 ·653 2 ·6 17 2.368 40978· 8616 0 · 4 86 7 · 1 1 0 · 7 1 6 0·22 3 0 · 65 7 2.605 2 .430 40979· 7241 €•595 7 · 26 €•733 0 · 28 1 €•526 2.614 2.439 4 1003· 7431 €•630 7 ·39 0 · 754 0· 26 8 0 ·5 39 2.603 2.459 40988· 7048 0· 730 7 · 3 1 0 · 6 9 9 0 · 22 8 0 ·625 2.613 2.356 4 1 C C 4 · 8076 0 · 7 6 4 7.27 0 ·65 1 0 · 1 72 0 · 680 2.618 2.217 40933· 7874 €•790 7 · 15 € · 6 6 2 0.255 0 · 6 7 3 2.653 2.123 4 09 ^9· 7500 €•807 7 · 0 2 0 · 62 0 0· 153 0 ·650 2.626 2.063 40158· 8792 0 · 8 76 6 · 8 0 0 ·535 0.141 0 · 886 2.682 1 .874 40934· 7776 0· 9 16 6 · 6 8 0 · 4 8 7 0· 150 1 · 085 2.694 1.702 40990· 6130 0 · 97 1 6 · 6 1 0 · 4 8 4 0 · 1 06 1· 122 2.67Θ 1 .748 40982· 8035 0 · 9 8 4 6 ·5 I 0 · 4 7 8 0 · 07 9 1 · €75 2.661 1.790 40990· 8257 0 · 9 9 8 6 ·63 0 · 4 9 1 0· 121 1 · 0 4 0 2.660 1.821

Χ LAC 5.4

4 118 0« 9514 0.002 8.04 €.557 €.078 €.926 2.669 4 1164. 9340 €.€61 8.19 0.553 0. 1 16 €.975 2.673 1.918 41175, 94 93 0.084 8.19 0.588 0.110 €.939 2.688 1.9 1 1 4 1 2 € 8 « 7687 0.111 8.16 €.572 0.103 0.950 2.678 1.963 4 1148, 9431 0.12^ 8.22 € ·566 0.092 0.970 2.661 1 .927 4 1 2 € 8 < 9396 €.143 8.17 €•616 0.036 0.933 2.674 2.093 4 1513. 9360 €.156 8.24 0.597 0. 109 €.924 2.673 1.957 4 117 7« 0007 €.277 8.42 €.671 €.099 0.855 2.650 2.089 4 1 2 € 94 8923 0.318 8.36 € .636 0.136 0.828 2.644 2.225

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 634 FELTZ AND McNAMARA

APPEND I > ( CCN Τ INViEO ) cu JD PHASE Υ Β— V NI Cl BETA KH€2 24CCCC0··»·

X LAC 5·4 (CCNTINLED)

4 116 0 • 9472 €•329 8.39 0.645 0. 112 0.898 2.637 2.161 41 144 • 9382 0.389 8.43 0 .661 0.177 0.691 2.639 2.235 4 12 1 C ·695β C · 5 C 2 8.53 0 ·69 1 0. 136 0.751 2.638 2.297 4 1S52 • 9429 C.5C3 8.48 0 · 71 8 0. 102 0.719 2.591 2.239 4116 1 • 9472 0.512 8.55 0 · 6 74 0.153 €.796 2.641 2.134 41526 • 9526 0.547 8.54 €•697 0. 150 €.737 2.612 2.191 415 IC • 904e 0.599 8.55 0 ·7 1 2 0.061 0.807 2.606 2.289 41536 • 8679 C.735 8.56 €•646 0.152 0.740 2.616 2.091 41511 .8784 0.778 8.46 0.661 0.068 €.846 2.646 2.059 41511 • 9485 0.791 8.45 G · 6 4 7 0.10 1 0.834 2.649 2.053 41 593 • 8589 0.834 8.47 €•600 0.097 0.890 2.672 1.884 4 1 196 • 9819 0.946 8.22 0.544 0.120 0.970 2.685 1.788 41512 • 9033 0.966 8.13 0.567 €.066 0.977 2.700 1.864 4 1512 • 9451 €.974 8.11 €.573 0.051 1.024 2·684 1.807

Y LAC 4.3

4 1210^ 7361 0.015 8.75 0 ·383 0.132 1.055 2.701 1 .538 41210. 8590 €.€44 8.77 0 · 42 3 0.097 i.coa 2.683 1.663 4 15 134 904 1 0.131 8 ·9 1 0 · 4 64 0. 112 €.946 2.684 1.676 415134 9451 0.141 8 · 9 4 €.45 7 0. 131 0.904 2.721 1.790 4 1526, 93 8 € 0. 146 8.92 0.457 0.149 0.895 2.66 1 1.816 4 14 96« 8909 0. 197 9.02 0.498 0. 126 0.825 2.627 1.844 4 15534 7395 €.345 9.16 0.527 0. 172 0.749 2«678 1.945 4 1553. 9277 0.368 9.18 0.563 0. I 74 0.605 2.620 2.026 415 10. €818 0.432 9.27 0.555 0.161 0.691 2.652 1.908 4 1173. 9583 0 . 5 € 9 9.33 € .555 0.169 0.736 2.668 2.231 412084 9201 0.595 9.34 0.574 0. 162 0.598 2.672 1.955 41593. 8325 €.617 9.48 0.575 0. 18 1 €.664 2.642 1.9 39 415114 €679 0.66 1 9.44 0.581 0.154 €.676 2.632 2.065 415114 9375 €.677 9.44 €.606 0. 101 0.719 2.671 1.975 4 12 €9. 8722 0.615 9.30 €.535 0.102 0.720 2.695 1.923 41 1 9 6 « 9542 0.828 9.29 €.503 0. 149 0.725 2.665 1.945 415124 8636 €•891 8.95 0.451 0.089 0.928 2.674 1.660 41538, 8547 €.902 8.94 0.406 0. 139 0.900 2.679 1.631 415124 9248 0.905 8.88 0.4 2 0 0.131 0.908 2.719 1. 564 415384 9463 0.923 8.85 €.382 0.151 0.930 2.692 1.611

Ζ LAC 10.9

41161. 9556 €.023 7.94 €.596 0.114 1. 109 2.671 1.925 415 5 3. 9033 € . 02 8 7.91 € .6 27 0.121 0.974 2.688 1.957 415534 9541 €.033 7.91 0.633 0.09 1 1.010 2.668 1.995 41510. 861 1 €.074 8.08 €.710 0.08 1 0.835 2·651 2.084 41510. 9421 0.082 8. 1 1 0.667 0. 124 0.790 2.658 2.104 41173- 9472 0. 124 8. 17 0.685 0. 182 0.800 2.619 2.265 41195. 9792 0.148 8. 19 €.724 0.163 0.814 2.632 2.427 415 11. 9180 0.171 8.20 0.739 0.195 0.699 2.649 2.666 4 1174, 9611 €.218 8.28 0.765 0. 183 €.726 2.646 2.661 411964 9639 0.239 8.33 0.773 0.209 0.692 2.619 2.639 41512. 9353 0.265 8.23 €.832 0.175 0.638 2.622 2.713 41 1644 9437 0.297 8.41 0.826 0.191 0.628 2.563 2.631 411754 9389 0.307 8.42 0.846 0.213 0.628 2.646 2.904

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 635

APPEKCIX ICCNTINUEO)

JC PHASE y B-Y μι Cl EETA KH€2 24CCCC0·*

Ζ LAC 10·9 (CCNTINiiEO)

41206 »9292 0 · 338 8 · 45 € ·83€ 0· 24 9 0· 552 2 ·630 2.889 41176 »9910 0 «4 04 8· 77 € · 98 € 0.227 0 · 441 2·637 2.941 412C9 »8819 0·425 8· 63 €•890 €•289 0 · 41 2 2 ·590 3.474 41199 ► 9486 €•513 8 · 8 1 €•885 €•375 €•415 2·618 2.245 41210 »8854 €•518 8 ·8 0 0 ·93 3 0*260 €•489 2·6 1 1 2.832 41 S3 7 »9368 0· 56 1 8·80 0 « 8 8 6 0 · 3 0 3 €•475 2 ·6 1 1 2.527 41538 »9026 0· 65 C 8· 77 €•843 0·256 0 · 5 48 2.645 2.568 41593 »8484 0.698 β·69 0 ·8 38 0· 153 0 · 599 2·6 16 2.340 41496 »9014 €•792 β ·45 0· 764 €· 133 €•685 2.650 2.240 41235 »6604 €•794 8 ·47 €•736 €•164 0 ·75 1 41 160 »9375 €•929 8· 17 €•672 0· 1 0 8 €•936 2.642 2.014 4 1 204 »784C 0· 95 7 7·98 i €•602 0· 071 1 · 077 2 ·67 1 1.965 41204 »8312 0 · 96 1 2.705 1.865

