1970AJ 75. . 602H THE ASTRONOMICALJOURNAL various PopulationIobjects,theopticaltracersof investigators havestudiedthespacedistributionof spiral structure.Theresultsofthesestudieshavebeen reviewed bySharpless(1965).Unfortunately,the optical observationsarerestrictedtoarelativelysmall neutral hydrogen,nothamperedbyinterstellarab- region nearthesunwhile21-cmobservationsof SINCE thepioneeringworkofMorganetal.(1952) sorption, displayalarge-scalespiralstructureoverthe kiloparsecs ofthesunhaveindicateddiscrepancies data, however,requiresknowledgeofthedifferential entire diskoftheGalaxy.Interpretationradio rotation oftheGalaxy.Comparisonsbetween spatial distributionofthestarsandgaswithinafew by Rubinetal.(1962)andFletcher(1963)haveshown that theradialvelocitiesofyoungPopulationIobjects and theassociatedgasaregenerallyinagreement. possible tomakeacomprehensivestudyofthedistri- several yearsagobyBidelman(1958)andSharpless the intermediateandlate-typesupergiantsweremade bution inspaceandvelocityofthesupergiantsall become availableforthesestars.Asaresultitisnow (Becker 1961;Sharpless1965);however,investigations is operatedbytheAssociationof UniversitiesforResearchin stellar gascloudsinwhichtheypresumablyoriginated. spectral types,andtodiscusstheirrelationtheinter- Astronomy, Inc.,undercontract withtheNationalScience Tennessee. luminous stars.InSec.IVtheresultsofleast-squares and Sec.Illdescribesthespacedistributionofthese Foundation. noncircular groupmotionsamongthesupergiants. cussed. SectionVdescribesthecomparisonofstellar solutions fortheGalacticrotationconstantsaredis- and gasvelocitiesSec.VIdiscussesevidencefor (1965), butinthepastdecademuchadditionaldatahas * VistingAstronomer,KittPeak National Observatory,which f NowatDyerObservatory,Vanderbilt University,Nashville, Preliminary discussionsofthespacedistribution The nextsectionpresentsacatalogueofsupergiants © American Astronomical Society • Provided by theNASA Astrophysics Data System on thedistancesofGalacticH11regions,many -1 -1-2 included asacatalogueofsupergiants.Sixtypercentthesesupergiantsoccurinstellargroups.Least- emphasis onthecorrelationoftheseyoungstarsandinterstellargas.Theusedforthisstudyare squares solutionsfortheGalacticrotationconstantsyield14kmseckpcOort’sconstantanda meaningful resultforthesecond-ordercoefficientof—0.6kmseckpc.Adetailedcomparison in parttotheseshearingmotions. relatively densegas.Thevelocityresidualsforthestarsalsoindicatenoncirculargroupmotions.In in agreementwithLin’sdensity-wavetheory.ThevelocityresidualsthePerseusarmmayalsobedue stellar andgasvelocitiesinthesameregionsshowsgoodagreement,theseluminousstarsoccur Carina-Centaurus region,systematicmotionsof10km/secwerefoundbetweenthetwosidesarm The distributionandkinematicsofthesupergiantsallspectraltypesareinvestigatedwithspecial I. INTRODUCTIONII.THECATALOGUEOFSUPERGIANTS The SpaceDistributionandKinematicsofSupergiants (Received 15January1970;revised1April1970) University ofMichigan,AnnArbor,Michigan Roberta M.Humphreys*f VOLUME 75,NUMBER5 602 largely obtainedfromtheliterature.Useofacardfile compiled byDr.W.P.Bidelmanwasveryhelpfulin this regard.Recently,aconsiderableamountofnew from KittPeakandMichiganinformationnot supergiants itwaspossiblefortheauthortoobtain the Perseusarm(Humphreys1970),andformanyother observational datawasobtainedforMsupergiantsin kindly madebyDr.S.WyckoffandD.J.Mac- Tololo Observatories,respectively. available intheliterature.UBVobservationswere metric dataforadeterminationofdistances,reliable class lborbrighterwhichhadeithersufficientphoto- Connell of22and34supergiantsatKittPeakCerro Table Iandgivesthestar’sidentification,MKspectral radial velocities,orboth.Thiscatalogueisincludedas longitude andlatitude.ThemagnitudesB—V type andluminosityclass,positioninGalactic may belongareincluded.Referencestotheobserva- colors, distancesfromthesunandGalacticcenter, velocities isdiscussedbelow. observed radialvelocities,andmodel as welltheassociationsorclusterstowhichstars stars fainterthan6^5(FeastandThackeray1958).The tional dataarealsogivenforeachstar.Acorrectionof determination ofthedistancesandmodelradial + 10km/secwasappliedtotheLickvelocitiesofB were computedfromthespectroscopicabsolutemagni- the B—VcolorexcessesfromJohnson’s(1966)intrinsic tudes usingBlaauw’s(1963)luminositycalibrationand colors withR=3.0fortheratiooftotal-to-selective computed ontheassumption thatthesun’sdistanceis absorption. DistancesfromtheGalacticcenterwere model fortheGalacticrotation. Fromtheexactequa- would beexpectedtohaveon thebasisofanadopted tion fordifferentialrotation andassumingseparable 10 kpc. The observationaldatarequiredforthisstudywere A listwascompiledof669supergiantsluminosity The distancescorrectedforinterstellarreddening The modelradialvelocityis thevelocitythatastar JUNE 1970 1970AJ 75. . 602H potential functionsintheGalactic planeandintheZ direction, itcanbeshownthat HD 168021C HD 166167 HD 164402 HD 164019 HD 161291 HD 164032 HD 171432 HD 174947 HD 167356 -19 4955 HD 167287 HD 166628 HD 167264 HD 165784 HD 165516 HD 148743 HD 164514 HD 163428 HD 167451 HD 168814 HD 167838 HD 168625 HD 168607 HD 171012 HD 168552 HD 168021AB -14 5037 HD 170938 HD 165319 -6 4837 -14 5030 -14 5029 -1 3542 HD 173820 HD 167330 HD 169034 HD 169454 HD 177812 HD 176077 HD 173783 HD 169754 -13 5061 HD 170159 HD 170177 HD 171094 -12 4970 CASE 49 HD 167311 HD 180028. HD 178129 HD 172365 HD 164353 HD 173438 -4 4573 HD 173987 -6 4834 HD 173010 HD 172403 HD 170716 -12 5166 •V492 AQL AX SGR MU SGR NU AQL RZ OPH UW AQL RZ SCT Star Sp.type © American Astronomical Society • Provided by theNASA Astrophysics Data System ■09 I A5 IA B1 IB G8 IA B9 IB A2 IA Ml IB BO IA Bl IAB K1 IB B0.5 IB AO IA' B3 IA BO IA B8 IA BO.5 IB A7 IB BO IB B1 IB A2 IB B8 IA* B1 IA BO.5 IA B3 IA B1 IA B5 IA BO IA B9 IA+P B3 IB BO IB M2 IAB B1.5 IB B1.5 IA BO.5 IB MO IAB M2 IAB BO IB 09 I-II 81 IA+ B5 IA M2 IA 09 I A3 IA BO.5 IB BO.5 IA B5 IA F6 IB F2 IB B8 IA B5 IB BO.5 IAB 81.5 IB 83 IB B9 IB 83 IB BO.5 I BO.5 IA B1 IB BO.5 IA B3 IA Bl IB BO.5 IA B8 IAB Bl IA BO IAE F9 IB F3E ‘IB Q= 12.7 11.6 10.4 10.0 12.7 12.2 12.0 11.2 16.8 15.0 15.0 14.6 14.5 14.2 14.0 12.6 41.0 26.9 25.1 20.0 16,8 15.4 29.7 27.2 26.9 25.6 23.5 21.9 17.8 17.3 17.2 16.9 16.8 15.1 38.6 37.8 37.5 37.2 34.0 30.7 28.2 28.0 26.0 23.7 20.1 17.7 17.6 17.6 17.5 36.3 19.7 19.2 18.8 18.3 18.3 18.0 38.7 9.4 7.2 9.1 7.1 5.6 8.9 8.0 1.9 1.5 3 .9 (1+a^) “10.1 aiR -1.0 -3.2 -1.6 -1.0 -1.7 -2.6 -1.0 -5.0 -1.6 26.7 -3.0 -4.4 -1.3 -1.4 -2.0 -2.0 -2.3 -5.2 -1.2 -3.7 -1.2 -2.4 -5.0 -2.5 -1.7 -1.8 -2.4 -1.8 -7.6 -1.2 -1.0 -1.9 12.6 -.0 -.9 -.7 -.4 -.5 -.2 -.2 -.9 -.9 -.1 -.5 -.4 3.3 -.9 -.6 2.2 -.7 B -.8 2.2 1.5 -.8 -.8 4.5 1.3 1.6 5.1 1.5 .6 .7 .3 .3 .2 .7 KINEMATICS OFSUPERGIANTS 11.12 10.97 1Ó.31 6.49 7.40 7.17 5.38 6.86 6.29 7.42 9.31 8.89 7.48 7.30 6.94 5.69 7.87 3.85 8.29 5.84 6.65 7.87 6.73 7.94 7.20 6.43 6.10 8.90 8.30 9.52 9.61 8.23 8.41 8.29 8.09 9.97 8.24 6.92 4.65 9.55 9.81 9.32 9.47 9.86 6.61 7.41 9.22 3.97 9.71 8.92 9.18 7.50 9.81 8.36 9.44 8.61 9.29 8.60 6.36 8.74 8.23 8.48 8.38 8.22 8.78 8.23 8.14 V B-V 2.03 2.03 2.18 1.09 Table I.Thecatalogueofsupergiants. 