198 8ApJS. . .68. . .91R frared AstronomicalSatellite(IRAS)all-skysurvey(Chester nology. stitute ofTechnology. in theIRASPointSourceCatalog(1985,hereafterPSC) and IRAS detectordata,ofthelargegalaxiesforwhichentries ments theexistingIRAScatalogs,providingglobalfluxdensi- brightness profileplotsofthedetectedgalaxiesandinfrared isophotal diametersgreaterthan8'.“Total”fluxdensities at IRAS resolution.Thecatalogsampleconsistsofallgalaxies infrared emissionrelatestostellarprocessesonagalactic possible infraredemittingsourcestotheglobalemis- structure wasobservedispresented.Thiscatalogcomple- surface brightnesscontourmapsofthosegalaxiesforwhich observed byIRAS,whicharefistedintheSecondReference cally largegalaxieslikelytoshowstructuralfeaturesatthe important fordeterminingthecontributionofvarious ties, obtainedfromspatialmapsconstructedco-added 12, 25,60,and100/imarereported,anatlasofinfrared and Corwin1976,hereafterRC2)withapparentblue-light sands ofunresolvedIRASgalaxydetections. scale. Clearly,theseresultsarevitalforinterpretingthethou- sion ofexternalgalaxiesandfordetermininghowtheglobal data forcomparingthespatialdistributionofmid-and observations oftheseopticallylargegalaxiespresentunique © 1988.TheAmericanAstronomicalSociety.Allrightsreserved.PrintedinU.S.A. far-infrared emissionwiththedistributionsofstarsand The AstrophysicalJournalSupplementSeries,68:91-127,1988October the gaswithinavarietyofgalacticdisks.Suchstudiesare arcminute angularresolutionoftheIRASbeam.The apparent opticalextentstoshowspatialstructureatthe 1985), about100ofthenearestgalaxieshavelargeenough Catalogue ofBrightGalaxies(deVaucouleurs,de 4 2 3 1 Sterrewacht, Leiden. DivisionofPhysics,Mathematics, andAstronomy,CaliforniaIn- Universiteit vanAmsterdam. InfraredProcessingandAnalysis Center, CaliforniaInstituteofTech- This catalogpresentstheIRASobservationsofopti- Of theapproximately22,000galaxiesdetectedinIn- Subject headings:galaxies:photometry—structureinfrared:sources jam, obtainedfromspatialmapsconstructedco-addedIRASdetectordata,arereported. Bright Galaxieswithblue-lightisophotaldiametersgreaterthan8'.“Total”fluxdensitiesat12,25,60,and100 based onthedegreeofcentralconcentrationandspatialstructure60jLtmemissionbest-resolved galaxies isproposed.The60\imandblue-lightisophotaldiametersofthelargestarecompared. galaxies forwhichstructuralfeatureswereresolvedaredisplayedinanatlas.Afar-infraredclassificationscheme A catalogispresentedoftheIRASobservations85galaxieslistedinSecondReferenceCatalogue Infrared brightnessprofilesofthedetectedgalaxiesandinfraredsurfacecontourmaps © American Astronomical Society • Provided by theNASA Astrophysics Data System A CATALOGOFIRASOBSERVATIONSLARGEOPTICALGALAXIES 1,2 W. Rice,CarolJ.Lonsdale,B.T.Soifer,G.Neugebauer,E.L.Kopan, I. INTRODUCTION 134 Lawrence A.Lloyd,T.deJong,andH.J.Habing Received 1987June22;accepted1988January11 ABSTRACT 91 brackets, asreportedinRC2. Themorphologicalclassification fisted incolumn(8).TheRC2 apparentbluefightmajor(D) for galaxiesnotcontainedin RSA,themorphologicaltype,in catalog ofSandageandTammann (1981,hereafterRSA)or, (equinox 1950)asfistedinRC2.TheGalacticcoordinates of optically determinedequatorialcoordinatesofthegalaxy An alternatedesignation—theMessier(M)catalognumber, NGC (N),IC(I),oranonymouscoordinate(A)designation. Table 1.Column(1)isthegalaxyRC2identification—the photal majordiameters(D)greaterthan8'.Allbutoneof the