BG LAC 5.3

4 1510« 8262 0 ·006 8.53 €.556 €· 1 € 2 0.940 2.710 1 .762 41174 4 9514 €•€13 8.56 €•522 0· 140 €.963 2.730 1.831 41510, 9255 €· €25 8 ·53 0 ·56 3 €•052 0.989 2.713 1.877 41526« 9236 €•025 8 ·56 €.551 0· 097 €.983 2.656 1.950 41553« 7173 €•€5 1 8 · 55 €.546 0·110 0.929 2.639 1.885 41537. 8652 €•€78 8· 59 €.556 0·1 1 1 0.880 2.664 1 .96 1 41553« 8853 €.€82 8 ·6 0 €.545 €· 156 €.869 2.669 1.889 41 537, 9263 €.089 8 ·58 €•576 0.098 €.883 2.664 1.967 41196« 7826 0 . 1 € 7 8 ·6 1 €.573 0.142 0.872 2.647 1 .93 4 41148« 9118 €. 129 8 ·63 €•569 €.133 0.848 2.340 2.076 41164« 9222 €.132 8 ·65 €.5 72 0. 133 €.859 2.660 2.006 41196« 9729 €.143 8 ·67 €.578 €.137 €.829 2.669 2.032 41175« 9701 0.204 8 · 7 3 0.635 0· 125 €.838 2.683 2.045 415 11. 9089 C.2€Ç θ.73 €.633 0.148 0.726 2.656 2.017 41554, €958 0.234 8· 79 0.632 € . 17 € 0.731 2.669 2.024 4 1538, 9248 €.276 8 · 83 €.€33 0. 189 0.683 2.622 2.222 41538« 9658 €.284 8 ·85 0.655 0. 143 €.758 2.643 2.304 41144« 9257 €.382 β ·90 €.68 1 0.21 6 €.620 2.626 2.303 41160« 9569 €.388 8 · 93 €.657 0.254 0.692 2.598 2.247 41176« 9812 0.394 9· 1 0 €.754 0.226 0.682 2.632 2. 194 41209« 8611 C.56C 9 ·06 €.705 0.207 €.596 2.577 2.405 41593« 8193 €.572 9· 14 €.72 I 0 . 2 € 9 €.645 2.597 2.247 41513. Ç 15€ €.586 9.07 €•729 0.226 €*530 2.644 2.1 13 41199« 8812 €.689 9 · 1 5 0.712 0.265 0.559 2.638 2.404 4 12 10« 8500 €.746 9 · 1 5 €. 7C5 0.259 €.471 2.633 2.228 41195. 9708 0.955 8·6 0 0 ·57 1 0.095 € .896 2.633 1 .708

Τ I^CN 27.€

4 € 162« 8923 €.€19 5.51 € . 5 0 € 0.249 0.805 2.670 2.056 41029, €069 €.096 5.67 €.589 0. 25 € €.731 2.652 2.300 41 € €3 « € 8 €6 €. 136 5.74 € .6 12 0.326 €.636 2.636 2.361 4 €9 49 « 76 17 €.141 5.73 €.619 0.306 0.674 2.637 2.363 41€3 1 « €125 € . 1 7 € 5.76 0.6 1 3 0.29 1 0.679 2.644 2.391 4 1 € 0 4 « €667 €.173 5.78 €.657 €.327 €.573 2.628 2.470 40978« 8179 0.216 5.84 €.724 0.338 €.574 2.625 2.53? 40979« 7166 0.249 5.89 € .74 1 0.380 0.471 2.633 2 .5€ 0

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 636 FELTZ AND McNAMARA

APPEND I X (CCMINVJED) cu JD PHASE V e-Y M Cl Ε ET A KI-C2 24CCCCC.+

τ VCN 2 7·0 (CCNTIMJEC)

4 098 2 « 7964 €•363 6 · C 0 €•808 0· 53 4 0 · 345 2.619 2 · 566 40963. 7463 0· 398 6.13 0.825 Ο. 53 8 €•261 2 ·5 98 2· 480 409e€. €458 0 · 5 C6 6.32 €•880 0 · 53 1 0.261 2 .6 09 2 · 5 15 4C933. 7986 0· 55 C 6.36 €•936 0·553 0 · 24 8 2.636 2 ·529 40988 « 6936 €•581 6.49 €.905 0 ·5 1 1 €•257 2·6 16 2 ·49 4 40934 i 7957 0.587 6.48 €•904 0· 642 0· 150 2 · 62 1 2 · 4 15 40990. 75 2 C 0 · 65 8 6.56 €•921 0· 495 0· 204 2 ·6 18 2 · 58 1 41C 17. 7764 0.658 6.50 €•933 0·509 0 · 2 28 2 ·6 15 40991. 6332 0·69 C 6.62 € ·9 1 θ Ο · 48 6 0 · 2 4 5 2*626 2·4 14 4C154. 9618 0.726 6.51 0 ·883 0·454 0 · 237 2·600 2 ·378 4 01£€. 8910 C.871 6.52 0· 8 1 6 0·40 3 €•361 2.61 7 2 · 2 11 4099C. 7568 €.880 6.57 0 · 845 0 · 36 1 €.340 2 · 61 5 2 · 252 41593. 9956 0.983 5.82 0 ·58€ 0· 2 05 €.711 2.634 2·067

Y CPH 17·1

4 1 496·8750 €.003 5 · 88 €.863 €•036 1 ·064 2 «6 84 2 · 1 62 40469·69 09 0.015 5· 6 8 €.853 Ο · 064 1 · 057 2 ·65 1 2 · 1 92 4C435.7847 0.035 5.92 0.849 0· 12 1 Ο · 924 2 ·64 1 40435.7957 0. €36 5.95 Ο · 8 7 2 €•097 1 · 030 2 ·638 2 · 2 26 40470.€646 €.€72 5.90 €•880 Ο · Ο 4 7 1 · €00 2 ·649 2 m 293 40419.7874 0.101 5.86 €•893 Ο ·063 0·963 2 ·634 2 *37 1 41 173.6771 0.128 5.97 Ο · 863 €•094 Ο ·95 1 2 ·633 2 · 295 40454.6707 €.138 5.87 €•903 Ο · 08 3 €·9€0 2 ·655 2 ·3 3 1 40848.6597 0.147 5.90 0·ε79 €•059 €•932 2 · 644 2 ·326 41122.7417 0.154 5.96 Ο · 8 7 3 0· 102 €•914 2 ·638 2.372 41 157.7097 0. 196 6.C0 €•915 Ο · 073 Ο ·938 2 ·66 1 2.451 41123.8396 0.218 6.09 Ο ·935 0· 078 Ο · 966 2 ·65 1 2.489 41038.9958 0·263 6.23 €•900 0· 132 Ο · 822 2·635 2 ·55 1 41142.7715 0.323 6.16 €•948 0· 152 €•759 2· 622 2 ·668 41125.8292 0.334 6.18 1 · Ο Ο 3 0· 074 Ο · 8 34 2 ·623 2·611 41126.8055 0.391 6.23 Ο ·97 Ο 0· 169 Ο · 74 3 2 ·6 05 3 · 1 15 41C41.9972 0.438 6.26 €•960 0· 1 02 Ο · 730 2.613 2 ·695 41144.7479 €.439 6.23 1 · 002 0· 176 Ο · 707 2.641 2.803 40408.7214 0.455 6.35 1 · 02 7 0· 192 Ο ·66θ 2·626 2.711 40768.7588 0.481 6.34 1.C20 0.210 €•671 2 ·563 2.678 40769.8110 0·543 6.28 1.027 0.118 Ο · 646 2·630 2.724 41043.9993 €.555 6.40 1.002 0.094 €.796 2.614 2.739 40821.6699 0.571 6.39 1.051 Ο. 191 €.622 2.626 2.701 40770.7847 0.599 6.34 1.028 Ο. 122 €.661 2.633 2.729 408C5.7061 0.639 6.35 1 · 003 0.117 0.627 2.617 2.64 1 40623·6978 0.689 6.38 1.002 0.151 0.763 2.617 2 ·636 40412.7493 0·69 0 6.37 1.010 0.117 0.721 2.631 2.600 40806.6755 0.695 6.41 0.961 0.167 0.645 2.622 2.552 41132.8493 0.744 6.32 €.999 0.136 0.746 2.603 2.609 41047.9930 0.788 6.30 €•963 0.066 0.763 2.657 2.505 40808.7097 0.814 6.37 0.974 0.126 0.824 2.645 2.457 40038.7257 0.847 6.30 0.975 0.116 0.779 2.623 2.425 41032·0167 0.855 6.27 0.898 0.123 0.980 2.627 2.508 40609.6812 0.871 6.12 0.91 1 0.113 0.882 2.651 2.379 41S11.7275 0.871 6.08 €.934 0.035 0.852 2.451 40125.6208 0.922 5·98 0.890 0.099 0.866 2.646 2.265 41512.7034 0.927 5.96 0.917 0.004 0.943 2.383

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 637

APPEhCI X (CCKTINtED)