3.14 1.46 1.60 2.29 2.60 1.03 1.15 1.39 1.01 1.25 3.23 1.06 1.50 1.02 1.08 1.62 .12 .56 .75 .87 .26 .14 .96 .59 .07 .23 .37 .01 .79 .24 .27 .46 .23 .47 .36 .85 .59 .66 .94 .63 .02 .80 .33 .27 .36 .50 .52 .42 .92 .59 .80 .92 .50 .59 .34 .83 .80 .75 .70 .79 3.02 2.61 2.73 3.09 2.63 3.02 7.08 2.43 2.73 6.08 2.63 2.36 2.61 2.57 2.87 1.29 1.08 1.50 1.34 2.81 1.45 1.12 4.23 2,05 1.72 1.32 4.55 2.78 7,94 7.69 6,00 4.04 4.09 4,41 9,59 1.45 2.24 2.22 3.77 2,03 3.45 2.37 1.79 2.87 8.91 3.61 2.04 1.28 1.79 1.08 5.52 1,48 1.65 1,85 1.02 1.23 1.96 1,98 1.28 1.68 • 26 .44 .73 .95 7.07 7.44 7.37 7.46 7.61 7.30 3.93 7.27 7.05 9.75 7.46 8.73 8.68 8.57 7.75 7.25 8.94 8.52 8.88 7.55 7.33 8.34 8.71 6.09 8.31 4.67 4.69 7.40 8.97 8.62 9.25 9.37 6.29 5.31 4.32 6.57 3.30 6.81 7.79 8.44 8.31 8.04 a) 7.93 9.65 6.90 6.85 6.32 8.63 6.04 8.10 8.26 9.27 6.65 8.34 9.04 8.17 8.31 8.17 8.83 8.23 8.79 8.45 1 1 1 1 1 1 1 1 1 1 1 1 -15.5 -27.7 1 -13.0 -12.0 -30.0 -15.0 1 -28.3 -18.5 -36.0 -15.2 and where Visthestar’sexpected radialvelocitycorrected 1 -6.3 -6,0 -9.2 -1.6 -7.4 27.3 -7.4 -4,0 -4.0 -1.0 15.0 -9.2 11.5 Vel. Vmod.Assoc,orclusterSp.Phot. 23.0 27.0 30.0 12.8 41.9 55.8 -4.0 -1.0 -4,4* 67.8 36.lj 47.7 -6.0 -1.7 36.6 37.1 31.0 43.9 38.9, 33.8 32.0 30.6, 12.4 13.0 T 7.7 6.0 5.0 3.0 .0 • 7 -6.2 -1.9 -6.6 -4.9 -3.9 -5.1 -9.7 -1.2 83.8 48.6 39.6 -2.6 14.0 26.9 37.2 10.9 31.9 17,1 10.9 4.7 -.0 6.7 8.3 9.0 6.4 3.5 1.4 .7 V= sinlcosb—6osin /cosb,(2) l+atR* SGR 0B5 SGR 0S4Ï SGR OBI SGR OBI SGR 081 SGR 0B5 SGR 0B7 SGR OBI SGR OBI SGR OBI SGR OBI SER OBINGC6618 SGR 0B4 SGR 0B4 SER OBI SGR 0B4 SGR 0B4 SER OBI SER OBI SER OBI SCI 0B3 SCT 0B3 SER OBINGC6618 SER OBI SER 0B2 SER 082 SCT 083 SCT 0B3 —atRo NGC 6514 NGC 6603 NGC 6603 CDU 359 IC 4756S 36/74 45/66 8/11 66/44 Sources ofinformation 68 66 66 44 66 44 44 66 66 66 66 66 37 66 66 44 66 66 66 66 51 44 66 13 74 45 44 66 66 66 66 56 66 66 45 45 66 66 45 66 45 64 66 66 68 66 66 45 74 45 45 66 66 83 66 66 83 83 83 11 44/45 45/74 44/ 45 29/52 2/32 44 44 44 51 44 44 95 44 48 51 95 51 48 51 51 44 18 44 44 44 44 44 51 51 51 18 44 44 44 44 18 45 74 45 74 44 44 45 44 45 51 44 32 45 45 74 51 45 45 44 83 44 83 44 51 63 51 83 18 27>37/98 39/98 37/98 38/98 37/38/98 25/98 37/98 27/38/98 73/79/98 73/74/98 37/74 39/73/98 37/98 37#98 27/98 37/73/98 Vel. 98 98 98 98 98 98 98 98 27 98 98 98 98 98 98 98 98 98 98 98 98 98 74 98 98 74 73 98 98 73 98 99 98 98 74 73 603 1970AJ 75. . 602H the constantsbecome sun, andaiaareconstants. WithOort’sconstants for thesolarmotion,danddo arethecircularvelocities of Galacticrotation,AandB, definedintheusualway, the distancesfromGalactic centerofthestarand of Galacticrotationatthestar andsun,Rare 2 0 604 HD 194012 HD 185859 HD 190323 HD 183143 HD 185622 +13 4091 HO 231195 HO 182296 +11 3946 HD 187203 +14 3763 +10 3872 HD 186841 HD 174104 HD 190405 +28 3434 HD 332757 HD 192713 HD 187982-3 +24 3902 HD 191877 HD 187299 HD 190066 HD 186745-6 +23 3745 HD 187238 HD 184943 +12 3927 +8 4122 HD 187399 +27 3550 OB 2789 +23 3730 +11 3707 +31 3921 HD 333251 □B 28100 +28 3487 +36 4063 HD 192422 HD 195324 HD 229059 +36 4000 HD 227634 HD 191243 HD 226868 HD 190603 HD 194280 HD 195593 HD 194153 HD 190446 HD 193183 +36 4048 HD 196093-4 HD 229214 +35 4077 HD 193370 HD 190918F HD 190918A HD 190919 HD 190113 +29 3774 HD 192660 KY CYG HD 229238 HD 193469 V717 CVG © American Astronomical Society • Provided by theNASA Astrophysics Data System Star Sp.type GOIA-IAB GO IB F5 IA B1 IB B1 IB G3 IB G5IAB-IB K3IAB-IB GO IB B7 IA MOIAB-IB A2 IA M2 IA BO.5 IA Bl IAB BO IB 85 IB B1 IB Bl IA BO.5 IB Bl IBP G2 IB Al IAB Bl IB Bl IAB B1 IA B8 IB BO.5 IB B9 IB F2 IB F8 IB B7 IA B2 IB B9 IA B8 IA+F5 K2 IB+B □9.5 IB BO.5 IB BO IB A1 IB BO.5 IA M3 IAB 09.5I+WR G5 IB B5 IB B1.5 IA Bl IB M2 IAB F5 IB BO.5 IB B2 IB Bl IAB F6 IB Bl.5 IB B1.5 IAP Bl IB Bl IB BO IB M3 IA F5 IB F5 IAB F5 IB BO IB Bl IB BO IA BO IB BO.5 IB 47.6 49.0 48.4 45.9 45.1 61.5 60.7 60.4 58.4 56.6 54.7 53.2 53.1 50.9 49.4 49.1 44.3 44.2 63.9 63.5 61.6 61.6 60.2 59.7 56.8 65.0 64.7 61.9 59.5 59.5 59.1 57.1 75.3 72.6 71.7 65.9 65.3 64.2 75.9 75.8 75.4 75.3 74.2 72.6 71.3 69.5 65.5 65.0 76.7 76.2 75.9 75.9 75.7 73.4 72.6 72.6 72.1 69.4 67.9 67.2 77.4 77.2 77.0 76.4 76.4 76.2 76.9 -12.7 -8.6 -5.3 -3.2 -4.6 -1.0 -2.7 -4.1 -7.5 -2.5 -1.7 -4.8 -1.0 -6.4 -7.3 -6.4 13.7 -1.4 -1.5 -2.9 4.0 -.3 -.3 -.7 -.3 2.7 3.1 -.2 1.4 1.6 -.3 -.0 -.5 -.6 -.4 1.5 4.9 -.5 2.0 2.0 3.1 3.1 2.4 2.1 2.1 2.6 1.5 B 1.5 1.9 1.0 1.4 1.7 .6 .3 • 0 .3 .6 .7 .4 • 4 .4 .6 .3 .9 .2 .6 10.55 10.67 10.24 10.41 10.57 10.46 10.10 1Ó.57 • 6.80 9.86 6.49 7.70 7.70 6.86 6.18 6.84 6.87 6.37 9.36 6.43* 7.10 6.24 7.12 6.48 7.85 7,03 9.27 8.40 5.56 9.00 8.73 8.20 9.71 9.99 8.31 5.17 9.66 9.63 7.93 6.09 9.93 6.92 8.50 4.63 9.54 9.77 7.36 7.33 7.91 5.63 8.94 6.30 6.19 l.n 5.91 8.70 5.20 8.89 8.70 9.80 8.38 7.54 8.22 7.01 8.39 8.88 8.53 V B-V 2.09 -.03 3.10 1.24 1.60 1.04 4.767.38 3.64 3.02 2.73 1.04 1.14 1.90 1.01 1.06 1.27 1.53 1.61 1.46 .40 .43 .96 .56 .88 .25 .71 2.00 .51 .84 .12 .79 .93 .99 .66 .48 .20 .39 .71 .18 .22 .51 .98 .82 .81 .85 .46 .81 .56 .18 .57 .47 .50 .70 .23 .23 .14 .16 .55 .93 .63 .44 .65 .76 .90 R. M.HUMPHREYS 9.12 6.28 6.40 4.31 6.76 5.30 3,82 7.99 9,08 2.30 2.19 9.09 1.43 1.54 1.07 1.43 1.03 1.14 3.87 2.11 1.41 1.98 1.92 1.78 4.81 4.57 5.57 3.91 3.13 2.00 3.72 2.79 3.94 1.06 1.88 3.02 3.13 2.17 2.96 2.63 2.06 1.76 2,20 2.20 1.59 1.82 1.51 1.35 1.44 1.47 1.10 1.63 1.85 1.04 1.61 1.68 1.36 1.66 Table I{continued) .66 .83 .39 .62 .94 10.13 7.08 9.42 9.36 7.59 7.39 7.66 9.29 9.24 9.33 9.41 9.06 9.13 9.30 8.18 8.25 9.25 9.19 9.20 9.25 9.07 9.72 9.19 9.13 9.10 9.16 9.11 9.02 9.55 9.73 9.72 9.75 9.75 9.74 9.13 9.77 9.76 9.76 9.83 9.79 9.91 9.67 9.84 9.55 9.62 9.57 9.69 9.38 9.45 9.77 9/75 9.76 9.83 9.77 9.69 9.58 9.58 9.57 9.62 9.33 R Vel.Vmod.Assoc,orclusterSp.Phot. rotation constants(Trans,I. A- U.1964a).Thesemodel (2) usingtherecommended valuesoftheGalactic 1 1 1 1 1 1 1 2 1 1 -84.2 -14.0 2 1 "17.6 -14.O -22.8 -18.0 -18.9 -18.0 -11.7 -23.O -18.0 -9.9 -22.2 -2A.0 -14.3 -21.8 -13.3 -13.0 2 2 1 52 The modelradialvelocities are computedfromEq. -3.6 -4,9 61.3 32.8 40.7 25.0 27.6 -2.5 -3.9 21.0 50.6 -2.9 12.6 -4.3 -13.9 -3.3 -1.7 -1.1 7.4 20.9 7.7 15.8 -1.7 -10.1 -5,5* -8,7 -6.2 17.0 21.1 34.0 % 2.9 6.4 2.0 *i 2.6 3.8 1.0 8.8 6.2 1.1 9.2 .2 7.6 -21.5 -12.5 -3.6 -1.7 47.1 -1.2 50.4 41.6 58.0 47.5 33.3 -1.7 -9.4 -5.5 -4.1 -5.1 -5.0 -8.5 -5.1 7.1 2.1 4.8 7.9 5.5 3.6 2.7 1.3 VUL QBl VUL OBI VUL QBl VUL QBl VUL QBl VUL QBl VUL OBI VUL 0B4 VUL OBI CYG OBI CYG OBI CYG OBI CYG OBI CYG OBI CYG OBi CYG OBI CYG OBi: CYG 0B3 CYG QB3 CYG QB3 CYG 0B3 CYG 0B8 CYG OBI CYG OBI CYG OBI CYG OBI CYG 0B3 CYG 0B3 CYG QB3 2 a=-A/(BR). ' 20 NGC 6823 NGC 6913* NGC 6913 NGC 6913 NGC 6871 NGC 6871 NGC 6871: NGC 6871 NGC 6871 66,68 73.74 44,45 66.74 11,68 Sources ofinformation 74 73 22 66 60 44 74 74 44 60 44 41 51 12 66 66 66 66 11 11 66 66 68 66 66 45 74 83 12 46 44 66 66 66 66 41 74 44 66 12 66 66 56 66 66 66 66 66 66 66 69 66 66 60 11 76 83 83 83 12 11 12 44,45 44.62 44/62 44,45 48.62 74 74 45 44 74 45 44 2 51 2 44 44 44 44 44 2 44 51 18 44 44 45 44 52 83 44 46 44 44 51 74 51 44 44 2 32 62 44 52 44 44 44 74 44 83 83 33 51 83 18 18 18 18 18 18 18 18 18 73,74 73,74 73,74. 51/98 73,74 79,98 79,98 79,98 98 74 73 73 74 74 98 98 98 98 98 51 98 98 98 74 79 41 98 98 98 98 51 74 98 98 74 74 98 74 79 79 98 79 98 98 98 98 98 41 98 98 1970AJ 75. . 602H velocities weredeterminedfor thosesupergiantswith further inSec.VI. Schmidt model.Themodel velocitiesarediscussed are essentiallyidenticalwith velocitiesfromthe1965 distances andobservedvelocities ofgoodqualityand HD 235781 HD 199478 HD 202124 HD 204172 ANON J/M 12 HD 194839 HD 192832 HD 194279 HD 228928 HD- 228882 HD 213470 HO 216206 HD 239895 HD 212312 HD 212455 HD 239686 HD 206165 HD 235783 HD 207673 HD 201065 HD 207489 +45 3406 HD 200102 HD 200905 HD 198478 SIGMA CYG HD 195592 HD 191781 +41 3804 HD 216946 HD 239923 HD 208606 HD 210745 +54 2764 HD 239828 HD 206501 HD 212593 HD 210809 HD 209900 HD 213310*1 HÖ 235479 HO 209678 HD 202380 HD 205196 HD 203338-9 HD 207329 +4« 3437 HD 205349 HD 204710 ALPHA CYG HD 194057 HD 193426 HD 210221 HD 205114-5 GAMMA CYG HD 2287X2 HD 193946 HD 229X08 HD 197460 HD 229X59 +47 3421 HD 228929 +38 4098 Each supergiantwasalso checkedforpossible RW CEP NU CEP MU CEP Star © American Astronomical Society • Provided by theNASA Astrophysics Data System K3 IB G1 IB □9.5 IA B5 IA+ B2 IB □9.5 IB K5 IB A2 IA BO.5 IA B5 IA B1.5 IA K5 IB G4 IB G8 IB MO IA-0 K1 IB B9 IAB B2 IB M2 IA M1EPIB+B K1 IB A2 IB F5- IB B5 IAB B8 IA B3 IA B9 IAB BO IB BO IBP □9.5 IA B1 IB BO.5 IA A3 IA B3 IB B8 IA B5 IA B5 IAB A2 IA B1 IB B6 16 B8 IB 09 IB MOIAB+B M3 IB BO IB B1.5 IBE G2IB+A/B B1 IAB AO IAB B8 IB B1 IB F8 IB BO.5 IA B2 IB B9 *1A Sp.type B1 IB F2 IB A3 IB AO IB-11 52 IAP B2 I B9 IAB BO.5 IB B9 IB BO.5 IB BO.5 IB B1.5 IB 102.7 102.3 100.6 103.2 104.7 104.1 103.6 103.1 103.0 102.9 102.8 102.3 101.7 101.2 104.6 104.4 103.0 102.6 100.4 79.2 80.1 78.7 87.3 79.5 78.2 78.1 99.9 87.5 86.4 85.9 83.4 82.4 81.2 80.1 78.1 78.1 77.7 77.5 77.4 99.9 99.8 99.7 99.7 99.3 98.6 98.2 96.6 95.2 93.6 91.8 90.8 89.9 87.8 87.5 85.8 84.3 84.2 81.9 80.5 77.6 77.4 77.4 77.4 99.5 98.7 89.7 88.3 -11.2 -10.0 -6.9 -1.0 -2.1 -l.l -1.4 -2.5 -3.1 -9.8 -2.7 -7.7 -1.7 -1.9 -6.7 -1.7 -8.6 -l.B -l.l -2.1 -2.1 -4.3 -4.5 -3.6 -9.0 -1.7 -2.1 B 4.1 2.5 2.6 7.2 4.3 -.1 -.5 2.0 2.9 6.6 4.4 4.5 2.0 2.6 -.5 5.9 -.3 6.4- 3.1 5.5 3.4 1.4- 1.5 1.2 1.9 2.1 8.0 1.9 1.7 1.2 1.7 1.6 1.0 1.7 1.4 .8 • 8 • 8 .2 .9 KINEMATICS OFSUPERGIANTS 11.51 10.84 4.74 9.69 7.87 4.30 4.02 7.20 9.52 7.80 4.84 4.25 9.54 7.49 8.62 7.02 6.65 4.97 6.23 6.20 9.34 4.37 6.46 5.69 6.62 3.71 5.94 7.08 9.87 9.21 8.89 8.60 3.35 8.63 9.54 8.43 8.84 8.68 8.59 5.62 4.55 7.55 6.14 6.62 7.60 9.54 6.95 7.59 7.51 2.21 9.48 8.71 7.40 5.66 6.17 6.26 1.25 8.65 8.92 9.63 8.96 8.00 8,86 8.42 8.69 8.14 8.54 B-V 1.15 3.18 -.06 2.38 2.39 1.29 1.68 1.53 1.02 1.68 1.81 1.06 1.15 1 à13 1.80 1.16 1.58 1.02 1.35 1.84 1.00 1.349.79 .89 .87 .97 .89 .85 .30 .17 .43 .59 .46 .22 .40 .09 .11 .64 .56 .83 .28 .77 .92 .38 .50 .74 .09 .05 .39 .41 .86 .34 .45 .35 .57 .89 .58 .26 .67 .92 • 81 .43 .29 .16 3.39 2.73 4.39 2.81 3.33 2.52 3,28 4.53 3.56 3.56 2.51 2,59 2.49 2,17 5.60 3.52 3.