JC PHASE V Ε-Y HI Cl EETA KHG2 24CCCC0.+

Υ ΟΡΗ I 7·1 (CCNTIΝUEO )

4010 £ « 64 1 C C . 930 5.98 0.880 0. 050 0.978 2.658 2« 229 40 1C8«€472 0.93C 5.97 0.868 0.086 0.937 2.655 2.280 40126·€14€ C. 98 0 5.94 C.899 0.082 0.929 2.656 2.270 41513.7161 0. 9€7 5.83 0.845 0.040 0.995 2.250 41496.7437 €.995 5.85 0.851 0.043 1 m 092 2.640 2.216 4 1496.7949 C. 99ε 5.87 0.862 0.022 1 .018 2.674 2. 187

AU PEG 2.4

41224 .6715 C.CC8 9.37 C.603 0.252 0 .65 0 4 1210 .7146 C.C 17 9.40 0.599 0.252 0.514 2.609 2.362 4 1512 .8923 0.036 9.35 0.597 0.265 0.543 2.685 2.434 41210 .8208 0.062 9.36 C .5 92 0.231 C.470 2.669 2.1 19 4 1553 .7283 0.067 9.33 C .569 0.325 0.433 2.655 41 174 .9292 0.093 9.39 0.519 0.293 0.591 2.672 2.139 41510 .8352 C. 179 9.27 0.576 0.195 0.498 2.634 1.955 4 15 10 .8943 0.203 9.19 0.566 0. 143 0.578 2.667 1.956 4 1184 .7944 c.2oe 9.10 0.496 0.219 0.643 2.677 41 1 96 .7930 0.211 9.15 0.489 0. 197 0.660 2.659 2.011 4 l 2 C € .8181 0.226 9.08 0 .474 0.220 0.635 2.646 1.951 41148 .9000 0.238 8.61 0.461 0.199 0.678 2.663 1.945 4 1 196 .8806 0.248 9.09 0.474 0.206 0.679 2.675 2.075 41160 .9167 0.250 9.10 0.466 0.236 C.690 2.608 2.049 4 1513 .861 1 0.440 9.02 0.492 0.253 0.680 2.678 2.119 41537 .8777 0.456 9.04 0.468 0.230 0.722 2.623 2.005 41 175 .8875 0.493 9.06 C .497 0.35 1 0.625 2.652 2.289 4 15 11 .8450 0.6CC 9.06 0.577 0.164 0.657 2.662 2.117 41209 .7722 0.624 9.14 0.572 0.227 0.646 2.656 2.165 41 173 .9139 0.670 9.20 0.536 0.367 0.489 2.648 2.246 41593 .7998 0.778 9.30 C.585 0.282 0.530 2.642 2« 114 41195 .8 160 0.804 9.28 0.607 0.271 0.592 2.656 2.150 41 183 .8750 0.824 9.29 0.615 0.236 0.578 2.659 41538 .8423 0.859 9.34 0.591 0.294 0.472 2.600 2.195 41 176 .9514 0.937 9.47 C.639 0.292 0.455 2.647 2.034

A* PER 6.5

40996- £999 0.081 7.09 0.639 —0.019 1.035 2.671 1.712 4 0983« 6790 0.082 7.07 C .646 -0.072 1.078 2.701 1.716 40 162. 8451 0. 085 7.03 0.624 0.046 0.982 2.688 1.691 40156. 7382 0.14 0 7.23 0.688 0.046 €.915 2.644 1.636 40990« 6345 0. 158 7.22 0.682 -0.011 0.932 2.663 1.83^ 41003. 6250 0. 168 7.20 C .693 -0.050 0.923 2.698 1.793 40990« 8130 0.186 7.25 0.688 -0.007 0.941 2.675 1.882 41CC3. 7882 0.193 7.47 0.746 -0.046 0.920 2.653 1.856 40121. 8083 0.283 7.41 0.764 0.032 0.735 2· 642 1.964 409 91 « 5908 0.306 7.43 0.749 0.011 0.727 2.636 1.970 40978. 6804 0.309 7.40 0.763 0.001 0.727 2.6 14 1.967 40978. 8533 0.335 7.38 0.769 0.013 0.686 2.618 2.004 40991. 7874 0.336 7.47 0.753 0.027 0.722 2.636 1.991 40923. 7568 0.358 7.46 0.818 0. 155 0.718 2«641 1.949 40979. 6616 0.460 7.49 0.777 0.015 0.615 2·637 2.022 40158. 8396 0.465 7.57 0.788 0.071 0.613 2.631 2.012

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 638 FELTZ AND McNAMARA

APPEND IX (CCNTINUED) cu JC PHASE e-Y Ml Cl beta KHG2 24CCCC0 .4

A ¥i PER e.5 (CCNTlNteO)

4€ς79. 8430 C · 4 € 8 7.62 0 · 8 0 5 0 · 040 C.590 2· 60 6 2.0 15 40534. 7493 0 « 5 1 2 7 #69 0.819 0. 178 0.567 2.607 1.972 40949. 7 192 0« 82 8 7·€8 0 · 7 8 4 0 · 02 8 0.587 2.634 1.914 4 C I £ 4 < 8931 0·85* 7 .57 0 · 749 0· 036 0.644 2.643 1 .839 4C988. 7297 €•863 7·68 0 · 7 72 0.0 14 0.645 2.636 1 .8 18 409 62 < 7222 0 · 9 3 4 7 · 24 0 · €6€ «0.043 0.868 2.682 1.668 41206. 9882 0 · 9 4 1 7 · 2 3 0.675 -0.006 €.9 05 2.694 1 .707

S S GE 8.4

4 116 1« 8167 0·001 5.33 0.402 0. 176 1.003 2.65 1 1 .956 4C1C5* 8028 0.018 5.30 0.425 0. 174 0.929 2.660 1 .938 40 105« 8076 C.018 5.30 0.412 0.20 1 0.9 05 2.654 1.920 40457, 8660 0.019 5.28 0.442 0. 186 0.949 2.676 1 .99 1 40114. 67 15 C. 076 5.36 €.452 0.202 0.857 2.656 2.039 40156. 5986 0.076 5.39 0.450 0.214 0.847 2.645 2.065 404 4 1 7915 C. 1 C 1 5.40 0.460 0.243 0.796 2.669 2.1 19 4 0 1 3 1 · 6680 0.103 5.39 0.459 0.22 1 0.806 2.642 2. 170 40766. 86 87 0.122 5.38 0.466 0.206 0.8 11 2.647 41137« 9354 0. 152 5.39 0.455 0.212 0.827 2.657 2.124 4 0 4 0 8« 8352 0.170 5.38 €.454 0.227 0.815 2.655 2.089 40 158. 66 6 0 0.324 5.6 1 0.545 0.266 0.657 2.639 2.278 40837« 6880 0.332 5.62 0.540 0.246 €.629 2.621 2.306 41164« 7798 0.354 5.63 0.552 0.23 7 €.664 2.611 2.323 40762- 6804 0.408 5.67 0 .574 0.293 0.596 2.607 2.414 40763« 8804 0.527 5.90 0.642 0.269 0.581 2.629 2.596 4 0 8 4 7« 7290 0.530 5.83 € .636 0.296 0.532 2.592 2.521 4 12 C 8 « 6931 0.593 5.92 C .650 0.318 0.5 68 2.612 2.641 41183« 8264 0.627 6.02 0.675 0.30 6 €.55 0 2.613 2.453 41175« 8625 0.677 6.01 0.667 0.305 €.510 2.624 2.490 41209« 6771 0.711 5.97 € .63 1 0.279 0.549 2.609 2.462 4 1117« 9403 0.766 5.87 0.553 0.285 0.619 2.624 2.327 40162« 6743 0.802 5.86 0.573 0.278 0.645 2.618 2.247 41210. 6889 0.831 5.70 0.528 0.21 1 0.679 2.636 2.100 40154« 7146 0.853 5.68 €.538 0.234 0.670 2.6 17 41160. 8625 0.867 5.43 0.466 0.219 0. 782 2.652 1 .985 40934. 5610 0.689 5.50 0.460 0.25 1 0.813 2.646 1.96 1 41177. 8625 0.915 2.669 1 .978 40 138. 6 132 0.932 5.36 €.4 10 0.185 0.896 2.671 1 .9 12 40465« 7588 0.96 l 5.26 0.39C 0.202 €.935 2.673 1.890 41496. 7881 0.963 5.27 0.4 1 1 0. 157 €.966 2.675 1.909 41144. 7396 0.964 5.28 €.390 0.209 €.893 2.659 1.892 415 13. 7410 0.986 5.21 0.414 G. 155 0.979 2.687 1 .912 40767« 8340 €.998 5.30 0.404 0. 194 €.936 2*685 1.920 40809. 7456 0.999 5.27 0.41 € 0. 169 €.994 2.664 1.917