*!7 6.52 2.32 5.62 7.69 5.62 1.01 1.20 1.11 2.28 3.30 2.17 1.67 1.31 1.03 1.91 1.05 1.23 1.92 1.84 1.12 1.52 1.84 1.97 1.41 1.37 10.29-14.0-22.1 1.19 1.68 1.29 .99 .39 .53 .90 .63 .58 ,66 .99 .19 .58 .20 10.05-18.4,-13.7 • 94 ,68 10.13-14*5,-17.6 .54 Table I{continued) 10.09 10.75 10.31 11.20 11.33 10.15 11.25 10.07 10.13 10.26 10.04 10.90 10.16 12.51 10.61 11.86 11.31 10.33 11.70 10.12 10.34 11.04 12.80 12.80 11.26 10.14 10.20 11.04 10.52 11.77 10.02 10.22 10.20 9.88 9.86 9.94 9.85 9.81 9.98 9.98 9.96 9.95 9.95 9.92 9.91 9.87 9.89 9.79 9.77 9.99 9.96 9.80 9.78 9.76 9.77 9.78 1 1 1 1 1 1 1 2 1 1 membership inclustersandstellar associationsbyusing /. A.U.(1964b). et at.1958)andthelistgiven intheTransactionsof the CatalogueofStarClusters andAssociations(Alter in thecatalogue: 1 2 -19.7 -28.0 -13.0 -12.5 -16.0 -15.2 -30.3 -12.3 -40.0 -54.0 -57.O -58.7 -20.8 -13.2 -21.6 -57.6 -43.0 -13.0, -60.8 -32.O -51.3 -61.9 -78.8 -55.1 -66.5 -15.0 -78.3 -20.6 -16.0 -24.2 -31.0 -10.2 -25.8 -25.5 -58.5 -59.0 -14*5 -19.7. -23.2 -23.0 -19.O -4.1 -9.4 -2.3 -7.2 -4.6 -9.5 -7.5 -15.7 -4.1 -5.2 54.0¡ 19.3 Vei. Vmod.Assoc,orcluster 2.8 The followingisabriefdescription ofthecolumnsin -17.5 -47.7 -22.4 -16.7 -44.6 -60.2 -45.9 -17.0 -73.5 -46.9 -21.5 -40.9 -14.6 -15.0 -14.8 -13.3 -36.2 -15.0 -18.4 -28.4 -19.7 -14.7 -15.4 -20.7 -18.0 -22.5 -15.1 -32.5 •19.4 -41.3 CEPOBI •18.2 -9,3 CYG 0B2 CYG 0B8 CYG 0B9 CYG 0B9 CYG OBB CYG 0B4 CYG 0B2 CYG DBSCOLL419 CYG QB8 CYG 0B9 CEP OBI CEP OBINGC7235* CEP OBI CEP 0B2 CEP 0B2 CEP OBI CEP OBI CEP 0B2 CYG 0B7î CYG QB7 CYG 0B7 CYG 0B2 CYG QB9 CEP OBI CEP 0B2 CEP OBIIC1434.' CEP 0B2 CYG 0B7 CYG QB7: CYG 0B8 CYG OBI CYG OBI CYG OBI CEP OBI CEP OBI CEP 0B2 CEP 0B2 NGC 6910 COLL 419.* NGC 7235 NGC 7245 NGC 6991 Sp. Sources ofinformation 66 56 66 66 66 66 66 66 56 66 66 66 68 66 68 66 66 66 66 68 66 66 66 68 44 68 66 43 66 66 60 44 66 66 66 66 66 66 66 66 58 68 44 66 66 66 66 66 66 66 66 9 66 44 66 66 68 66 85 66 66 11 12 12 13 11 12 44/46 44/46 44/46 52/62 48/52 4,44 32/52 Phot. ‘48 44 44 44 44 44 44 44 44 44 21 51 44 44 44 44 44 48 44 44 44 44 44 44 21 2 18 18 44 44 52 44 44 44 44 51 44 18 18 18 18 44 51 44 18 18 51 51 18 18 18 18 18 18 79/98 79/98 72/79 79/98 1/79 1/79 1/79/98 1/98 1/72 1/79 Vel. 1/98 79 98 98 98 79 79 98 98 98 98 98 98 98 79 79 98 79 98 98 65 98 79 98 98 98 98 98 98 98 98 98 98 98 98 98 1 1 1 1 605 1970AJ 75. . 602H 606 Col. 1.Starname;HDnumber orotherdesignation. HD 211971 HD 209973 HD 217490 HD 217476 HD 218915 HD 216411 CASE 78 HD 215806 CASE 75 +61 2352 HD 216927 HD 213087 HD 219287 +59 2735 +60 2532 +37 2750 +61 2472 HD 240256 CASE 81 HD 240250 CASE 80 +63 1907 HD 220770 HD 219978 PSI AND HD 224165 +60 2542 +62 2210 +61 2509 +60 2615 +60 2582 +61 2529 TZ CAS +61 2526 HD 223385 +63 12 HD 225094 HD 224055 HD 224424 HD 223960 +62 2296 KAPPA CAS +60 51 HD 611 +62 2313 HD 223987 HD 3283 +63 61 HD 2928 HD 225146 HD 221861 +61 2575 +63 2073 HD 3940 +61 153 +60 73 +64 76 +63 70 HD 4362 +63 89 U LAC VV CEP W CEP RHO CAS KN CAS PZ CAS MZ CAS © American Astronomical Society • Provided by theNASA Astrophysics Data System Star 1 n 4. Galacticlatitude,b. 3. Galacticlongitude,/. 5. Apparentvisualmagnitude, F. 2. Spectraltypeandluminosity class. M2IA-IAB M4 IAB+B. KOEPIA+B A2 IB □9.5 IB M2 IB Ml IA BO.5 IA GO IA □9.5 IA B1 IA 89 IA 80 IB M3IA-1AB G5 IB M2 IAB BO IA B5 IB BO.5 IB B5 IB M2 IAB B9 IAB B1 IA K5 IB B8 IB G8 IB A2 IB A5 IB BO IB F7 IB B9 IA M2 IAB M3 IA BO.5 IB B8 IAB BO.5 IB 09 IB M1EPIB+B AO IA+ A3 IA+ B3 IA 61 IB B2 IB- F 8PIA A2 IB M2 IAB GO IB KO IAB AO IAB B3 IA MO IB B3 IA Bl IAB B1 IB A1 IA AO IB B1 IB A3 IB B1 IAB B1 IA BO IBP B3 IB Sp. typeL F5 IA BO IB GO IB B1 IB B1 IB 104.9 105.8 105.1 104.9 107.1 105.9 105.5 109.3 108.5 108,0 107.9 110.8 109.3 108.5 108.1 108.1 111.1 110.9 112.3 111.5 111.4 111.3 112.7 112.6 112.3 111.7 112.9 112.9 113.2 113.0 112.8 115.r 113.8 115.2 115.1 115.9 115.9 115.8 115.6 115.5 115.3 118.8 118.2 117.6 116.2 116.2 116.0 119.9 119.2 118.0 116.9 116.7 116.3 117.2 116.9 116.3 121.2 120.8 120.8 122.0 121.9 121.8 120.9 122.3 122.2 121.1 122.2 -14.4 -15.0 -6.9 -3.4 -2.7 -1.2 -1.4 -3.2 -1.1 -4.5 -2.5 -1.2 -1.3 -2.7 -1.7 -1.2 -1.4 -2.5 -3.3 -.4 -.7 2.6 7.0 5.4 -.3 -.7 -.7 2.7 6.4 4.4 -.4 -.1 -.9 2.4 L.9 -.2 -.6 1.7 -.1 -.5 9.7 -.3 1.2 -.3 1.2 -.6 1.6 1.3 1.6 1.2 2.1 1.2 2.4 1.4 1.5 .0 .6 .7 • 4 • 1 .2 .3 .0 .1 .2 • 4 .1 10.76 10.67 10.01 1Ó.26 6.89 4.90 5.11 9.00 7.30 7.18 7.19 5.02 9.20 4.96 9.72 9.09 8,73 5.49 9.92 8.91 8.31 6.77 9.64 9.57 9.89 8.81 7.82 8.33 8.87 6.03 8.78 8.42 9.10 4.59 9.23 8.42 8.65 9.76 6.24 7.54 6.93 5.48 8.65 8.60 9.17 9.51 7.16 8.09 8.65 8.77 4.16 9.23 9.65 8.20 5.84 7.33 9.64 8.61 9.10 8.60 8.48 8.82 6.38 9.50 9.33 9.17 5.80 V B-V 2.80 3.18 1.75 2.60 2.70 1.34 2.27 2.68 1.02 1.43 1.14 1.12 2.69 1.16 1.15 1.09 1.18 2.51 2.45 1.26 2.25 1.09 1.66 1.14 1.80 1.07 1.09 .99 .09 .02 .60 .42 .80 .86 .37 .85 R. M.HUMPHREYS .34 .65 .65 .77 .46 .60 .75 .53 .66 .39 .55 .73 .51 .70 .32 .70 • 62 .38 .49 .91 .14 .62 .73 .84 .57 .26 .59 .72 .60 <1.30 4.07 2.61 2.49 3.05 3.85 3.63 4.63 3.08 2.61 1.66 1.85 2.10 4.04 2.94 1.67 3.66 1.77 2.49 2.56 1.68 2.50 2.82 3.65 1.91 3.09 1,34 2.78 2.25 2.63 3.56 1.04 2.15 4.49 4.53 2,81 4.74 3.19 2.94 4.37 3.36 1.49 Table I{continued) 3.09 8.24 1.94 3.21 2.56 3,93 3.10 1.89 1.69 3.12 2.51 1.94 3.53 1.03 • 65 .97 .73 .67 ,70 .89 .95 .87 10.19 10.41 10.29 11.07 10.72 11.08 11.79 11.67 10.26 10.63 11.32 11.73 10.76 10.67 11.47 11.20 10.26 10.97 11.41 12.46 10.29 11.88 12.09 10.88 10.76 10.59 11.24 10.45 11.21 11.29 11.48 11.95 11.66 11.16 11.39 11.98 10.72 10.85 11.51 11.49 11.92 11.72 12.81 11.16 10.47 11.00 12.63 10.48 13.08 11.01 11.74 15.57 12.58 11.87- 11.00 12.49 10.57 11.90 11.96 12.01 11.56 11.52 10.49 12.25 2 1 1 1 1 2 1 1 2 -68.0* -17.0, -17.3 -18.7 -23.9 -12.8 -20.5 -72.0 -44,0 -44.0 -32.5 -61.8 -54.9 -24.8 -42.0 -30.1 -55,0 -38.7 -58.0 -14.7, -18.6 -58.3' -27.8CEP0B5 -81.7 -45.6 -54.0 -67.9 -60.7 -47.3 -29.7 -17.7 -76.5 -55.1 -64.0 -60.2 -45.0 -30.2 -45.6 -45.5 -52.1 -44.9 -33.0 -26.8 -59.4 -49.0 -64.2 -56.0 -16.5 -47.2 -47.4 -87.3 -43.0 -36.9 -70.5 -33.3 -48.1 -67.7 -42.3 -33.7 -48.0 -51.7 -33.4 -49.4 -14.9 -18.6 Vel. Vmod.Assoc,orclusterSp.Phot. -2.3 -19.4 -2.8 -21.5 -8.5 -21.0 10. Modelradialvelocity: For comparisonwith 9. Radialvelocityofthestar. 8. DistancefromtheGalactic center,R. 6. ObservedFcolor. 7. Distancefromthesun,r. CEP DB2 CEP 0B2 CEP 0B2 CEP OBI CEP OBI CEP OBI CEP OBI CEP 0B5* CEP OBI CEP OBI CEP OBI CAS 0B2 CAS 0B2 CAS 0B2 CAS 0B2 CAS 0B2 CAS 0B2 CAS 0B2 CAS 0B2! CAS 0B2 CAS 0B2 CAS 0B5 CAS 0B2 CAS 0B5 CAS 0B5: CAS 0B5 CAS 0B5 CAS 0B5 CAS DBS CAS 0B5 CAS QB5 CAS 0B5 CAS 0B14NGC'146 CAS 0B4NGC103 CAS 0B4 CAS 0B4i CAS 0B5 CAS 0B5 CAS 0B5 CAS 085 CAS 0B4 CAS 0B4Î CAS 0B5 CAS 0B5 CAS 0B7 CAS 0B7 CAS 0B4« CAS OB14 CAS 0B5 CAS 0B7 CAS 0B4 CAS 0B7 NGC 7380 NGC 7510 NGC 7654: NGC 7654 NGC 7654» COLL 458 COLL 458 8/11*68 13,14 50/83 50/83 13/50 12/50 44/66 69/72 9/50 58/50 11/43 Sources ofinformation . 44 66 9 66 66 59 66 66 66 51 66 44 83 83 66 66 66 60 60 44 51 66 48 66 66 66 66 66 66 66 50 44 44 66 66 66 46 66 66 66 66 66 50 66 60 66 66 15 66 66 50 66 66 51 11 11 44/46 51/83 51/83 21/62 4/44 16/51 44/56 4/44 62/48 44 52 44 44 44 44 44 83 18 44 44 83 48 44 44 18 51 51 44 51 18 44 44 44 44 51 44 44 18 18 46 51 44 52 44 44 51 51 44 44 44 44 48 44 44 44 44 44 62 51 44 18 18 18 18 72/79 79/98 79/98 Vel. 98 98 98 98 98 50 50 79 98 98 79 79 98 50 79 50 50 50 98 98 50 98 98 50 98 50 50 98 79 98. 72 98 98 15 98 1970AJ 75. . 602H velocity hasbeencorrected forthestandardsolar motion. may belong. the star’sobservedradialvelocity, themodelradial HD 4694 HD 4817 HD 4768 CASE 23 HD 4717 HD 5551 HD 4841 HD 5776 HD 5552 HD 6474 HD 6182 HD 7103 +61 220 HD 8065 +62 246 HD 7902 HD 236697 +63 180 HD 8906 HD 9105 HD 236740 HD 9311 +59 274 HD 9250 HD 11092 HD 10125 +62 297 HD 9973 HD 9366 HD 10362 HD 10494 +60 339 +60 331 HD 10063 HD 10756 +60 335 +60 333 +60 336 ES 1181 HD 236871 HD 14010 HD 11831 +55 388 HD 13476 HD 13402 HD 12953 HD 13256 HD 236947 HD 236915 HD 12301 HD 10898 HD 13658 +59 420 HD 13686 +59 372 +59 367 HD 13267 HD 13744 HD 14242 +57 530A HS CAS PHI CAS AZ CAS XX PER WX CAS Star KK PER T PER © American Astronomical Society • Provided by theNASA Astrophysics Data System 11. Stellarassociationorcluster towhichthestar 12. Referencesforthespectral typeandluminosity Sp. type AO IB K5 IB Ml IAB B3 IA B5 IB AO IB B1.5 IB B5 IA Bl IBP B1 IA M4 IA GO IA B9 IAB B5 IA FO IA M2 IB AO IA B3 IB B7 IB B5 IAB B6 IB 09.5 IB MOIAB-IB GO IB B3 IA K5IAB-IB B5 IB F3 IB K3 IB Bl IB M IB+BE F5 IAB B5 IB M IB M3IAB-IB M3IAB-IB B8 IAB B5 IAB 68 IAB B9 IAB F5 IA M2 IB B8 IA B6 IAB M2IAB-IB B9 IA K3 IB M2IAB-IB M4 IB+B K5I +A A1 IA M2 IAB K5 MOIB A2 IA M2 IAB Ml IAB A3 IAB Bl IA 09.5 IB B8 IB B2 IB BO.5 IB MOIAB-IB AO IAB B5 IA M2 IAB M2 IAB 122.8 122.8 122.9 122.8 122.8 122.9 124.6 123.7 123.7 124.6 124.4 123.9 126.5 125.4 125.2 124.8 126.7 126.7 127.6 127.4 126.7 126.6 128.0 127.5 127.3 128.7 128.3 128.0 128.7 128.3 129.1 128.9 128.7 129.2 129.1 129.5 129.4 129.4 129.4 129.5 130.1 129.8 129.7 129.7 132.2 131.1 130.4 132.6 132.5 131.4 131.1 130.6 130.4 133.1 132.9 131.9 131.3 133.1 133.7 133.5 133.5 133.1 133.9 133.9 133.5 134.2 134.1 -1.1 -3.2 -1.0 -4.4 -4.4 -4.5 16.0 -1.8 -2.5 -2.3 -1.8 -1.3 -7.8 -6.4 -1.2 -1.8 -1.5 -5.6 -2.9 -2.6 -2.5 -1.5 -1.3 -1.4 -3.6 -4.7 -2.9 -2.6 -1.7 -6.2 -1.1 -2.0 -2.0 -2.8 -3.6 -2.5 B -.9 -.1 1.9 1.7 -.9 1.0 6.6 1.3 1.1 -.6 -.4 1.3 1.8 -.9 -.9 -.9 -.7 -.6 2.6 3.1 1.6 • 4 .9 .9 • 8 .2 .2 .8 KINEMATICS OFSUPERGIANTS 10.72 10.01 6.07 7.57 6.86 8.80 8.50 6.23 7.71 7.62 9.08 9.68 9.64 8.23 8.05 4.98 7.47 6.97 8.35 7.30 7.90 8.74 8.65 7.15 7.11 9,14 6.54 9.50. 6.86 8.22 9.29 7.20 6.34 9.91 7.30 9.16 9.09 7.54 8.91 9.97 7.39 8.50 8.95 9.27 7.08 7.40 8.84 8.74 7.20 9.30 9.77 8.04 5.59 7.77 6.46 8.26 5.69 8.72 8.30 9.19 7.60 6.37 8.06 8.61 8.64 8.90 8.54 V B-V 2.77 2.50 1.74 2.16 1.59 2.05 1.04 2.04 2.17 1.71 2.34 2.27 2.52 1.23 2.17 2.20 2,7812.02-39.7, 2.08 2.28 1.97 2.26 2.31 1.20 2.42 2.42 1.47 2.29 .72 3,5012.25 .38 .19 .47 .52 .71 .62 .57 .53 .68 .92 .91 .41 .55 .46 .74 .30 .63 .86 .31 .00 .77 .85 .78 .25 .44 .66 .62 .60 .53 .86 .38 .30 .60 .33 .59 .74 2.32 3.75 2.34 6.49 2.67 2.36 2.21 3.78 6.37 2.94 1.05 3,89 3.48 2.52 2,39 2.56 1.55 2.31 Table I{continued) 3.80 3.08 1,66 2.87 2.14 1.18 2.87 2,28 4,21 13.07 2,23 11.53 4.41 3.84 12.77 1.25 3,31 3.65 4.07 4.43 2.83 3.09 3.28 4,19 3.21 3.39 2.92 2.95 4.53 2.15 2.23 2.69 2,00 2.61 3.15 2.22 2.29 2.87 2.52 1.75 11.27-36.3-28.8 1.55 2.57 1.83 .98 12.44 11.44 10.61 11.43 10.94 11.72 11.38 12.50 12.62 11.50 11.67 11.94 14.70 12.40 11.68 14.71 12.67 11.07 11.58 12.14 10.76 11.55 11.44 11.99 12.00 11.56 10.82 12.37 12.00 12.63 13.24 12.99 13.27 12.35 12.32 12.46 12.21 10.66 11.64 11.11 12.18 13.42 13.14 11.33 12.17 11.95 11.51 11.48 11.94 12.38 11.64 11.71 12.17 11.89 11.93 1 2 1 1 1 giants laterthanspectraltype B5andPopulationI by numberattheendof catalogue. indicated byanumericcode. Thereferencesarelisted class, theUBVphotometry, andtheradialvelocity, 2 1 Cepheids. -50.0 -21.2 -21.3 -34.8 -38.9 -26.0 -39.8 -46.0 -29.O -58.9 -50,2 -28.5 -75.3 -41.0 -42.3 -24.4 -41.0 -33.3 -39.2 -30.0 -54.0 -48.6 -19.0 -37.3 -38.7 -41.1 -58,1 -38.0 -41.8 -28.6 -39.5 -32.0] -47.8 -48.4 -20.0 -45.4 -55.3 -31.8 -48,4 -30.O -38.9 -59.7 - -25.0 -47.4 -40.5 -46,3 -?4,2 -45.9 -52.0 -41.8 -33.8 Vel. Vmod.Assoc,orclusterSp.Phot. -61.8 1 Buscombe (1969)hascompiled acatalogueofsuper- 3.0 -35.8 -46.2 -24.0 -39.6 -31.7 -35.0 -30.0 -34.7 -44.8 -46,0 -19.2 -35.0 -43.4 -40.0 -47.1 -35.8 -39.5 -38.9 -45.0 -51.2 -48.2 ■59.6 42.4 43.4 CAS OBI CAS 0B7 CAS DB7 CAS DB7 CAS 0B7 CAS 0B7 CAS OBI CAS OBI CAS OBI CAS 0B7 CAS 0B8 CAS 0B8 CAS 088 CAS 0B8 CAS 0B8 CAS 088 CAS 0B8 CAS 0B8 CAS QB8 CAS 0B8 CAS 0B8 CAS 0B8 CAS 0B8 CAS 0B8 CAS 0B8 PER OBI PER OBI PER OBI PER OBI PER OBI PER OBi: PER OBI PER OBI PER OBI* PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI NGC 457 NGC 457 NGC 457 NGC 581 NGC 581 NGC 654 NGC 663 NGC 663 NGC 663 NGC 663 NGC 663 13.50 56.66 12.50 50,83 6.50 6,50 6.50 57.66 13.50 13.50 13.50 Sources ofinformation 66 66 66 83 66 66 51 66 66 66 44 44 66 50 13 11 66 66 66 66 50 66 66 66 11 11 48 66 66 66 50 66 44 56 13 13 11 66 66 66 13 44 50 44 66 66 50 50 66 50 50 66 50 66 12 82 51,83 44,77 44,46 44,97 4,44 51,83 51,57,97 50 4,44 44 44 44 44 44 51 44 62 44 44 44 44 51 18 44 51 44 44 51 62 18 21 44 62 51 62 51 44 44 51 44 44 44 51 44 18 44 51 51 44 51 44 51 51 51 51 51 51 51 18 51 50 18 18 18 18 79.98 79.98 79,98 79,98 79,98 79,98 79,98 98 98 98 98 98 79 98 50 98 607 50 98 79 98 50 50 98 50 98 98 98 79 50 98 50 98 50 50 98 50 50 98 98 50 50 50 1970AJ 75. . 602H 608 later thanB5withluminosity classesbrighterthanlb All supergiantsoftypesB5 and earlierallofthose distances weredeterminedis showninFigs.1and2. HD 14433 HD 14443 HD 13866 HD 13841 HD 15316 HD 14818 HD 14580 HD 14535 HD 14542 HD 14404 HD 14143 HD 14052 HD 13854 HD 13659 HD 14662 HD 14899 HD 14489 HD 14826 HD 15785 HD 14322 +56 595 HD 14134 HD 15620 HD 15497 HD 17958 HD 17857 HD 14956 +60 493 ♦60 478 HD 18409 HD 16778 HD 15690 HD 16779 HD 16808 GP CAS HD 17088 HD 17306 +59 594 HD 17145 HD 236995 +57 626 HD 16901 +54 651 HD 21389 HD 20041 HD 21291 +57 687 CASE 31 +56 739 CASE 32 +57 647 +59 580 HD 237006 HD 237153 CASE 33 HD 17378 +55 780 CASE 34 RS PER SU PER FZ PER AD PER S PER BU PER YZ PER ETA PER W PER Star The spacedistributionofthe supergiantsforwhich © American Astronomical Society • Provided by theNASA Astrophysics Data System Sp. type M2 IAB M3IAB-IB B3 IA M4 IB B2 IB HI IB B2 IB M3 IAB MO IAB A2 IAP M4 IAB Al IA Ml IAB M3 IAB BO.5 IA B1 IB B1 IAB B1 IB M2 IAB B1 IAB MO IAB B2 IB B2 IA K3 IB A3 IAB A2 IA B8 IB B8 IA B2 IA B8 IB A2 IA M2 IAB B8 IAB B8 IB F7 IB 82 IA M2 IAB 09 IB B6 IA K3 IB Ml IAB Ml IB AO IB B2 IB B1.5 IB K3IAB+B 09.5 IB M2 IAB B8 IA B9 IA B1 IB BO.5 IB Ml IAB M2 IAB Ml IB MO IB M3 IAB M1IB+B K5 IB GO IB ML IAB AO IA AO IA B9 IA A5 IA B1 IB B8 IB III. THESPACEDISTRIBUTION 134.5 134.5 135.2 135.1 135.1 135.0 135.0 134.9 134.9 134.7 134.6 134.4 134.4 135.2 135.1 135.1 134.6 134.6 134.6 134.5 134.4 134.2 135.8 135.6 135.5 135.5 135.3 135.3 135.3 135.9 135.4 136.1 136.0 136.0 135.9 136.6 136.3 137.4 137.1 136.2 138.0 137.9 137.7 137.3 137.1 139.1 139.0 138.6 138.4 138.0 137.9 142.9 142.6 141.6 141.5 141.2 140.1 139.9 139.2 139.0 138.8 138.7 142.6 138.5 143.5 142.9 142.2 -14.5 -4.2 -3.9 -3.5 -3.6 -3.6 -3.5 -3.6 -3.7 -3.9 -4.1 -4.8 -4.1 -3.4 -3.4 -3.3 -3.8 -2.9 -3.7 -3.7 -2.2 -3.5 -3.1 -2.6 -3.9 -3.3 -4.8 -5.2 -2.9 -2,3 -2.7 -2.6 -3.2 -1.7 -1.8 -1.4 -2.8 -1.5 -2.2 -1.4 -1,4 -1.8 -1.9 -1.3 -2.2 -1.0 -2.4 -2.3 -4.7 -2.4 4.7 4.4 -.0 -.6 -.3 3.4 -.4 -.4 2.9 2.2 2.1 1.9 1.1 B 1.1 .6 .0 .2 11.49 10.39 10.80 6.43 7.73 6.97 7.96 7.90 7.90 6.57 7.36 6.47 8.65 6,79 7.45 6.64 9.56 9.05 7.49 7.25 8.45 8.10 8.57 8.05 8.18 6.34 6.25 7.39 5.18 8.34 6.28 8.24 8.44 7.66 7.21 7.71 7.69 7.02 9.20 8.01 9.54 7.93 9.87 3.76 9.96 9.74 9.52 9.93 9.10 7.52 9.95 8.36 4.23 9.99 8.15 8.85 8.20 9.27 6.26 8.64 8.60 9.77 5.60 9.65 4.58 5.74 9.17 V B-V . *48 2.14 2.24 2.24 2.26 2.27 2.20 2.29 2.64 3.24 2.47 2.32 2.35 2.69 3.12 2.77 2.07 2.74 2.32 1.90 2.45 2.72 2.53 1.67 2.11 2.82 1.30 1.00 1.63 1.04 .57 .53 .61 .34 .30 .19 .23 .28 .33 .71 .50 .79 .37 .57 .90 .77 .30 .44 .73 .75 .90 .85 .78 .83 .82 .65 .66 .52 .74 .56 .42 .89 .57 .78 .41 .89 R. M.HUMPHREYS 2.63 2.74 2.64 2.61 2.32 2.50 2.98 2.69 2.22 2.13 2.04 2.00 2.91 2.29 2.72 2.32 2.67 3.93 2.19 2.21 1.96 1.76 2.21 1.91 1.87 2.49 2,10 2.07 1.83 4.06 2.04 1.53 1.80 4,31 3,42 12.75-43.0 2.67 2.28 2.37 3.40 2.50 2.02 2.58 4.41 2.31 3.40 2.90 2.31 2.84 3.03 2.47 2,96 1.68 1.94 4.17 13.58 2.11 2.05 11.70 2.17 1.00 1.28 1.03 1.91 11.51 .76 .67 .29 Table I{continued) 12.01 11.46 11.30 11.98 12.09 11.67 11.53 11.50 11.64 11.66 12.22 11.39 11.97 11.74 11.76 12.04 11.90 13.08 12.29 12.06 11.60 11.42 11.37 11.91 11.74 12.08 10.56 11.59 11.57 11.68 11.35 12.69 10.49 11.15 11.56 11.48 12.07 12.75 12.30 12.11 11.78 11.85 12.24 11.28 11.93 11.03 12.0? 