U SGR 6.7

4 0768.8005 €.€53 6.28 0.609 0.117 1.002 2.637 1.932 41537.7180 €.053 1.892 415 1C.7722 0.056 6.31 0.6C9 0.124 0.979 2.675 1 .897 40458.6714 €.€74 6.36 0.655 0.117 €.995 2.642 2.003 40404.7896 0.085 6.32 0.613 0.122 1.000 2.625 2.010

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 639

APPEND I X (CCN ΤINt ED )

JC PHASE E-V VI Cl BETA KHG2 24CCCC0.4

U SGR €·7 (CCKTINUEO)

40809- 7090 0· 1 18 6 «36 €.647 0· 100 0.950 2 ·620 2 ·0 11 40 4II« 8027 C· 125 6 ·3 2 0·62ε 0· 119 €•882 2.6*7 2 · 06 5 41 I€ 0 a 7430 0· 162 6· 35 €•666 0· 184 €•772 2.617 2 · 0 49 40762« 8193 0· 166 6· 44 €•687 0· 1 06 €•983 2.629 2 · 252 40823« 7373 0·198 6 · 54 €•685 0· 182 0 · 8 75 2.616 2 · 151 41174« 7000 C · 2 3 2 6 ·5 1 €•710 0· 158 €•850 2.623 2 · 208 41120« 8396 0 · 2 4 6 6 ·59 €•707 0· 144 €•753 2.618 2 ·30 1 40837« 6687 0« 264 6· 53 € · 7 1 € 0· 164 €•735 2 ·64 1 2 · 300 40412« 7742 0.269 6· 61 0·713 0 ·2 14 0 · 682 2.662 2 ·356 40763« 7783 3 € 9 6· 75 0 ·765 0. 169 0.112 2.607 2 ·462 41 141« 7937 €•353 6 ·64 €•719 0 · 36 1 €•484 2.611 2 ·447 41114« 8667 Cm 36 I 6 ·59 0 · 744 0· 145 €•784 2.639 41148« 7826 0· 389 6·58 0 · 724 €•212 0 ·653 2.601 2 · 39 5 41121« 8444 0· 395 6 ·7 1 €•722 0· 204 €•774 2.5 85 2· 382 41513« 7673 0 · 5 € 2 6· 75 €•803 0 · 1 8 2 0 · 58 3 2.688 2 ·474 41115« 8514 0·5€7 6 · 85 0·8 14 0 ·23 1 0 · 5 8 3 2.576 40805« 7200 0·527 6· 82 €•844 0· 159 0 · 629 2 ·588 2 ·39 3 40765« 7971 0·606 6 ·85 0 · 83 3 0· 23 5 €•611 2.627 4 0428« 7554 €•638 7 · 08 0 · 8 7 3 0· 30 6 €•446 2.607 2 · 475 40408 « 7463 0· 672 7 · 0 4 €•857 0·307 €•485 2.608 2 · 688 408 €6« 7520 0 ·6€ € 7· 01 0 · 8 7 3 €•236 0 · 6 1 4 2.616 2 ·548 41137 i 7875 €•759 7 · 08 0 · 8 72 0 · 239 € ·5 € 1 2.602 2 ·495 41144« 7736 0· 795 6 ·96 0 · 8 1 7 0· 292 0 ·465 2.599 2 ·375 40038« 7944 0 « 8 2 3 7· 02 0 ·80 0 0· 23 6 €•560 2.589 2 · 4 3 1 40470. 6499 0· 850 6·90 0 · 783 0· 18 3 €•638 2.587 2 · 25 4 40767« 7708 0 · 90 1 6 ·7 3 €•696 0· 205 €•647 2.619 2· 122 40821* 7373 0 · 9 0 2 6· 87 0 ·798 0 · 17 4 0 · 320 2.62* 2 · 095 4C457. 7166 0·932 6·63 €•724 0· 188 0 · 852 2.632 2 ·076 40806« 7275 €•973 6·56 0· 674 0 · 12 1 0 ·9 02 2.681 1 ·9 1 4 41456« 8047 €•987 6· 37 0 ·646 0*068 €•931 2.65 1 1 · 9 0 3 41456. 8250 0 ·99 0 6·36 0 ·652 0.057 0 · 947 2 ·659 1 ·900

Y SGR 5·8

41160·7264 0·011 5· 25 €•462 0· 09 1 1 · 027 2 ·668 1.856 41137·7785 0· 036 5· 39 €•464 0· 13 9 1 · 0 1 2 2 ·649 1 ·858 40837·€609 0· 053 5· 34 0 ·442 €· 16 € 0 · 985 2·684 1 .889 41114·8590 €· €66 5 ·4 1 €•439 € · 178 0 ·94 1 2·662 404C4·7749 €•€73 5·39 €•476 €•176 €•911 2·686 1.885 40762·€047 0 · 08 7 5 · 42 0 ·495 0· 1 56 €•936 2 ·66 1 1.993 41120·€312 €•101 5·44 0 ·478 ο·ΐ7ε 0 ·902 2 ·65 3 1 .944 407€β·7756 0· 121 5·47 0 · 51 4 0· 157 0 · 93 8 2 ·63 3 2.019 41126·8118 €•137 5 ·46 0· 496 0 · 136 0 · 8 84 2.707 2.053 41161·7236 0· 184 5 ·5 0 €•533 0· 182 €•860 2.6*0 2 · 1 17 4042 8·7380 0· 223 5· 66 € ·59€ 0·20 1 €•803 2.6*7 2· 223 40 099·6764 0·22 7 5· 59 €•563 0.22 1 0 ·β 10 2.631 2 ·20 1 40 099·6812 0 ·22 8 5·60 €•560 C.229 0· 798 2.655 2 ·20 1 411 15·8361 0· 235 5·60 0 · 5 61 0.213 €•807 2.6 17 41Ι44·7562 0·245 5· 55 0 ·542 0.216 0 · 728 2.606 2.179 40763·7617 0 · 25 3 5.76 0 · 596 0. 184 0·788 2.653 2.303 40621·6819 0· 285 5.74 0 · 625 €•225 0.727 2.621 2.316 40411·7813 0.286 5·66 0 ·566 0·255 €•730 2.6 10 2.250 41122·8167 0·445 5· 80 €•614 0·22 7 0 · 665 2.6*3 2.*20

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 640 FELTZ AND McNAMARA

APPEND I )C ( CCNTINUEO ) cu JO PHASE Υ β—Y Hi Ci EE Τ A KHG2 2ACCCC0.+

Y S<3R 5 « 8 < CCNT I NiJED )

All A3* 7924 C.447 5.42 0.457 0.092 1.114 2.628 40 77 C « 8013 0*472 5.90 0.627 0.217 0.654 2.633 2.474 41157^ 7173 0.490 5.88 0.626 0.266 0.673 2.611 2.494 41117. 8340 0.562 5.93 0.647 0.285 0.547 2.622 2.361 4 1533« 7229 €.618 2.470 40036« 7493 0.674 6.11 0.688 0.259 0.568 2.615 2.491 40806. €846 0.687 5.99 0.670 0.268 €.559 2.605 2.438 41 164« 7389 0.706 6.06 0.680 0.293 0.514 2.604 2.393 4C4C8« 7332 0.758 6.13 0.643 0.296 0.619 2.618 2.359 41 142« 7833 C.9C3 5.59 0.519 0. 172 0.801 2.668 2.001 41177« 6 84 0 0.948 5.48 0.465 0.164 0.976 2.688 1.873 406 4 8« 6235 0.952 5.42 C . 46 7 0. 132 0.964 2.667 1.805 40467, 6262 0.959 5.35 0 ·455 0.154 0.953 2.648 1 .797 41183« 6743 0.986 5.33 0.443 0. 153 0.971 2.659 I .778 4 1512, 7546 €.986 5.29 0.449 0. 106 1. €26 2.700 1.776