11.60 13.63 11.83 11.66 13.28 11.80 12.55 10.81 10.83 12.42 10.22 13.54 11.80 R 1 1 -39.9 -40.0 -46.7 -47.6 -47.0 -40.4 -43.7 -38.1 -41.0 -45.9 -46.6 -39.4 -39.0 -40.2 -35.0 -49.3 -45.5 -53.5 -47.4 -41,7 -42.8 -37.0 -38.7 -21.8 -42.0 -25.6 -43.8 -46.0 -42.0 -15.2 -24.0 -39.0 -40.9 -61.5 -18.2 -50.2 -56.6 -42.8 -52.0 -38.7 -33.9 -49.0 -37.4 -53.3 -38.6 -36.0 -44.8 -51.3 -50.4 -11.9 -39.0 -28.2CAM0B3: -37.0 Vel. Vmod.Assoc,orcluster -30.9 -37.8 bution morerepresentativeof objectsofasimilarage. giants wereexcludedinanattempt tomakethedistri- are includedinthefirstfigure; thelater-typelbsuper- in theindividualstellardistances. Whileerrorsinthe apparent magnitudesandcolors forthesestarsare -1.0 -3.0' -6.0 -6.8 -16.0CAMOBI The scatterinFig.1isprimarily duetouncertainties -35.8 -28.2 -35,4 -37.8 -43.9 -40.4 -41.0 -39.8 -34.3 -33.0 -32.1 -30.1 -31.5 -34.2 -43.4 -29.8 -41.1 -28.6 -40.0 -55.3 -35.1 -48.6 -26.5 -37.7 -30.2 -13.2 -25.4 -13.4 -37.5 -32.3 -32.0 -33.6 -28.5 -38,7 -54,9 -34.0 -41.9 -35.3 -34.5 -39.3 -18.8 -41.7 -29.3 -15.1 -30.3 -36.9 -33.8 -31.2 -47.6 -5.6 PER OBI PER OBI PER OBI PER OBI CAS 0B6 PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI CAM OBI CAS QB6 PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI PER OBI CAM OBI CAS 086: CAS ÜB6ï PER OBI PER OBI PER OBI PER OBI PER OBI CAM OBI PER OBI-* PER OBI PER OBI PER OBI PER 081 PER OBI NGC 884 NGC 869 NGC 884 NGC 884 NGC 869 IC 1805 9.50 6.50 56,66 6.50 57.66 6,17,50 56.66 6,17,50 6.17.50 56.66 6.50 57,66 57.66 6.17.50 6.17.50 57,66 6,17,50 56,66 8,68 43,68 56,66 6,50 50,83 50,83 13,50,83 51,83 11,50 13,50,83 51,83 13,50 13,50,83 51,83 Sp. Sources ofinformation 66 66 66 66 83 66 66 66 66 66 66 66 66 66 66 66 66 44 66 50 66 66 66 66 68 66 66 50 51 44 12 51 66 83 50 8 83 13 44.97 44.57 44.57 55.83.97 44.51 51.57 51.57 44,57 18.51 18,51 18,51 44,97 18,51 18,51 18.51 44,97 18,51 18,51 44,97 44, 46 4,44 44,97 51,83 51,83 51,54 51,83 51,83 Phot. Vel. 44 18 98 18 98 44 16 79,98 18 18 18 *4 51 18 44 51 18 18 44 51 44 18 18 51 51 51 51 18 18 51 51 51 51 16 18 18 18 18 18 50,98 79.98 50.98 50,98 50.98 50,98 50,98 50,98 79.98 79.81.98 79.98 79,81 98 98 98 50 98 50 98 79 98 93 50 79 98 98 98 98 98 98 98 98 98 98 98 98 98 79 79 50 50 50 50 98 50 98 98 50 81 50 81 50 1970AJ 75. . 602H uncertainties intheassigned luminosityclassesandin small, therearestillsubstantial errorstobeexpected, certainty ofabout25%inthe distance. on theorderofO^S,in distancemodulidueto their calibration.Suchanerror correspondstoanun- HD 25056 HD 237213 +55 838 HD 237211 +55 837 +51 710 HD 37536 HD 246901 HD 24398 HD 232947 HD 25914 ALPHA PER ALPHA CAM HD 40297 HD 42454 HD 41398 HD 39866 HD 35601 HD 35600 HD 33299 HD 36891 HD 31327 +43 1168 +52 729 HD 52382 HD 44391 HD 37387 HD 40111 HD 40589 HD 39949 BETA CAM HD 49068 HD 60414-5 HD 61347 HD 58720 HD 56847 HD 58526 HD 50064 +0 1472 HD 47240 HD 40003 HD 47731 HD 39970 Nevertheless Fig.1showsthat thesupergiantsare ZETA ORI HD 44213 HD 46300 HD 43837 HD 48640 HD 41117 HD 43384 HD 42087 HD 250290 EPSILON ORI HD 46783 HD 248587 HD 52005 EPSILON GEM MU PER KAPPA ORI CHI AUR EPS AUR BETA ORI WY GEM ALPHA ORI TV GEM BU GEM 119 TAU © American Astronomical Society • Provided by theNASA Astrophysics Data System Star Sp. typeL GO IB 09.5 IP 09.5 XA M2 IAB GO IB GO IB B3 IB F5 IB B2 IB B3 IA B6 IA B5 IB G2 IB A2 IB Ml IB K1 IB G3 IB A8P IA B2 IAB KO IB 09 IB K1 IB AO IB G2 IB B2 IB B1+G5IB B2 IB B9 IAB B1 IB BO IA. M2EIAB+B Bl IB G3 IB BO.5 IA 09.5 IB AO IA KO IB B9 IAB B9 IB B5 IAB M2EIAB+B G5 IB Bl IB B2IAB-IB B5-B7 IB B6 IA B2 IB B8 IA Bl IB M3 IB-II G8 IB Ml IA M2 IB B3 IB AO IB M2 IAB K3 IB B2 IB Kl IB Ml IAB B2.5 IB B3 IB BO IA B9 IB B2 IA AO IAB B3 IAB 148.7 231.1 230.6 222.2 222.0 214.5 206.4 168.1 151.6 149.6 149.0 147.6 147.1 146.0 144.1 230.6 230.3 212.7 210.2 207.0 205.2 204.3 202.4 182.4 181.2 176.0 162.8 162.3 153.9 147.6 147.4 146.6 144.6 229.9 209.2 204.3 182.9 182.7 182.3 177.0 176.9 176.8 175.8 174.2 169.5 162.8 184.8 184.0 183.9 182.7 189.5 188.2 186.0 185.3 199.8 199.5 190.5 189.2 188,0 187.9 187.7 187.1 186.6 186,1 190.1 189.7 189.1 -16.6 -17.2 -16.7 -10.5 -18.5 -25.2 -5.9 -1.8 -4.5 -2.9 ' .7 -2.7 -4.4 -4.2 -5.3 -2.1 -3.7 -4.2 14.0 -1.3 -8.9 -3.7 -8.1 11.4 10.1 / .1 2.0 2.7 3.9 3.0 3.9 2.1 2.3 -.6 4.4 2.9 3.8 -.8 -.6 6.7 2.2 5.3 5.0 -.7 9.6 -.2 1.9 2.5 9.2 2.2 9.7 -.9 2.2 2.3 1.9 1.2 1.2 3.5 1.4 1.0 1.8 1.6 B • 6 .2 KINEMATICS OFSUPERGIANTS 1Ó.13 9.75 4.30 2.98 9.29 7.99 9.57 7.46 6.42 7.35 . 6.10 6.06 9.39 2.85 4.06 6.99 8.98 6.49 9.15 6.06 7.27 7.33 5.72 4.76 6.67 6.16 4.13 9.32 8.72 7.51 4.99 8.43 9.20 5.97 2.04 6.15 7.57 4.81 7.22 8.08 1.80 8.86 8.21 4.48 4.29 6.50 6.02 7.74 7.98 4.63 2.99 7.94 6.41 6,26 7.29 7.38 1.75 Í .70 5.69 8.37 7.20 6.58 5.75 6.06 8.60 .08 .76 B-V r -.21 2.20 2.12 -.18 -.03 -.19. -.07 1.20 1.01 1.06 2.30 2.25 1.24 1.58 1.04 2.05 1.32 1.42 1.97 1.40 1.81 1.08 1.66 1.41 1.72 1.66 .71 .77 .49 • 48 .59 .03 • 41 .54 • 12 .91 .82 .60 .17 • 24 .29 .30 .18 • 92 .96 .64 • 22 .22 .92 .77 .70 .15 .32 »32 .16 .02 .39 .31 .74 .82 .27 1.0411.0216.8 .65 .45 .22 .61 t <3.30 4.74 3.48 3.31 4.17 2.64 2.41 11.67 4.15 3.61 3.48 3.61 3.89 6.31 2,77 2.30 2.15 1.00 1.21 1.00 5.60 3.40 2.12 1.36 1.13 1.35 1.16 2.28 3.31 2.49 1.22 1.49 1.19 1.41 3.34 2.04 1.21 1.15 1.82 1.10 1.03 Table I(continued) 1.83 1.08 1.65 1.92 1.61 1.47 • 80 .32 .39 .16 .94 ,44 .91 .37 .31 .27 .34 .19 .85 .14 .37 .71 12.88 10.66 12.31 13.06 10.14 14.14 11.13 10.94 10.98 14.04 10.33 13.11 10.86 13.19 13.44 11.36 11.22 11.35 10.91 11.15 11.16 10.34 13.29 13.03 14.85 10.91 10.37 10.31 11.15 13.00 12.47 11.27 10.28 11.14 11.91 11.03 12.30 12.12 11.21 12.15 14.27 10.24 10.31 10.78 11.80 13.27 10.37 12.48 11.81 11.09 11.61 12.11 10,13 10.18 13.31 11.07 12.02 11.64 11.46 13.12 10.67 R iio /=30-290°; theOrionarm passingthroughthesolar generally recognizedspiralarms inthisregionofthe been sketchedin.Thesefeatures includethethree located inratherbroadspiral features.Themajor spiral featuresastheyappear fromthesupergiantshave Galaxy: theSagittariusarm, 2kpcfromthesun 1 1 1 1 1 1 1 1 -39,8 -44.2 1 1 -18.2 1 -25.1 -43.6 Vel. Vmod.Assoc,orclusterSp.Phot. 7 -2.4 -5.3 -l.O -5.0 -2.0 -6.4* -1.2 -2.5 20.6 22.0 22.0Î 39.0 21.0 62.0, 21.0 36.0 -9.4 16.7 82.0, 66.0 51.0 26.0 -6* 19.0 13.6 21,0 24.5 21.5 20.3 27.5 11.4 22.0 22.5 16.6 13.8 17.9 18.1 12.3. 19.0' 16.0 13.5 16.5 17.0 13.2 16.0 6.1 4.8 -.2 -i 9.9 6,5 8.0 -39.5 -35.7 -11.6 -40.6 -1.0 -1.2 -4.1 98.6 91.4 39.3 56.2 31.9 34.1 24.8 MONOBI 11.2 22.8 14.7 11.7 12.6 12.2 17.3 14.0 13.3 12.9 17.0 19.7 17.6 19.7 17.7 17.1 18.0 14.4 16.6 7.8 7.8 2.1 7.5 8.2 1.2 CAM 083 CAM OBI CAM DB3 CAM 0B3 CAM 0B3 AUR OBI CAM 083 PER 0B3 AUR OBI AUR OBI AUR OBI AUR OBI AUR OBI AUR OBI C MAOBI PER 0B2 ORI OBI ORI OBI MON 082 ORI OBI ORI OBI ORI OBI GEM OBI GEM OBI GEM OBI GEM OBI GEM OBI GEM OBI GEM OBI NGC 2287: NGC 2422: NGC 2129 NGC 2129 8/68 51/66 83/51 Sources ofinformation 66 66 66 66 68 66 66 44 66 66 76 66 66 66 70 9 66 66 66 66 66 9 66 41 83 11 66 66 44 66 66 66 66 51 66 66 66 44 68 66 41 66 13 12 11 68 66 68 68 66 9 66 68 66 66 68 41 66 66 31 13 11 13 48/83 48/61 52/62 21/52 48/61 44/52 32/52 2/52 2/32 44 44 44 44 44 44 44 44 44 51 18 51 44 2 51 44 18 29 44 30 52 51 51 44 44 44 44 18 18 51 18 18 44 44 44 44 51 51 18 83 44 44 51 18 18 18 18 51 51 51 51 18 18 18 18 18 79/98 81/98 Vel. 98 98 98 98 98 98 98 81 98 98 98 98 98 98 98 98 81 98 98 98 98 98 98 98 98 98 98 98 98 41 98 98 41 98 98 98 609 98 98 98 79 98 98 98 98 98 98 98 98 41 98 98 81 81 1970AJ 75. . 602H no u o neighborhood froml=70-270°; andthePerseusarm, feature. luminous supergiantsinthe directionoftheGalactic which maybeassociatedwith amoredistantspiral center apparentlysituatedbeyond theSagittariusarm, 2 to3kpcdistancefroml= 100-140°. Therearemany 610 HD 77581 HD 91969 HD 72800 HO 74371 HD 94493 HD 305619 HD 93737 HD 94909 HD 93070 HD 93028 HD 94367 HD 93206 HD 92207 HD 92850 HD 91943 CPD-57 3502 HD 80108 -'46 3272 HD 79186 HD 75149 HD 74180 -44 3129 HD 75860 HD 64760 HD 61715 HD 75222 HD 68553 HD 62150 HD 70761 -31 4911 HD 62623 HD 62576 HD 63290 HD 91056 HD 94369 HD 92964 HD 91533 HD 89388 HD 90772 HD 93840 HD 89201 HD 81471 HD 80558 HD 78344 HD 75276 -30 5135 HD 59890 HD 63700 HD 53138 HO 60308 HD 91619 HD 90853 HD 90706 -31 4916 SIGMA CMA HD 59612 HD 56577 HD 50877 HD 58131 HD 63302 LAMBDA VEL DELTA CMA R PUP ETA CMA VY CMA* PHI VEL IOTA CAR © American Astronomical Society • Provided by theNASA Astrophysics Data System Star Sp.type K3 IB M3E IAB K3 IB AO IA K3 IB AO IA A2 X K5 IB K3 IB K5 IB 09.5 IB B5 IAB K3 IB MO IAB A5 IB K3 IAB G8 IAB 09.5 IA 09 I AO IA BO.5 IB MO IAB B3 IA FO IA B9 I B1.5 IAB BO.5 IB F4 IAB F2 IB B1.5 IB M2 IAB GO IA G1 IB A2 IAB B5 IA G3 IB F8 IA B3 IA B5-8 IB B2 IAB BO.5 I K3 IB BO IB Bl I B3 IA BO IB BO IA FO IB Bl I Bl I A7 IAB B7 IAB 09.5 IA BO.5 IB B3 IA F2 IAB B1 IB BO I B3 IA F2EIAB B2 IAB BO IB B5 IA FO IA B4 I B5 IB FO IB 261.4 256.4 285.8 267.6 265.9 265.3 264.7 264.4 263.1 262.1 258.3 247.3 246.8 246.8 246.5 243.9 242.6 241.5 289.0 286.0 285.8 285.7 285.6 284.6 282.1 278.4 273.1 267.4 267.4 265.3 265.2 264.1 246.5 246.4 244.8 244.4 243.9 239.4 239.2 ■ 237.7 235.6 235.0 234.5 233.6 288.0 287.6 287.4 287.3 286.3 285.9 285.5 285.2 284.5 282.1 ¿79.4 273.8 268.9 265.6 238.4 236.5 231.4 288.2 288.1 288.0 287.8 287.8 287.1 -10.4 -12.9 *10.3 -10.2 -3.2 -2.7 -4.4 -2.3 -6.5 -8.2 -1.2 -7.0 -1.0 -2.9 -2.0 -4.4 -4.4 -6.0 -2.5 -5.1 -1.0 -1.5 -1.2 -3.8 -1.0 -1.7 -1.7 -4.6 -4.8 -1.4 -8.3 -2.4 -5.2 -2.4 -5.5 -1.5 11.1 B 6.2 -.3 -.5 -.4 -.4 3.9 4.2 4.7 -.6 -.1 -.5 3.4 2.8 -.9 -.4 -.9 2.3 2.0 2.0 1.9 1.1 1.5 .1 .1 • 6 .1 .0 .3 .1 .0 6.71 4.44 9.20 6.61 4.58 7.24 9.42 4.56 6.88 7.41 7.67 5.89 4.64 6.00 7.35 7.33 5.25 6.51 7.31 5.99 6.15 4.67 7.84 2.24 5.11 5.47 3.85 6.61 9.43 7.59 4.23 5.60 8.20 3.96 9.26 3.34 7.73 6.70 5.26 8.35 6.30 5.41 5.47 8.05 3.39 3.82 7.06 7.77 3.54 6.09 5.90 9.06 5.00 2.23 5.23 8.77 2.41 3.46 4.84 4.83 3.01 7.37 8.20 8.96 5.76 3.84 1.83 V B-V -.07 -.09 -.11 -.06 2.06 -.04 -.15 2.11 1.62 1.63 1.54 1.73 1.72 1.86 1.10 1.66 1.69 1.24 1.72 1.73 .72 .40 .15 .05 .07 .56 .53 • 38 .04 .15 .50 .02 .27 .50 .27 .49 .01 .31 .36 .31 .68 .18 .57 .53 .81 .69 .14 .21 .73 .38 .92 .18 .67 .24 .42 3,4712.46 .13 .30 .50 .47 .22 .55 .24 .34 R. M.HUMPHREYS 2.15 4.31 4,49 2.98 4.63 3.10 5.06 2.43 3.84 2.37 2.11 2.81 3.12 1.05 10.4664.5*29.0 2.29 2.91 5.75 1.95 2.26 2.48 1.13 2.58 2.08 2.02 2.17 1.32 1.07 1.07 1.47 1.50 1.58 1.51 1.51 1.68 1.28 1.56 1.96 1.68 1.39 Table I{continued) .42 .73 .44 .23 .44 .55 .56 .78 .39 .43 .70 .24 .54 .19 .93 .57 .44 .36 10.11 10.65 10.20 10.36 10.52 11.56 12.49 10.25 10.54 10.11 11.80 10.30 10.43 11.48 10.04 10.28 10.23 10.75 10.21 10.28 10.19 10.17 12.37 13.04 10.61 10.25 10.34 10.15 10.33 10.16 10.02 10.34 10.10 10.07 10.01 9.46 9.65 9.70 9.65 9.89 9.56 9.64 9.68 9.91 9.87 9.51 9.53 9.91 9.66 9.66 9.66 9.67 9.63 9.64 9.91 9.90 9.69 9.79 9.97 R individual stellardistances.A starwasconsideredtobe distances foreachstellargroup werederivedfromthe and clusters(TableI)weregrouped togetherandmean supergiants, includingthe later-type lbsupergiants, that appearedtobelongvarious stellarassociations 2 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 -12.0 -29.0 -16.0 -20.0 -12.0 -22.5 -27.0 141.0 -8.0 -5.6 43.0 60.0 In ordertoreducethescatter inFig.1,allofthe 39.0 24.6 41.0 66.0 77.Oi 75.0, 68.0 32.7 43.0 34.1 48.4 36.6 32.2 75.3 -3.0 -1.7 -1.2 -1.0 -3.3 25.2 25.3 23.0 25.0 21.5 35.8 -l.O -2.0 -5.0’ 23.0 32.0 34.0 U.O 15.9 27.9 14.0 28.0 34.6 10.0 18.4 13.3 14.4 14.1 Vel. Vmod.Assoc,orclusterSp.Phot. 2.7 9.3 2.0 9.3 7.0 8.4 .0 59.4 20.3 73.3 32.2 23.5 27.8 20.8 29.5 31.3 66.4 -3.0 -2.2 34.1 75.7 25.0 33.2 24.8 25.0 25.6 23.9 22.8 22.2 84.5 24.0 15.9 10.2 12.9 16.3 19.7 15.6 7.8 7.9 8.6 9.3 2.3 2.5 1.1 8.6 1.1 1.3 1.6 .3 .3 .9 CAR OBI CAR OBI VEL OBI VEL OBI* VEL OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI VEL OBI VEL OBI VEL OBI VEL OBI CAR OBI CAR OBINGC3293 CAR OBI CAR OBI* COLL 121 COLL 121 COLL 121 NGC 2414 NGC 2439 NGC 2439 NGC 2439 COLL 121 CDLL 121 NGC 3293 NGC 3324 NGC 3293 NGC 3293 COLL 231 IC 2581 IC 2581 9*92 8s68 47/84 8/68 8s68 24/49 13/91 Sources ofinformation 9 66 66 47 66 66 8 38 66 8 48 91 66 24 66 66 47 71 66 66 66 48 66 48 51 47 49 47 32 8 38 80 13 7 8 12 13 34 25 38 36 80 10 13 13 13 13 5 10 10 47 13 10 10 10 10 10 10 10 10 29/48 29/86 28/29 52/86 51/92 48/61 29/48 40/51 39 48/87 26/98 29/48 29/36 29/36 28/29 29/52 28/29 29/95 23/98 29/95 29/36 28/29 28/29 98 28/29,86 38 28/29 52 49 49 44 44 40 51 87 29 51 40 28/39 29 29 18 51 18 51 34 40 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18 98 18 98 18 98 18 18 18 98 18 27/98 92.» 98 26/98 27/37 27/39 27/13 27/98 26/98 27/98 27/38 27/98 Vel. 98 37 98 98 98 98 98 98 98 98 37 98 98 38 38 98 98 98 98 98 98 98 51 39 37 39 38 25 37 98 38 98 38 34 98 98 38 27 13 13 1970AJ 75. . 602H study oftheOBassociations. Manyoftheearly-type similar tothatfollowedbyMorgan etal(1953)intheir associations orgalacticclusters. Thisprocedureis investigated wereprobable members ofeitherstellar and radialvelocity.Sixtypercent ofallthesupergiants a possiblememberonthebasis ofitsposition,distance, -HD 123008 HD 142565 HD 142468 HD 142758 HD 136239 HD 135591 HD 125241 HD 122324 HD 122879 HD 124471 HD 125835 HD 120521 -61 3926 HD 117856 HD 117707 HD 115842 HD 116119 HD 115363 HD 114340 HD 114213 HD 114024 HD 113422 HD 113012 HD 112842 HD 112272 HD 112244- HD 111990 HD 111973 HD 111934 HD 111904 HD 111613 HD 111558 HD 111194 HD 108002 HD 109867 HD 108968 HD 107209 HO 106343 HO 106068 HD 102839 HD 103779 HD 102878 HD 102997 HD 101712 HO 101947 HD 101333 HD 101545F HD 101332 HD 99857 HD 100943 HD 100199 HO 99953 HD 100276 HD 100262 HD 100261 HD 308395 HD'99939 HD 98733 HD 97707 HD 96919 HO 97319 HD 97534 HO 96880 HD 96918 HO 96246 HD 95731 HO 95461 Star © American Astronomical Society • Provided by theNASA Astrophysics Data System BO ZB BO.5 I Bl I B2 IA+- 09 IB 09 I BO.5 I BO IAB A2 IA 09.5 I B2 IB 09 I B8 IA BO IB BO.5 I BO.5 IAB B9 I Bl IA+ Bl IA+ Bl IB BO.5 IA Bl IA BO IB B5 I BO.5 IA 09 IB B3 IB B3 IAB B2 IB B9 IA A1 IA B8 IA M2-3 IAB BO.5 I F5 IB Bl IB AO I B2 IA B9 IA G5 IB BO.5 IB A2 IA B5 IA M2EPIB+B GO IA BO IAB 09.5 IB Bl IB 81 IB Bl IBP 85 IA B2 IA A2 IA GO IA Bl IB B5 IB B2 I Bl IB 09.5 IB 82 IA B9- IA FO IA B1 IB GO IA+ Bl IAB Bl IB BO.5 IAB Sp.type 321.0 327.9 325.3 321.2 320.1 313.5 312.8 312.3 311.5 311.3 310.7 311.0 308.9 307.4 307.3 307.1 306.6 305.9 305.4 305.2 305.1 304.5 304.2 304.1 303.5 303.4 303.2 303.2 303.2 303.2 302.9 302.9 302.5 301.7 300.4 300.1 299.3 298.9 298.5 297.7 296.8 296.0 295.2 295.9 295.2 295.0 294.9 294.8 294.8 294.2 293.9 293.9 293.3 293.0 292.9 292.4 291.9 292.1 291.2 291.1 291.1 291.0 290.1 290.0 289.9 289.4 289.2 -4.3 -1.7 -2.6 -6.9 -5.1 -1.5 -2.8 -2.7 ■—*8 -6.8 -4.4 -2.5 -1.8 -8.0 -1.1 -.7 -1,6 -1.8 -1.2 -5.0 5.5 -1.5 -2.1 1.8 3.4- -1.0 -.5 6.8 -1.4 -.9 3.0 3.1 1.3 2.8 6.0 2.5 1.1 2.5 2.5 2.5 2.6 2.6 2.5 -.2 3.4 -.4 -.6 -.6 -.8 -.1 • 1 3.3 -.1 1.8 -.6 1.9 .5 1.0 1.3 .6 • 2 B .8 .8 .2 .7 • 5 .3 94 KINEMATICS OFSUPERGIANTS 9.05 Z* 7.06 7.91 5.47 . 9.!5 6.41 5.31 5.60 8.74 - 8.67 6.86 8.90 9.44 6.01 10.40 7.91 7.79 8.07 9.78 8.98 8.25 7.35 8.13 7.04 5.40 6.79 5.94 7.00 5,76 5.73 7.30 6.24 7.58 5.43 6.93 6.80 6.24 4.96 5.92 7.23 5.69 6.55 7.80 5.04 6.38 8.96 7.60 7.63 7.11 6.45 8.10 7.20 5.16 7.20 5.10 7.95 5.15 7.57 6.55 8.05 8.50 4.60 3.93 9.08 .74 8.83 V B-V 2.07 -.01 1.40 .46 1.84 .59 • 21 .74 • 10 .48 .36 .11 .49 • 06 .34 .20 .26 .53 1.25 .29 .71 .61 • 61 .91 .27 .83 .11 .22 .80 .25 1.849.12 .23 .18 .32 .37 .06 .60 .13 .25 .10 .29 .26 • 30 .79 • 10 .01 .09 .12 .12 .00 .31 .05 2.62 .48 1.88 .11 2.37 .05 3.659.26 .17 .51 .22 .25 .53 •46 • 16 .40 .41 % <2.51 3.45 2.01 2.48 4.68 4.83 2.72 1.54 2.27 4.13 4.66 1.97 1.64 4.37 1.31 5.01 5.70 8.39 1.81 2.19 3.61 2,27 2.15 1.32 2.11 2,37 2.52 2.39 2,07 1.83 2,75 2.65 2.95 2.77 3.25 3.58 6.46 3.02 4,90 1.95 2.86 4.25 2.27 3,18 3,60 2.05 3.72 2.61 2.10 3.84 4.07 1.76 1.80 .74 .45 Table I(continued) 7.31 8.36 7.00 8.09 8.87 7.59 8.36 8.80 9.00 7.93 7.81 8,67 8.13 9.27 8.15 9.08 8.15 8.60 8.94 9.34 8.51 8.93 9.00 9.02 8.89 8.93 9.17 8.95 9.65 9.14 9.00 9.04 9.80 9.09 9.11 9.07 9.06 9.21 9.33 9.35 9.15 9.18 9.16 9.14 9.31 9.28 9.34 9.43 9.30 9.46 9.32 9.33 9.54 9.39 9.54 9.49 9.45 9.48 R Vel.Vmod.Assoc,orclusterSp. 