Y 2 S GR 9.6

41513 .7764 €.€€3 6.97 0.579 0. 148 0.886 2.687 2.079 4 €768 .8152 €.€25 6.99 €.579 0. 165 €.985 2.624 2.086 41 160 . 759€ 0.051 6.91 0.596 0. 135 0.885 2.624 2.062 4 12 0 8 • 6444 0.064 6.91 €•589 0. 154 0.855 2.635 2. 134 41141 .8055 0.067 7.02 €•594 0.177 0.849 2.609 41122 .8632 €.085 7.06 0 ·6 1 2 €.205 0.768 2.650 2.196 4 1523 .7275 €.€91 7.19 €•651 0.126 0.772 2.226 41161 • 7299 €. 153 7.20 €.662 0. 195 €.737 2.660 2.341 40798 • 7542 0. 159 7.18 0.675 0.216 €.690 2.596 2.274 41209 • 6333 0.167 7.17 €.635 0.213 €.706 2.6 15 2.172 41142 • 8146 0.173 7.1 8 €.664 0.186 0.780 2.717 2.281 41123 • 8812 €.191 2.405 40 7 70 • 8171 0.234 7.20 0.732 0.176 €.597 2.61 1 2.502 41143 • 8194 C . 2 78 7.38 €.696 0.254 €.646 2.617 41554 • 6875 0·2ε5 7.39 €•763 0.245 €.562 2.479 41144 • 8021 €•381 7.44 € ·76 € 0.365 €.439 2.594 2.808 4C762 .7896 0.394 7.52 € ·8€2 0.294 0.503 2.589 41125 .8 750 €.400 7.53 0 · 769 0.322 0.491 2.622 2.629 4C763 • 8186 0 . 5 € 2 7.81 €•822 €.276 €.585 2.595 4 1 126 • 8500 C.5C2 7.63 €•708 €.370 €.241 2.590 3.031 41537 .7361 0.511 7.73 0.794 0.260 €.521 2.602 2.706 40038 .7708 0.608 7.69 C.747 0.269 0.536 2.62 1 2.443 41137 .8 160 0.650 7.54 € « 74 € 0.198 0.709 2.64 1 2.292 4 1118 .8743 0.667 7.39 0.71 I 0.214 0.587 2.629 2.2 19 4 1176 • 7618 €.726 7.42 0.661 0.240 €.643 2.606 2. 156 41511 .7749 €.794 7.17 €•618 0· 142 €.620 2.680 2.073 41148 .8028 0.800 7. 14 €•628 0· 152 €.784 2.646 2. 122 41 177 .7465 €.829 7.13 €•628 0. 169 0.823 2.653 2 · €92 41120 .8687 0.876 7.15 €.582 0.182 0.841 2.640 2. 156 4 € 09 8 .6715 €.878 7· 14 €.609 0. 165 C.819 2.636 2.186 40098 .6785 0.879 7· 12 0·613 0. 188 €.803 2.648 2. 198 41512 • 7734 0.898 7· 12 €•619 0.141 €.843 2.669 2.1 34 40767 .7949 0.918 7. 15 €•615 0.194 0.807 2.643 2.156 4 € 4 € 4 .8096 0.923 7.15 0.604 0. 177 0. 785 2.620 2.089 4 € €99 • 7007 €.986 7.04 €•571 0. 198 €.931 2.647 2.135

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 641

AFPENCI X (CCNTINteC)

JC PHASE Β — Y ^ I Cl eET A KHC2 24CC0C0 · 4

Y Ζ SGR ς.6 (CCNTINLED)

40099«7C56 7 · C 3 C · S 7 8 0*204 C « 892 2 «624 2.086 A 0 6 C €·76 5l 0.997 7· C6 C .626 0.167 0 · 9 l 8 2 · 6 4 3 2.091

EE SGR 6.6

4 12 10« €201 C.031 6.57 C .555 0. 142 €.855 2.635 2.04 1 4 1117« 8729 0.C57 6.55 C.575 0.172 €.801 2.675 2.063 4112 7« 8062 C.C61 6.69 C.567 0.215 0.850 2.636 2.€9 1 4 1177« 7222 C.C75 6.65 C. 6 05 € . 167 €.835 2.631 2.082 41144« 793 C C. 1 13 6.65 C.595 0.2 28 €.680 2 .674 2.113 41 16 4« 7479 C.12C 7.21 C.634 0.149 €.766 2.6C8 2.1 €0 41131« 8333 C.161 6.83 €.646 €.234 0.699 2.666 2.274 4 1118« 8646 C.2C7 6.73 €•661 0. 156 €.688 2.640 2.27 1 41125, 861 1 C.261 6.83 0.653 0.223 €.672 2.604 2.332 41145 4 8C62 0.266 6.77 € .662 0.147 €.737 2.612 41132« £743 C.317 6.82 C.671 0.226 €.674 2 .607 2.334 40 6 4 7« 6296 0.339 6.87 0.708 0.225 0.612 2.595 2.359 41 126« 8403 C.4C8 6.96 C.660 0.32 1 0.507 2.598 2.329 41133« 8201 C.46C 6.99 €.710 €.236 €.587 2.644 4 1 120« 8597 C.5C7 7.08 €.711 €.289 € . 55 € 2.600 2.424 41127. 8423 €.559 7.10 €.752 €. 25 € €.625 2.640 41121« 8576 G . 65 8 7.25 €.711 0.328 €.662 2.654 2.391 4116 1« 7479 0.668 7.21 €.77 3 0.207 0.634 2.576 2.387 41513« 7866 C.71C 7.18 0.73 1 €.273 0.500 2.644 2.4C8 41148« 7930 C.716 7. 13 €.829 0. 102 €.633 2.600 2.407 41540« 7061 C. 766 7.30 €.726 €.21 6 €.584 2.65 1 41 122« 8535 C.808 7 . C 2 0.636 €.266 €.602 2.656 2.223 41142« 8049 0.814 6.99 €.650 0.254 €.660 2.76 1 41136, 8174 0.912 6.92 €.592 0. 130 €.811 2.622 2.014 41156« 7687 0.918 2.624 2.006 41196« 654 8 0.927 6.63 €.569 0.167 €.759 2.659 2.037 41176« 7493 €.928 6.77 €.6 1€ 0. 103 €.873 2.63 1 1.987 41 123« 8674 0. 96 C 2.646 1.982 41143« 809C 0.965 6.66 52 1 €. 134 €.935 1.998 41183« 6826 €.973 6.60 574 0.093 €.927 2.636 2.037

V350 SGR 5.2

41 177 .6944 0.025 7. 11 € .5 € € 0. 184 €.989 2.725 41208 .6285 0.026 7.€2 0.471 €.133 €.988 2.667 1.850 40038 .€055 0.063 7.22 €.527 0.151 0.904 2.642 1 .968 40404 .7986 0.071 7.13 €.523 0. 187 0.916 2.67 1 1.925 41143 .8007 C. €79 2.585 2.223 41136 .8007 0.091 7.31 €.533 0.206 0.922 2.596 40 765 .8186 0.115 7.13 €.556 0.153 0.860 2.656 1.996 41131 .8160 0.124 7.26 €.572 0.151 0.854 2.674 2.085 41157 .7486 0.155 7.25 €.578 0.174 0.797 2.629 2.019 41126 .8319 €.157 7.26 €.551 0.117 €.657 2.647 2.054 40648 .6318 0.182 7.27 €.589 0.144 0.841 2.637 2.068 41173 .7111 0.252 7.28 €.644 0.088 0.745 2.635 2.149 41142 .7944 0.254 7.35 0.622 0.174 0.633 2.618 2.268 41127 *7972 0.284 7.47 0.675 0.107 €.730 2.652 2.095 41132 8625 0.327 7.40 0.686 0.095 0.752 2.586 2.187

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 642 FELTZ AND McNAMARA

ΑΡΡεκΟΙΧ < CC Ν TI NUΕO ) cu JC PHASE e-> Cl BETA KHG2 24CCCCC#*

V 3 5 O SGR 5.2 (CGMINUeO)

41 127»6354 0.35 1 7.50 0.634 0.196 0.659 2.648 4 1 122·8444 0.383 7.50 0.642 0.242 0.653 2.641 2.293 41117·ε61 1 0.416 7.45 0.676 0. 185 0.635 2.633 2.258 4041 I.£269 0.435 8.28 0.389 0.123 0.546 2.587 1.638 407€2·8233 0.535 7.64 0.714 0.209 0.614 2.645 41123.6507 0.578 2.635 2.233 41118.8514 0.608 7.66 0.712 0.189 0.574 2.628 2.199 41144.7833 0.639 7.64 C.763 O. 100 0.602 2.640 2.243 40763.7991 0.723 7.91 0.768 0.172 0.705 2.636 2.145 41160.7500 0.737 7.65 C.69C 0.258 0.479 2.623 2.185 41145.7875 0.834 7.46 0.594 0.124 0.747 2.587 41114.8771 0.837 7.43 0.612 0.098 C .780 2.615 40408.7700 0.842 7.5 2 0.613 0. 1 73 0.727 2.656 1.978 40 099.6882 0.875 7.32 0.547 0.207 0.942 2.664 1.916 40099.6931 0.876 7.32 C .577 0.145 0.949 2.620 1.823 41537.7249 0.876 7.37 0.571 0.103 0.846 2.666 1.870 41161.7389 0.929 7.08 0.504 0. 106 C .996 2.677 1.786 41156.7542 0.962 7.00 0.493 0. 115 0.990 2.688 1.788 41125.8451 0.965 7.02 0.519 0.047 1.034 2.745 1.793 40821.7478 0.966 7.21 0.573 0.1 18 1.098 2.692 1 .821 40419.7395 0.970 6.98 0.511 0.095 1.072 2.668 1.756 408 47.6136 0.984 7.04 0.537 0.073 1.041 2.673 1.796 41120.8493 0.996 7.09 0.490 0. 104 0.994 2.704 1.805