1 1 1 2 1 2 -25.0 -52.3 -40.0 -30.1 1 -63.0 -61.0 -47.0 -56.0 -34.0 spiral featuresaremoreclearly defined.Thespiralarm supergiants isshowninFig. 2 inwhichthethreemajor in thisdiscussionaswell. middle- andlate-typesupergiants havebeenincluded -21.0 -36.0 -20.Oj -30.0, supergiants areincommon with theirstudy,butthe -22.0 -71.0 -45.2 1 -45.0 -45.6 -31.O -70.O -32.2 -17.0, -21,9 -18.0 1 -22.0 -38.0 1 -17.8 -10.0 -19.3 -15.2 -20.9 1 -19.2 -16.0 -19.6 1 -1.4 -10.0 - -9.0 -16.8 -19.5 -22.4 -2.1 -16.0 -4. 26.0 28.2 -2.0 -7.0 -7.0 -20.1 -2.0 -19,0 -2.0 16.2 3.8 10.1 2.0 -25.3 1 -3.0 -6.0 -8.4 13.0¡ 18.0 The resultingspacedistribution ofthesegroups 6.4 -.3 6.0 1.2 2.0 - 7.3 X.O -67.7 -21.6 -36.3 -59.1 -49,3 -53.9 -34.9 -22.5 -10.6 -44.9 -13.7 -17.0 -20.4 -20.0 -23.9 -22.6 -22.1 -14.7 -15.9 -13.4 -17.7 -15.3 -10.8 -11.4 -2.3 -9.7 -9.4 -7.1 15.1 -9.9 10.2 -9,9 -5.6 -7,8 CENT OBI CENT OBI CENT OBI CENT OBI CENT OBI CENT OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI CAR OBI NGC 4755 NGC 4755 NGC 4755 NGC 4755 NGC 4755 NGC 4755 IC 2944 IC 2944 IC 2944 IC 2944 IC 2944 IC 2944 IC 2944*. NGC 3590 IC 2944 NGC 3572 NGC 3532s 84/94 39/66 38/84 3/42/95 3/42 10/42 47/84 47.» 88 84 39 38 84 5 94 84 24 39 5 38 66 47 66 66 66 36 36 66 36 38 66 94 42 66 42 10 38 27 38 66 13 10 71 84 13 88 10 88 66 88 66 66 66 66 37 Sources ofinformation 10 38 66 10 36 36 66 10 66 66 66 10 10 28/29 29/48 28/29 29/36 28/29 28/29/86 35/38/42 35/42 29/48 29/86 29/48 40/51 28/29/40 28/29/86 28/29/40 40/51 29/40 29/48 40/51 Phot. 51 51 51 51 51 51 29 29 51 51 29 51 29 51 51 36 36 51 51 35 18 18 18 51 51 40 40 29 18 18 51 18 88 88 51 40 36 18 36 18 40 40 40 18 18 27/38/98 27/39 27/98 23/38 27/38/98 35/42/98 35/42 35/42/98 27/37 42/35 27/38/98 27/39 39 39 38 Vel. 39 39 39 39 39 38 37 39 38 39 39 37 37 37 37 38 39 35 38 98 98 27 38 38 98 88 39 38 33 98 98 37 38 27 98 37 98 98 611 1970AJ 75. . 602H n0 612 patterns arestillratherwide, whichinthiscaseis presumably notduetoerrors in theindividualdistances. large concentrationfrom Z= 125-135°,andthe stellar groupisabout200pc. ThePerseusarmappears A typicalprobableerrorin themeandistanceofa as arelativelybroadfeature about800pcwidewitha -54 7226 -53 7400F -53 7400P -53 7366N HD 137709 -51 9193 -51 9171 HD 329905 HD 135345-6 HD 150898 -53 7364 -53 7344 HD 147331 -51 9170 HD 146919 HD 149426 HD 144969 HD 328857 HD 150675 HD 150197 HD 148379 HD 150041 HD 135153 HD 149019 HD 146628 HD 146143 HD 150884 HD 328209 -49 9731 -47 7883 HD 149076 HD 149038 HD 329027 HD 152234 HD 152147 HD 149404 HD 150421 HD 154368 HD 152685 HD 155985 HD 148546 HD 152235 HD 148688 HD 154043 HD 151018 HD 161653 HD 154090 HD 157038-9 HD 154385 HD 159532 HD 152667 HD 152249 HD 152424 HD 152236 HD 316332 -33 12242 UPSILON SCO HD 156134 HD 155603 HD 152405 HD 163065 ANON HD 165793 HD 160529 ALPHA SCO IOTA SCO Star © American Astronomical Society • Provided by theNASA Astrophysics Data System Sp. type K4 IB A5 IB K5 IB K3 IB K2 IB G5IA+B BOIAB FO IB GO IB BO.5 IA 09 I BO IA BO IA B1.5 IA A1 IA BO.5 IA BO IA BO.5 IA 09.5 I(A K1 IB BO I 82 IA 09.5 IA F8 IAB 09.5 IA BO.5 IB BO IB FO I 09.5 I BO.5 IA B6 IA 09 I BO IA F2 IB F8 IA 09.5 I B1 IA 09.5 IAB 09.5 IAB G5 IA BO.5 IA BO IAB 09 I BO.5 IA BO IA Bl I BO.5 I M1IB+B B1 IAB F2 IA B4 IA BO.5 I FO IB BO IB BO IA B2 I BO.5 I B1.5IA+ B1 IAB BO IB A2 IA+ B1 IA B3 IB BO I B3 IA BO.5 IB 329.7 329.7 329.6 330.0 329.7 329.7 329.7 329.0 331.6 331.6 330.4 330.0 3.32.2 331.9 331.4 338.0 337.2 335.1 333.0 338.4 337.6 337.2 336.3 336.2 335.5 333.2 338.5 338.0 337.8 333.5 339.4 339.0 338.9 338.9 343.4 340.7 340.6 340.6 339.5 350.6 350.0 349.9 347.4 344.5 344.3 343.6 343.4 343.4 343.2 343.0 350.8 349.5 347.1 344.6 343.4 343.3 352.4 354.7 351.9 351.3 351.2 3-59.1 355.7 355.7 359.7 359.6 -2.2 -2.2 -2.2 -2.3 -8.5 -2.2 -2.2 -1.0 -2.0 -l.l -2.2 -1.0 -1.3 -1.4 22.1 13.6 -1.2 -1.7 -5.2 -1.6 -6.1 -3.6 -3.9 -6.0 -B.l -1.7 -5.2 -1.9 -2.7 15.1 -.9 8.0 4.6 -.9 2.0 -.8 2.8 2.5 -.1 -.6 1.6 4.3 -.4 -.8 7.1 3.0 3.2 2.8 -.6 4.3 -.9 1.5 1.2 1.1 1.0 -.4 1.2 1.2 -.7 1.9 1.4 • 4 .3 .4 .9 .9 10.44 10.27 1Ö.75 9.69 7.32 9.01 9.13 5.25 9.87 9.87 9.79 5.20 8.25 5.55 8.79 9.51 7.06 4.90 4.98 8.80 8.58 9.51 5.38 7.48 7.45 9.98 8.28 9,96 7.07 9.79 4.89 9.85 9.77 6.23 7.01 6,40 6.12 6.09 6.48 7.76 6.35 6.30 5.32 3.01 7.37 7.48 7.31 4.77 7.08 5.49 8.67 6.60 7.20 2.69 4.86 6.14 6.53 7.20 6.47 9.36 9.47 6.67 8.02 8.63 1.86 1.08 V B-V -.08 1.75 1*86 1.78 1.1Ö 1.20 -.06 -.22 2.22 2 1.28 1.16 1.80 1.38 1.10 .37 • 94 • 85 .48 .85 .53 .66 .54 .38 .94 .79 .67 .40 .62 .08 .88 .64 .57 .39 .47 .87 .83 .32 .08 .85 .82 .09 .28 .39 .48 .62 .43 .40 .28 .19 .24 .15 .37 .55 .63 .00 .61 .51 .73 .34 .11 .27 .48 .37 4.095.91-40.O-10.8SGRQB5í R. M.HUMPHREYS 4.15 2,04 3.34 3.05 5.57 5.8415.0 3.70 3.47 3.48 3.36 2.09 1.85 2.75 4,70 1.72 3.85 3.47 2.37 6.03 4.65 5.25 1.29 6.46 3.28 7.59 1.01 1.67 2.05 2.61 3.39 1.91 2.24 7.88-17.0,-26.0 2.65 2.16 2.31 3.09 2.95 2.32 1.15 1.36 1.02 2.23 1.36 1.97 1.92 1.26 2.20 1.34 1.00 1.51 1.25 3.02 1.89 1.41 1.98 .71 .64 .78 .48 .83 .15 .12 Table I{continued) 7.53 9.40 7.06 7.31 8.45 7.13 7.13 7.23 8.26 8.30 6.66 9.08 6.62 7.89 7.59 8.55 6.96 6.16 8.55 4.92 5.52 8.87 4.11 5.80 9.05 9.41 4.61 7.05 8.26 7.50 9.26 7.61 6.95 7.96 8.92 6.95 9.02 7.12 9.85 8.13 8.81 8.06 8.73 7.70 9.88 9.53 9.18 8.68 7.79 8.70 8.18 8.80 8.14 8.61 8.53 7.80 6.98 7.78 8.03 R Vel.Vmod.Assoc,orcluster z 1 1 1 1 2 1 I]:0 IIo IIo 1 -43.5 -27.3 -32.0 -30.8 -18.1 -11.9 -48.0 -51.7 -82.0‘ -61.7 -27.0 -54.0? -24,3 -35.9 -55.5 -45.7 -30.1 -61.Oj -77.O -71.0 1 -14.2 -15.5 -22.8 -24.0 -18.5 -32.0 -42.0 -38.0 -28.0 -57.0 -41.0 -< 2 noticeably narrowerwithawidth ofabout300pc. -24.1 -55.0 -36.0 -28.0 -23.9 -14.0 -12.0 -48.0 -48.0 /=265 -285appearto establish theOrionand -27.6 -14.0 -12.0 -18.0 region (¿=285-300°)isan extensionoftheOrion Sagittarius armisabout500 pc wide.TheOrionarmis arm, thetwoemptyregions from/=20-70°and -31.O -21.0 -22.4 -34.4 -14,1 1 -6.0 -5.0 -6.0 36.0 -13.8 -3.0 18.0. 5.°; 8.0 6.1 1.4 l.O Although Bok(1959)hassuggested thattheCarina .0 -24.6 -19.3 -68.8 -14.0 -15,6 -27.0 -12.6 -13.6 -24.1 -23.6 -31.9 -16.9 -17.1 -25.0 -26.3 -16.9 -18.2 -13.0 •26.9 44.2 66.2 44.7 96.2 -7.1 4 ARA OBIA ARA OBlî ARA 0B1B ARA QBIBNGC6204: ARA QBIBNGC6193 ARA 0B1BNGC6193 ARA OBIA ARA OBI: ARA OBIA ARA OBI ARA OBIA ARA 0B1BNGC6204 ARA OBI: ARA QB1B SCO OBI SCO OBI SCO OBI SCO OBI SCO OBI SCO OBI SCO OBI SCO OBI SCO OBI SCO 0B2 SGR 0B5 SGR 0B5 : NGC 6067 NGC 6067 NGC 6067 NGC 6067 NGC 6067 NGC 6067 NGC 6169 NGC 6231 NGC 6231 NGC 6318: COLL 316: NGC 6231 NGC 6231 NGC 6231 NGC 6231 NGC 6231 CQU 332 COLL 347* 47/84 47/84 47/84 71/93 8/10 67/69 47/84 10/60 Sp. Sources ofinformation 36 53 89 89 89 89 36 37 36 89 89 47 96 13 96 96 96 24 36 10 36 96 96 96 36 37 37 10 10 36 94 49 93 38 96 38 84 38 38 84 10 44 84 38 10 10 44 44 71 44 38 9 25 10 44 10 10 10 Phot. 29/52 3/48*95 36/96 28*29 28*29 28*29*86 38 28/29 29*52 28*29 29*52 51 51 89 36 36 51 36 89 89 89 36 89 96 96 96 63 18 96 96 36 96 36 96 96 36 36 36 18 95 48 18 51 51 96 29 95 51 62 95 51 44 18 18 44 44 51 44 44 18 98 18 38*98 18 23 18 18 18 25*39/98 25*98 38*98 23*98 25*98 37*98 27/98 Vel. 98 98 89 39 37 37 37 37 89 89 89 39 98 37 98 37 37 37 37 98 98 37 98 98 98 98 98 98 98 98 38 38 39 98 38 38 98 98 38 37 27 1970AJ 75. . 602H 4. Whiteoak(1962)suggestedthattheremaybemoredistantstellar 2. Oneofthe24supergiantsrejectedfromleast-squaressolutions. 3. Herbig(1969)hassuggestedthatVYCMamaybeaprotostar. 1. Thisstar’sradialvelocitywasnotincludedintheleast-squares : Meansdoubtful. 25. Buscombe,W.,andMorris,P. M. 1960,MonthlyNoticesRoy. 22. Buscombe,W.1959,Mt.StromloMim., No.3. 26. .1961,ibid.123,233. 24. .1962,Mt.StromloMim.,No. 4. 23. .1962,MonthlyNoticesRoy.Astron. Soc.124,189. 21. .1959,ToulouseAnn.27,47. 20. Bouigue,R.1959,HauteProv.Publ. 4,52. 18. Blanco,V.M.,Demers,S.,Douglass,G.C.,andFitzGerald,M.P. 17. .1955,Astrophys.J.122,434. 16. Blanco,V.M.1954,Astron.J.59,396. 15. Bidelman,W.P.,andMcKellar,A.1957,ibid.69,31. 14. Bidelman,W.P.,andBöhm,K-H.1955,Publ.Astron.Soc.Pacific 13. .1969(unpublished). 11. .1957,ibid.69,147. 19. Blaauw,A.,andHiltner,W.A.1959, Astrophys.J.130,69. 12. .1957,ibid.69,326. 10. .1954,Publ.Astron.Soc.Pacific66,249. 9. .1954,Astrophys.J.Suppl.1,175. 4. Beer,A.1964,MonthlyNoticesRoy.Astron.Soc.128,261. 2. Argue,A.N.1963,MonthlyNoticesRoy.Astron.Soc.125,557. 8. .1951,Astrophys.J.113,304. 6. Bidelman,W.P.1947,Astrophys.J.105,492. 7. .1950,Astron.J.55,1965. 5. Beer,A.,Redman,R.O.,andYates,G.1954,Mem.Roy.Astron. 3. Arp,H.C.1958,Astron.J.63,118. 1. Abt,H.A.,andBautz,L.P.1963,Astrojphys.J.138,1002. groups inthedirectionofAraassociation.Sincesupergiants solutions. HD 17971F5la HD 11544G2Ib HD 12882B5la HD 12399G5la HD 38247G8lab HD 18391GOla HD 207119K5Ib HD 207991K5Ib HD 171635F7Ib HD 206859G5lb HD 179784G5lb HD 46559B8I HD 45829KOlab HD 202314G2Ib HD 207089K0lb HD 74395G2Ib HD 48616F5Ib +42°1288 B8Ib HD 164865B9lab HD 163506F2la HD 100198A0la 1 1 Astron. Soc.121,263. 67, 119. Soc. 67,1. 1968, Publ.U.S.NavalObs.(II),21, ß AqrGOlb a CapG3lb r} LeoA0Ib ß DraG2Ib £ AurMOlab o: AqrG2lb a LepF0Ib e DelK3lb © American Astronomical Society • Provided by theNASA Astrophysics Data System T CapG4lb a CarF0Ib PegK2lb t Star Sp.typelbVB—rVel.Phot. 233.3 21.04.61 219.5 50.83.53 208.8 -2.78.15 203.5 -1.16.63 137.7 1.27.75 221.0 -25.22.58 209.3 -0.16.85 131.6 -5.26.82 131.0 3.47.50 130.7 2.57.49 188.7 -5.46.61 293.4 0.16.37 261.2 -25.3-0.7 166.7 4.09.48 165.3 16.24.97 139.4 -1.06.89 48.8 2.16.69 48.0 -37.92.88 31.1 -24.74.23 27.0 -43.63.74 94.9 _4.46.87 86.2 25.04.78 59.9 -42.12.93 58.0 -16.65.72 96.6 -0.86.42 72.0 -26.54.32 65.6 -31.52.40 79.6 33.32.80 76.7 -12.96.18 51.4 23.25.45 76.7 -22.85.29 KINEMATICS OFSUPERGIANTS 6.2 -1.27.65 References toTableI Table I(supplement) Notes toTableI -0.04 0.562.9 5. ThedesignationCPD—59°4459(=HD111194)givenbyHernandez 41. Heard,J.F.1956,Publ.DavidDunlapObs.2,4. 49. Hogg,A.R.1958,Mt.StromloMim. (No.2),16. 48. .1964,CatalogueofBrightStars (YaleUniversityObservatory, 46. Hiltner,W.A.,andJohnson,H.L. 1956,ibid.124,367. 45. Hiltner,W.A.,andIriarte,B.1955, Astrophys.J.122,185. 44. .1956,Astrophys.J.Suppl.2, 389. 42. Hernandez,C.1960,Publ.Astron. Soc.Pacific72,416. 40. Feinstein,A.1969,MonthlyNoticesRoy.Astron.Soc.143,273. 47. Hoffleit,D.1956,ibid.124,61. 43. Hiltner,W.A.1951,Astrophys.J. 114,241. 39. .1957,ibid.68,1. 29. Cousings,A.W.J.,andStoy,R.H.1963,ibid.64, 27. Buscombe,W.,andKennedy,P.Morris1965,ibid.130,281. 50. Humphreys,R.M.1970,Astrophys. J.(tobepublished). 38. Feast,M.W.,Thackeray,A.D.,andWesselink,J.1955,ibid. 37. Feast,M.W.,andThackeray,A.D.1963,Mem.Roy.Astron.Soc. 36. Feast,M.W.,Stoy,R.H.,Thackeray,A.D.,andWesselink,J. 34. Feast,M.W.1958,MonthlyNoticesRoy.Astron.Soc.118,618. 32. Eggen,O.J.1955,Astron.60,65. 28. Cousins,A.W.J.,Eggen,O.andStoy,R.H.1961,Roy.Obs. 35. .1963,f&fd.126,11. 33. .1963,ibid.68,483. 31. Crawford,D.,Limber,D.N.,Mendoza,V.E.,Schulte, 30. Crawford,D.L.1963,Astrophys.J.137,530. 0.97 0.25-20.0 0.98 0.267.5 0.83 0.266.5 0.38 4.16 0.61 0.65-12.4 0.84 2.09 0.84 0.6631.4 0.38 5.88 0.35 5.13-28.5 0.21 0.2824.7 0.79 1.05 0.61 20.0 1.39 1.12 2.07 0.714.7 1.07 0.44-25.9 1.00 0.423.0 0.52 2.46 0.16 0.0620.5 1.06 6.02 1.15 1.23 1.12 0.96-4.5 1.18 0.46-22.3 1.53 0:86-14.4 1.79 4.26 1.60 1.90+36: 1.55 0.154.7 1.58 1.86 1.62 1.55 1.91 0.89 1.38 0.60-11.9 1.95 1.70 that regionseemedtofallintothreegroupsaccordingdistance,they have beenlistedinthatformthistable.Thetwomoredistantgroups correct nameiskCrucisstarD. (1960) isincorrectfortheMsupergiantinNGC4755.Thisstar’s (A andB)maynotberealassociations. 67, 57. 68, 173. Steinman, H.,andSwibart,T.1955,ibid.121,24. New Haven,Conn.). Bull. 25. 1961, ibid.122,239. 44,66 44 8 9998 8,68 3,29,5298 60, 853,29,5298 8,68 2,5298 8 2,526298 8,68 3,29,5298 68 3,29,5298 44,66 44 68 52,9998 8,68 52,54,5698 68 29,5298 8,68 1898 11 99 60, 1019998 68 49,5298 12 99 66 5298 44,66 4498 12 99 11 99 11 99 100 1898 24 4998 12 99 16 98 12 9998 102 71 18 11 99 12 99 11 99 References 613 1970AJ 75. . 602H 11o 614 Orion armmaybeaninterarmfeature.Itispossible into thethirdquadrant.Theanticenterregionis few knownluminoussupergiantsandyoungclusters notably devoidofhigh-luminositystars.Therearea that thespuronOrionarmextendingtoward Sagittarius armsastwoseparatefeatures.However,the anticenter wouldeventuallyjoinwiththePerseusarm at greaterlongitudesifthePerseusarmcouldbetraced the suninthirdquadrant.InbothFigs.1and2 that maybeindicativeofaspiralfeature3-4kpcfrom sun extendingfroml=330-30°. there isevidenceforaninnerarmabout3kpcfromthe equation ofdifferentialrotationisnotadequatesince lb supergiantsearlierthanspectral typeB5;09-B5,•;B5-A5, O. Possibleoutlinesforthespiral features arealsoshown. O ;A5-K5,AandK5-M,+:The sun’spositionisindicatedby Fig. 1.Thespacedistributionofthe laandlabsupergiants 60. Kron,G.E.1958,ibid.70,561. 56. Johnson,H.L.,andMorgan,W.1953,Astrophys.J.117,313. 53. Jaschek,M.,andC.1960,Publ.Astron.Soc.Pacific72,500. 52. Iriarte,B.,Johnson,H.L.,Mitchell,R.I.,andWisniewski,W.K. 51. .1970(thispaper). For thisanalysisthefirst-orderapproximationto 63. Lyngâ,G.1964,LundMedd.,Ser.II,No.139. 61. Lake,R.1962,MonthlyNotesAstron.Soc.S.Africa21,56. 58. Keenan,P.C.1942,ibid.95,462. 57. .1955,ibid.122,429. 55. .1967,Astrophys.J.149,345. 54. Johnson,H.L.1955,Ann.d'Astrophys.18,212. 69. Morgan,W.W.,Whitford,A.E.,andCode,D.1953,ibid.118, 68. Morgan,W.W.,andRoman,N.G.1950,ibid.112,361. 67. Morgan,W.W.,Gonzalez,G.,andG.1953,Astrophys.J. 65. Merrill,P.W.,andWilson,O.C.1956,ibid.123,392. 64. Mendoza,V.E.,1958,Astrophys.J.128,207. 62. Ljunggren,G.,andOja,T.1964,ArkivAstron.3,439. 59. Keenan,P.C.,andWright,J.A.1957,Publ.Astron.Soc.Pacific69, 66. Morgan,W.W.,Code,A.D.,andWhitford,E.1955,Astrophys. 72. Münch,G.1957,Astrophys.J.125,42. 71. Morris,P.M.1961,MonthlyNoticesRoy.Astron.Soc.122,325. 70. Moore,J.H.,andPaddock,G.F.1950,ibid.112,48. 77. Pesch,P.1959,ibid.130,764. 76. Osawa,K.1959,ibid.130,159. 75. Nassau,J.J.,andMorgan,W.1952,ibid.115,475. 74. .1964,ibid.140,162. 73. Münch,G.,andL.1960,ibid.131,253. © American Astronomical Society • Provided by theNASA Astrophysics Data System J. Suppl.2,41. 457. 318. 1965, SkyandTelescope30,21. 118, 323. IV. THEKINEMATICS R. M.HUMPHREYS 2 Defining twoconstants, many ofthesupergiantsaremorethan2kpcfrom sun, andasecond-orderapproximationhasbeenused. where AiisthefamiliarOort’sconstantA,equation of differentialrotationbecomes and thecompleteequationforradialvelocityofa star is is indicatedbyo.Thespiralfeatures areoutlined. V= —2Ai(R—Ro)sinlcosb2A2(R—Rq) 102. Walker,M.F.1957,ibid.125,636. 101. Roman,N.G.1952,Astrophys.J.116,122. 100. Bidelman,W.P.1957,Publ.Astron.Soc.Pacific69,573. 80. 1961,Roy.Obs.CapeMim.,No.12. 85. Stebbins,J.,andKron,G.E.1956,ibid.123,440. 83. Sharpless,S.1966,I.A.U.SymP.No.24,K.Loden,L.O. 82. Schild,R.E.1967,ibid.148,449. 81. Rubin,V.C.1965,Astrophys.J.142,934. 88. Thackeray,A.D.,andWesselink,J.1965,MonthlyNoticesRoy. 87. .1963,ibid.22,157. 86. Stoy,R.H.1959,MonthlyNotesAstron.Soc.S.Africa18,136. 84. Smith,E.vanP.1956,Astrophys.J.124,43. 98. Wilson,R.E.1953,GeneralCatalogueofStellarRadialVelocities 91. Vaucouleurs,A.de1957,MonthlyNoticesRoy.Astron.Soc.117,449. 89. Thackeray,A.D.,Wesselink,J.,andHarding,G.1962,ibid. 79. Petrie,R.M.,andPearce,J.A.1962,Publ.DominionAstrophys. 99. Argue,A.N.1966,MonthlyNoticesRoy.Astron.Soc.133,475. 97. Wildey,R.L.1964,Astrophys.J.Suppl.8,439. 96. Whiteoak,J.B.1962,MonthlyNoticesRoy.Astron.Soc.125,105. 95. Westerlund,B.1959,Publ.Astron.Soc.Pacific71,156. 94. Weaver,H.F.1953,Astron.J.58,177. 93. Walraven,T.,andJ.N.1960,Bull.Astron.Inst.Neth. 92. Wallerstein,G.1958,Publ.Astron.Soc.Pacific70,479. 90. Tolbert,C.R.1964,Astrophys.J.139,1105. 78. .I960,ibid.132,689. 2 FG=-2[^(I?-I?o)+^2(^-^o)]sinZcos¿, (5) 1 Astron. Soc.131,121. and U.Sinnerstad,Eds.(AcademicPress,LondonNewYork), Obs. 12,1. p. 345. 124, 445. 15, 67. (Carnegie InstitutionofWashington,D.C.). +7/0 coslb—vsinb—w^b-\~K,(6) Q 1970AJ 75. . 602H no motion. AKtermhasalsobeenincludedtoaccountfor including velocitycomponentsduetothelocalsolar motions. systematic motionsoflargestellargroups,forsystem- atic errorsinthevelocities,andforpossibleexpansion following criteria:(i)Galacticlatitude;|ô|<10,(ii) in theanalysisofkinematicsonbasis reliable velocity.Radialvelocitiesassignedaqualityof minations ofavelocitywereavailable,they velocity wasofcomparablequality.Ifseveraldeter- a well-determineddistance,and(iii)reasonably velocity, spectraltype,orGalacticlongitude.Several rotation constants.Thevelocitydispersion