SS SCI 3.7

41141.8722 012 7.91 0.554 0. 119 0« 984 2.654 1.842 41512.7234 02 7 7.80 0.567 0.077 0. 863 2.677 1.869 41512.7832 043 7.84 0.545 0. 100 0< 947 2.683 1.868 41593.6172 061 1.788 41145.7354 064 7.88 0.579 0.057 0.906 2.633 41156.8097 08 1 7.94 0.564 0.089 0.935 2.652 41123.7958 088 7.9 1 0.588 0.058 0.958 2.677 1.860 40767.7825 115 7.92 0.573 0.129 0.895 2.675 1.861 41160.7021 14 1 7.94 0.577 0.1 10 0.876 2.579 1 .955 41160.7951 166 8.02 0.620 0.110 0.806 2.640 2.136 40114.6493 210 8.05 0.618 0. 152 0.767 2.642 2.1 17 41164.7139 234 8.10 0.649 0. 121 0.788 2.638 2.277 41120.7743 265 8. 18 €.629 0.158 0.794 2.639 2.140 41131.8000 268 8. 1 1 0.679 0.030 0.893 2.636 2.240 41120.9382 310 8.20 0.648 0.154 0.765 2.635 2.329 40419.8062 331 8.11 0.646 0.219 0.687 2.604 2.179 41117.8215 461 8.2 1 0.703 0. 123 0.695 2.663 2. 153 41117.9229 488 8.27 C .7 00 0. 120 0.755 2.623 2.224 41176.7701 517 8.37 0.709 0.181 0.626 2.639 2.251 41180.7215 0 . 594 8.32 0.705 0. 190 0.705 2.583 41540.6936 645 8.42 0.717 0. 134 0.732 2.582 2.284 41118.8007 727 8.38 0.708 0. 186 0.608 2.636 2.205 41118.9250 761 8.41 0.675 0. 196 0.627 2.616 2.136 41144.7632 799 8.34 C .6 93 0. 163 0.602 2.628 2.115 41122.7958 816 8.34 0.674 0.164 0.673 2.6 17 2.075 41122.9229 850 8.33 0.661 0. 129 0.749 2.592 1.985 41137.7083 878 8.33 0.657 0.049 0.860 2.619 1.858

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 643

APPEND IX (CGNIX NUEC)

JC PHASE Υ Ε-V M Cl EET A KHC2 54CCCC0.-f

5=S SCT 3.7 (CCNTINLEC)

41137.6298 0.91 1 8.13 0.621 0.122 0. 749 2.663 1 .924 0.911 8.0 7 €.616 0.132 0.690 2.648 2.008 4117 4·7 3 C5 0.962 7.92 €.55 1 0. 147 0.831 2.673 1.887

£Z TAC 3.2

40979.6005 €•€14 6.55 €.566 0. 128 0.893 2.640 2.020 40154·6β12 0.04 1 6.35 €.524 0. 1 73 €.800 2.657 4 1 2 C Ç·Ç993 0. 1 19 6.60 0.58 1 0. 158 €.803 2.638 2.091 4012€·95Θ2 0.173 6.48 €.573 0.156 0.755 2.6 17 2.071 4€986·6I 30 0. 177 6.56 €.589 0. 138 €.780 2.623 2. 142 40963·67P1 0.244 6.61 0.599 0· 149 0.7 18 2.620 2. 130 40156.6276 0.294 6.63 0.583 0.180 €.701 2.637 2.067 4C933.7471 0· 3 6 9 6.68 0.645 0.22 1 0.690 2.64 1 2.1 13 4C99C.€25£ 0· 452 6.65 0.573 0.180 0.718 2 ·6 19 2.093 40949.7034 €•456 6.62 0·591 0.15 1 0.764 2 ·639 2.045 40949.6066 €.489 6.57 0.589 0· 126 € .753 2 · 63 1 1.959 40990.7693 0.497 6.61 0.566 0· 1 13 €.797 2.629 2.003 40162.6271 0.564 6.57 0 .558 0· 176 0.731 2 ·64 5 1 .936 41CC3.S889 0.569 6.51 0.529 0· 1 17 0.82 0 2 ·660 1 .894 41003.7347 €.6 15 6.54 0.551 0· 102 €.868 2 ·68 4 1.900 40iee.7549 €.636 6.52 0.544 0. 126 €.855 2.654 1.942 40976.6895 0.66 1 6.44 € .539 0. 1 15 €.868 2.660 1.840 40976.8103 0. 7€ € €.37 €.523 0.111 0.9 17 2.666 1.843 40934.7361 € . 7 € 3 6.39 €.509 0.189 0.902 2.655 1.759 40131.8366 €.723 6.45 0.535 0. 143 €.853 2.657 1.820 40991.61 1 1 0.765 6.37 €.504 0. 112 €.9 10 2.660 1.8 18 40991.7542 0.810 6.39 € ·5€6 Ο. 127 €.949 2.667 1.829 40968.7207 0.647 6.39 €.526 0.121 0.930 2.652 41CC4.6076 0.692 6.39 €•53 1 0.092 0.905 2.655 1 .860 4 1 C C 4 . 7 3 6 6 €.933 6.39 0.5 15 0. 1€€ 0.933 2.660 1 .9 18 40982.7144 €.939 6.32 €.541 0.060 0.6 84 2.633 1 .927 40138.6326 0.944 6.41 €.529 0. 105 0.9 17 2.655 1 .884 40979.6707 0.973 6.38 0.528 0. 119 0.869 2.642 1.936

ALPHA CVI 4.0

40114.7951 0.031 1.94 €.34 1 0.245 0.801 2.655 2.036 40138.7194 0.056 1.95 €.363 0.229 €.802 2.635 1 .922 4012€.9736 €.€99 1.96 0.344 0.234 0.804 2.656 1 .990 4C4C4.9089 €.112 1 .97 0.339 €.270 €.753 2.646 2.026 40 If8.6 174 0.120 1.89 €.329 0.249 €.787 2.655 2.00 1 401S5.CC97 0. 161 1.96 0.347 0.267 €.764 2.639 2.039 41496.9566 0.202 1.9 7 €•37 1 0.234 0.818 2.608 2.045 415 12.9541 0.232 2.01 0 ·359 €.24 1 0.796 2.633 2.038 4C 099.9861 € . 3 € 1 2.02 0· 36 7 €.250 €.761 2· 645 2.077 40099.9910 0.302 2.03 0 ·366 0.248 €.759 2.644 2.071 40131.7979 0.314 2.00 €.373 0.246 0.775 2.642 2.065 39754.7486 0.334 €.376 0.256 €.781 2.616 41513.6755 0.413 1.93 €.364 0.266 €.740 2.669 2.083 415 13.9541 0.463 2.06 €.388 0.239 0.767 2.636 2.071 40106.8458 €.532 2.00 €.377 0.246 0.762 2.640 2.06 9 41537.9797 €.536 2.02 €.369 0.242 €.760 2.644 2.033

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 644 FELTZ AND McNAMARA

APPENDIX (CCKTINteO) cu JC PHASE Y B-Y Ml Cl EET A KHG2 24CC0C0·4

ALPHA CM A.O (CCNTIKLEO)

41593 • 5796 0 #54 1 2.€22 41553 • 9612 0·566 2.07 €.356 0.282 C .732 2.645 2.044 40156 • 7167 0 «59 1 1 ·96 Ο ·3 7 Ι 0.259 €.772 2.634 2.061 39755 • 7715 0·592 0.356 0.294 €.749 2 ·642 41594 • 0103 O · 65 O 2· €0 €•362 0.259 €.739 2.645 1.986 4 15 IC • 7012 0· 664 2· 00 €.356 0.276 0.789 2.6 19 2 ·035 41526 • €790 C· 689 1 ·97 0.363 0.242 0.785 2 ·644 2.072 41510 9590 €•729 1 ·99 €.386 0.200 C.791 2.650 2·0 14 4 1526 • 9C5€ C ·76 1 1 ·97 0.376 0.245 0.769 2.633 2.0 10 41554 • ε 11 c 0.775 1 ·95 0.356 0.223 €.804 2.655 2 ·0 Ο 8 41538 • 9873 0· 769 1 · 99 €.332 0.273 0.753 2.6 16 I .998 4C125 • 9292 0·636 2·0 1 €.366 0.242 0.764 2.650 1 .995 39760 • 7776 C· 653 €.344 0.247 €.793 2.627 40419 • 7700 €•655 2 · 03 €.366 0.238 €.801 2.640 2.035 40411 • 9485 0.885 1 · 97 0.336 0.265 €.814 2 · 635 1.999 39772 6186 0.866 0*349 0.237 €.816 2 ·639 41511 • €6 87 0·908 1 ·88 0.356 0· 2 1 5 €.838 2 · 643 2 ·033 40435 • 9319 0.926 1 ·8 2 €.362 0· 23 Ο €•815 2 ·636 2.019 41511 • 9651 0.962 1 ·92 0.364 Ο. 190 0.820 2.646 2.016

Τ VCiL 4.4

40933 • €145 €•0 5· 4 7 €.321 0.207 1 · € 06 2 · 6 6 1 1.706 41199 • 6132 O · 01 4 5 ·42 0.333 0« 164 0.969 2.661 1 .728 41137 • 7180 €•€15 5 ·50 €.336 0. 156 €.975 2.701 1.756 41208 • 7396 €•027 5 · 43 0.336 0. 166 €.962 2.660 1.772 40108 • 7215 €•026 5.43 €.329 0.179 0.950 2.670 1.779 41137 • 8956 €.€55 5· 48 0.338 0. 193 0.921 2.662 1.813 40809 • 8533 €.€96 5·55 €.371 0. 179 €.891 2.656 1.836 41 177 • 6847 €.071 5· 49 0.351 0.201 0.875 2.644 1.897 40126 • 7805 0.099 5· 52 €.342 0.212 0.863 2.638 1 .891 41204 • 7215 €.121 5·59 0.377 €.191 0.638 2.660 1 .931 41164 • 8910 €. 141 5.62 €.375 0. 199 €.833 2.646 1.968 40419 • 6694 0.176 5.61 C.41C 0.213 0.777 2.637 2.022 40426 • 8137 0.193 5.75 0.4 14 0.216 €.752 2 ·6 3 1 2.094 40 1€2 • 7173 C.2€l 5.71 €.420 0.246 0.748 2 ·628 2.029 40131 • 7000 0.2€6 5.65 0.410 0.213 0.754 2 ·6 30 40934 • 6179 0.226 5.68 € . 4C2 0.267 €.764 2.619 2.037 39772 • 6174 0.253 €.446 0.206 €.734 2.618 40158 • 7180 € ·3 € 0 5.79 0.435 0.241 €.678 2·624 2.113 40770 • 9104 €•318 5.78 0.462 0.236 0.66 1 2 · 634 2. 184 40411 • 9165 €•363 5.81 0.460 0.257 0.668 2.6 07 2.111 40154 • 7479 €•405 5· 97 €.506 0.259 0.624 2 ·606 2· 158 39755 • 7042 € · 4 4 € 0.475 0.271 0.623 2.6 08 41161 • 9222 O ·472 5·98 0.479 €.260 0.642 2.617 2 ·224 41210 • 7875 €•466 5 ·95 €.508 0.22 1 €.620 2.635 2.154 39760 • 6667 O· 559 €.493 0.258 €.606 2.602 41144 • 8993 €•634 6 ·04 €.476 0.313 €•514 2.637 2. 136 40138 • 6667 0· 7 79 5 ·96 €.453 Ο. 197 €•686 2.620 1.936 40821 • 8284 0.796 5· 84 €.406 0.200 0·735 2.65 1 1 ·8 64 41176 • 9042 O· 649 5·61 0.347 0.175 Ο · 853 2.664 1 ·728 40125 • 7569 0.869 5 ·54 0.340 0. 174 €•905 2.680 1 ·686 41540 • 7214 0.872 5·49 0.336 Ο. 171 €•975 2.685 1 ·669

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 645

APPEND IX (CCNTI NtiEC)

JC PHASE Y e-v Hi Cl eeiA KhG2 24CCCC0 · ♦

Τ VUL 4 ·4 (CCMIKUeC)

4C467.7610 0 · 9 7 3 5 · 39 0.299 0. 177 0.996 2.694 I .676 4 1496·8340 €•976 5.39 €.325 0. 146 1 . C I 1 2.669 1.729 41208.6083 €•997 5 ·38 C.3C7 0. 162 0.98 I 2.675 1.719

t VCL 8.0

40821.7817 0.034 7.4 9 1.014 0. 172 €.585 2.595 2.587 40837.7817 0.036 7.5 1 €.996 0. 140 € .604 2.609 2.575 40iee.ejC6 0.043 7.54 1.0 16 0. 1 76 €.594 2.630 2.530 40038.6549 0.054 7.51 € .987 0.178 0.578 2.603 40470.7915 0 · 1 C 9 7.24 € .896 0. 106 0.492 2.619 2.366 404 14.8652 C. 1 10 7.36 €.965 0. 150 €.652 2.605 4 09 3 4.5513 C. 146 7.34 €.957 0.219 €.592 2.631 2.403 40806.8081 0.160 7.30 € .938 0.098 0.674 2.624 2.33 6 415 1C.7546 0.256 6.97 €.852 -0.009 0.854 2.69 1 2.065 40847.7158 0.279 6.86 0.814 €.€5 0 0.932 2.671 1.962 4 1 183.7549 €.333 6.77 €. 806 -0.00 1 1 .024 2.664 1 .847 4 1 199.7366 0.333 6.73 0.766 €.01 1 1 .€39 2.661 1.955 41 135.6597 0. 339 6.75 €.761 0.003 1.039 2.650 1.93 6 41 175.6403 0.343 6.80 €.777 0.022 0.993 2.663 1.95 9 4151 1.7354 0.379 6.78 € . 7 8 € 0.005 1.036 2.645 1.985 4 15 1 1.8159 €.369 6.80 €.804 -0.020 1.032 2.662 1 .989 41136.7854 0.455 6.99 €.612 0.077 €.882 2.649 41 144.6444 0*464 6.85 0.826 0.071 €.861 2.631 2. 138 41160.6528 0.467 6.76 0.649 0.041 €.895 2.64 0 2.237 41 120.9472 0.473 6.90 €.824 0.037 1.044 2.663 2.074 4 1496.7546 C.5C4 6.90 0.868 0 . € €9 1.034 2.660 2.122 4 1552·7832 0.516 6.98 €.856 0.062 €.6 72 2.140 40 162.6847 0.551 7.00 €.901 0.082 €.807 2.657 2.309 41137.6966 0.570 6.99 €.643 0. 024 0.889 2.674 2. 177 41121.6993 0.592 6.93 0.840 0.013 0.868 2.657 2.251 4 1 177.6389 0.593 2.653 4 1 127.9026 €.595 6.92 €.860 0.009 0 .862 2.674 2.263 41553.8179 €.645 7.04 0.685 0.057 €.849 2.664 2.324 40099.7965 0.680 7.17 €.918 0. 104 0.741 2.644 2.29 3 40099.8021 0.661 7.07 €.923 0.104 0.692 2.6 1 1 2.312 41 122.9069 0.718 7.17 0.916 0. 135 0.712 2.612 2.448 41554.8005 €.766 7.23 €.958 0. 127 0.682 2.633 2.545 40 108.6854 0.793 7.26 €.972 0. 122 €.627 2.601 2.510 40125.6618 0.917 7.36 1.0 10 0.157 €.581 2.588 2.639 40413.9026 0.969 7.45 1.C13 0.166 0.621 2.603 2.625

X VljL 6.3

41199.7456 €.€€6 8.39 €.689 -0.094 1.284 2.685 1.634 41160.8090 0.CC9 8.33 0.674 -0.137 1.232 2.689 41496.7764 0.009 8.42 €.908 -0.145 1.291 2.720 1.978 41161.6639 0.011 8.44 €.898 -0.099 1.243 2.685 1.924 41199.7917 €.€13 8.42 0.664 -€.037 1.129 2.668 2.138 41496.643C €.019 8.41 €.910 -0.154 1.263 2.686 1.942 41174.6597 0.066 8.42 €.918 -0.093 1.124 2.711 2.102 41554.7061 0.176 8.65 €.975 -0.084 1.019 2.640 2.116 41175.8521 0.225 8.66 1.045 -0.078 0.914 2.663 2.200

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System 646 FELTZ AND McNAMARA

APPEhCÎX {CCKTINUED) cu JC FHASÊ > B-Y Cl eeTA KH€2 24CCCC0.···

X VtL €·3 (CCNTINUEO)

4 115 6 • 9076 C.227 8.65 1 ·042 -0.066 1· 152 2.589 4151 C • 6457 0.235 8 ·66 1 · 0 3 7 • 0·06 7 €•982 2.664 2· 22 0 4 1 176 • 6535 0.363 8 · 82 1 ·€62 Ό ·0 1 1 0 ·747 2.612 2 · 72 4 41195 • €076 €•363 8 · 84 1 · 0 36 0 · 047 0 · 8 05 2.642 2 · 6 € 8 4 15 11 • 8047 C.367 6·8 1 1 · 074 •€•094 0 · 97 3 2.639 2 ·606 41 1 64 • 6CCC 0 ·476 8 · 94 1 · 1 1 9 0· 02 0 € · 8 06 2.608 2 ·078 41163 .6014 0· 483 8 · 97 1 · 1 19 0.015 €•786 2.628 2 · 3 4 3 4 1527 • 8276 0 · 5 C 5 9· €0 1 · 1 1 1 •0.054 0 · 909 2·665 2·8 17 41 177 • 7743 C· 529 8 · 9 7 1 . 126 €•083 0 · 69 1 2 ·67 4 4 1 2 C 9 .6674 €•576 9 · 0 9 1 .108 €•€15 0 · 838 2 ·657 2 · 7 2 3 4 1 165 • 7847 €•632 9 · 15 1.131 €•030 €•776 2· 608 4 1 184 .8555 € · 65 € 9 · 12 1.166 0· 082 1· 134 2.669 41513 • 634 C €•708 9· 18 1.149 0 ·04 1 €•689 2·668 2 ·900 4 1 2 1 C .6944 €•738 9 · 20 1 .164 0·001 0 · 649 2.652 3 · 458 4 1 1 6 C .6708 0· 854 8.87 1.15 1 -0· 1 17 0 · 823 2.587 2 · 084 4 1533 .7727 0·ε63 8 ·98 1.058 -0· 1 1 1 0 · 862 2 · 696 2 ·220 4 1173 .8750 €.9 12 8 · 72 €.979 - 0 · 153 1 · 2 13 2 ·6Θ 3 2 ·029 4 1540 .7686 0· 970 £•44 €.900 - 0·08 3 1 .183 2 · 7 I 3 2 · Ο 2 6

SV VtL 4 5·Ο

415 I 1· 7964 €•€€8 6.77 €. 81 € €.057 1 . 1 07 2 · 68 1 2 ·409 4 119 6. 7243 €•€12 6.72 €.817 0.067 €.944 2.678 2 · 385 41196. 8 €42 €.014 6.74 € .799 0.090 1.007 2.6 79 2 · 4 11 4 15 12. 6352 €•€31 6.81 €.803 0.107 0.906 2.679 2 · 3 8 9 40837. 8005 €•€42 6.82 0.824 0.120 0.954 2.662 2 ·375 4 15 13. 8442 €•€54 6.85 0.842 €.095 € . 9 €6 2.666 2 ·40 3 4 1 199· 7625 € · Ο 8 € 6.82 €.871 0. 154 0.794 2.629 2 · 50 3 40435· 6596 0· 1 17 6.94 € .907 0.225 €.712 2.636 2 · 6 11 4 € 4 3 5 · 6687 0· 1 17 6.93 €.921 0.210 0.7 38 2.66 1 41156· 8951 0· 126 6.94 € .93 1 0.193 0.764 2.624 4 1 157· 7625 € · 147 7 . € Ο € .947 0.19 1 Ο .654 2.632 40933· 6047 € · 1 7 € 7. 15 1 .€54 0.369 0.Ö35 2.676 2 ·9 10 40798· 8152 €•177 7.01 €.978 €.227 0.629 2.608 2 · 8 € 1 40798· 8262 € · 177 7.02 €.983 €.217 €.633 2.615 2 ·8 3 3 40934· 5708 0· 191 7.01 €.994 €.365 €.706 2.638 2.775 40844· 75 12 0· 197 7.03 1 . € 1 2 0.238 €.644 2.607 2.866 40 125· 72 15 Ο · 23 1 7. €9 1 .€19 0.282 Ο . 543 2.620 2.945 4 € 4 4 1 · 7756 €•249 7. I 1 1.030 Ο . 3 €5 0.511 2-627 2.832 4 € 8 4 8 · 7144 €•265 7.17 1.058 0.317 C.5C0 2.6 17 2.877 40805· 6381 Ο· 333 7.27 1 .094 0.366 €.452 2 · 55 8 2.918 4 € 6 € 6 · 6257 Ο · 355 7.26 1 .€94 0.335 €•454 2 ·6 2 2 3.033 406 € 8· 7456 0·39 7 7.30 1 . 128 0.31 1 Ο · 39 3 2 ·6 2 Ο 2 · 85 0 4 € 76 3· 8604 € · 4 C € 2 · 9 2 4 40765· 8936 €•446 7.27 1.141 €.323 Ο · 49 5 2 ·595 40767. 6 167 €•488 7.43 1.163 €.357 Ο · 399 2 · 6 13 2 ·877 41 132· 9 €2 6 €•595 7.58 1.151 0.376 €•403 2.601 3 ·0Ο 1 41133· 6875 €•617 7.63 1 .149 0.385 Ο · 5 2 1 2.649 4 € 82 1 · 7922 0.667 7 · 7 3 1 . 19 € 0.446 Ο · 21 4 2.622 2 · 979 4 € 8 2 3 · 7922 0.731 7 · 75 1.157 €.390 Ο ·427 2· 589 2 ·785 41141· 8542 €•794 7.66 1.122 0.328 €•193 2 ·627 2 ·599 41593· 71 €2 €•827 7.65 1. €92 0.223 0·529 2 · 3 8 8 2 · 8 6 3 41 144· 8604 €•86 1 7.28 0.952 0. 193 Ο · 656 2·6 30 2 ·52 1

© Astronomical Society of the Pacific · Provided by the NASA Astrophysics Data System COLOR EXCESSES OF CLASSICAL CEPHEIDS 647

APPEND!> (CCNTINUED)

JC PHASE V B-V Cl EET A KhG2 24CCCC0·-*·

SV VLL 4**0 (CCNTINUED)

Α1552·7097 0·917 6·81 0·791 0.111 0·960 2·697 2·144 41S £2·7 749 0,918 6·85 C#782 0·085 C.969 2.683 2.165 4 1553.7068 0.939 6.76 C.759 0.093 1.037 2.683 2.129 41553.8020 0.941 6.79 C.767 C.C67 1.057 2.669 2.125 41148.8187 0.948 6.72 C.763 0.072 1.066 2.679 2.130 41554.6714 0·960 6.80 0.766 0.066 1.137 2.115 41554.7583 C.962 6.75 0.758 0.081 1.046 2.139 40114.6937 0.986 6.71 0.772 0.104 1.C20 2.676 2.218 41195.716C 0.990 6.67 C.779 0.097 1.027 2.667 2.267 41195.8250 0.992 6.71 €.781 0.090 1.023 2.678 2.249 coincident with the shorter-period stars. This coinci- 71-184). dence, in the light of our photometry of LMC and SMC Kraft, R. P. 1961, Ap. J. 134, 616. cepheids, gives us confidence that the reddening of the Krön, G. E., and Svolopoulos, S. 1959, Pub. A.S.P. 71, 126. d Makarenko, Ε. N. 1971, Sov. Astr. 14, 970. longer-period cepheids (P > 10 ) has been determined McNamara, D. H. 1969, Pub. A.S.P. 81, 68. with good accuracy in spite of the paucity of long-period Miañes, P. 1963, Ann. d'Ap. 26, 1. calibration cepheids. Mitchell, R. I., Triarte, Β., Steinmetz, D., and Johnson, H. Interpretation of our cepheid photometry in terms of L. 1964, Bol. Obs. Tonantzintla y Tacubaya 3, 153 (No. 24). temperature, surface gravity, metal abundance, and posi- Nikolov, N. S. 1967, Sov. Astr. 11, 92. Oosterhoff, P. Th. 1960, B.A.N. 15, 199. tion of the variables in the instability strip will be con- Parsons, S. B., and Bouw, G. D. 1971, M.N.R.A.S. 152, 133. sidered in subsequent papers. Schmidt, Ε. G. 1971, A./. 76, 1102. 1972, Ap.J. 174, 595. This research was supported in part by the National 1975, M.N.R.A.S. 170, 39P. Science Foundation. Schneider, M. 1969, Astr. and Ap. 2, 195. Strömgren, Β. 1963, in Basic Astronomical Data, Κ. Aa. Strand, ed. REFERENCES (Chicago: University of Chicago Press), p. 123. Bahner, W., Hiltner, W. Α., and Kraft, R. P. 1962, Ap. /, Suppl 6, Tsarevsky, G. S., and Yakimova, N. N. 1970, Peremennye Zvezdy 17, 319. 120. Crawford, D. L. 1964, in Spectral Classification and Multicolour Pho- Turner, D. G. 1977, Pub. A.S.P. 89, 550. tometry, l.A.U. Symposium No. 24, K. Lodén, L. O. Lodén, and U. Walraven, T., Muller, A. B., and Oosterhoff, P. Th. 1958, B.A.N. 14, Sinnerstad, eds. (London: Academic Press), p. 170. 81. Feltz, Κ. Α., Jr. 1972, Pub. A.S.P. 84, 497. Wampler, J., Pesch, P., Hiltner, W. Α., and Kraft, R. P. 1961, Ap. J. 1976, Pub. A.S.P. 88, 709. 133, 895. Feltz, Κ. Α., Jr., and McNamara, D. H. 1976, Pub. A.S.P. 88, 699. Williams, J. A. 1966, A./. 71, 615. Fernie, J. D. 1963, A./. 68, 780. Yakimova, Ν. N., Nikolov, N. S., and Ivanov, G. R. 1975, in Variable 1967, AJ. 72, 422. Stars and Stellar Evolution, l.A.U. Symposium No. 67, V. E. Sher- Gascoigne, S. C. B., and Eggen, O. J. 1957, M.N.R.A.S. 117, 430. wood and L. Plant, eds. (Dordrecht: D. Reidel Pub. Co.), p. 201. Kelsall, T. 1971, Thesis, University of Maryland (NASA Report X-641-

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