galaxyrevisedHubblemorphologicaltypeasfistedin the designation (vandenBergh1959,1966)ofunnameddwarf observed byIRAS.The85galaxiesarepresented in with blue-lightisophotaldiametersgreaterthan8'asfistedin ing mapsofthebest-resolvedgalaxies,ispresentedin§V.A densities aretotalemissionmeasurementsforsourcessmaller as codedinRC2aTindex andbarparameterletteris the galaxyaregivenincolumns(5)and(6).Column(7)gives systems—is givenincolumn(2).Columns(3)and(4)are the other catalogsarediscussedintheAppendix. elsewhere (Rice1988,hereafterPaperII).Additionalgalaxies brief preliminaryanalysisofthecatalogisgivenin§VI.A infrared emissionpropertiesofthesample.Theatlas,includ- emission andcolorsofthelargegalaxieswillbepresented detailed studyofthespatialdistributioninfrared the traditionalname,orDavidDunlapObservatory (D) these galaxies,thedE5pecgalaxyA1110+22(=LeoB),was the totalemissionforsourceslessthan~8'(FWHM).] than -2'(FWHM),whiletheSSSCfluxdensitiesrepresent SSSC) underestimatethetotalfluxdensity.[ThePSC the IRASSmallScaleStructuresCatalog(1986,hereafter scribed in§II.InIIIwedescribetheIliASobservations, tion IVreportsthetotalIRASfluxdensitiesandintegrated the dataprocessing,andmeasurementtechniques.Sec- 25 25 Eighty-six galaxiesinRC2arelistedwithblue-fightiso- The selectionofthe“largeopticalgalaxy”sampleisde- II. THELARGEOPTICALGALAXYSAMPLE 198 8ApJS. . .68. . .91R -1 92 in columns(9)and(10).Column(11)isthedistance corrected, ifnecessary,usingthepreceptsinRSA,anda megaparsecs basedonRSAvelocitiesanddistancemoduli Hubble constantof=50kmsMpc. (RSA, Table2),orvelocitieslistedinthesourcescitedand and minorisophotaldiametersinarcminutesaregiven American Astronomical Society •Provided bythe NASA Astrophysics Data System N3109 N3034 N3031 N2997 N2903 N2841 N2683 N2403 A0524- 69LMC N1560 N1448 N3198 A1005+12 N3115 1342 N1365 N1313 N1291 N134 N55 N45 N3623 N3621 N3556 N3521 12574 N1097 A0237—34 FornaxSys. N1023 N925 N891 N660 N628 M74 N224 N205 N185 N147 N3628 N3627 N598 M33 11613 D8 N300 A0051-73 N253 N247 1 Name R.A.(1950)Dec.IbTypeTD25¿25(Mpc) RC2 OtherDistance* (1) (2)(3)(4)(5)(6)(7)(8)(9)(10)(11) Leo I D236 D223 SMC M82 M81 M66 M65 M31 D81 D3 21 hn 10 00 10 05 10 02 10 24 10 16 11 17 11 15 11 08 11 03 11 17 11 16 Large OpticalGalaxiesObservedintheIRASMission 9 29 9 18 9 51 9 51 9 43 8 49 0 12 0l 0 30 0 27 2 44 2 37 2 37 0 52 0 51 0 45 0 44 0 40 0 37 0 36 2 24 2 19 1 34 1 40 1 31 1 02 18 31.8 44.4 ■ 46.8 ■ 40.8 03.0 00.0 03.6 40.2 46.2 30.0 27.6 ■ 20.4 34.8 34.8 42.0 52.8 57.6 52.2 38.9 28.8 36.6 50.4 00.6 00.0 24.0 39.6 38.4 50.4 24.6 21.0 03.0 00.0 07.8 38.4 27.6 54.0 31.2 39.6 15.6 11.4 18.6 16.2 16.8 13.2 11.4 0,,/ -39 2800 —232736 -21 0200 -33 3200 -73 0600 -25 3342 -32 3224 -07 2830 -25 5448 -30 5736 -69 4800 -44 4800 -36 18 -66 4042 -41 1830 -30 2906 -34 4424 -37 5724 65 42 69 54 69 18 21 4312 67 5624 68 4006 45 4800 51 1118 33 3630 71 4612 55 5642 42 0712 40 5942 41 2454 48 0342 48 13 12 33 38 5054 33 2124 30 2354 13 5206 13 1548 13 2154 13 2318 15 3136 0 1412 1 5100 RICE ETAL. 208.7 226.0 247.8 262.1 262.6 280.5 ■ 281.2 255.5 251.5 • 238.0 240.8 242.0 241.3 283 .4 247 .6 338.2 332 .9 141.4 142.1 166.9 190.5 150.6 226.9 237.3 302 .8 140.2 171.2 138.4 299 .2 148.3 138.2 121.2 120.8 119.8 145 .0 144 .9 140.4 113.9 120.7 141.6 138 .6 133 .6 129.7 TABLE 1 97.6 55°9 -44.3 -88.0 -83.6 -21.6 -21.1 -14.5 -14.3 -82.4 -75.7 -80° 7 -32.9 -51.4 -54.6 -44.6 -57.0 -64.7 -65.7 -19.1 -25.2 -17.4 -47.4 -45.7 -31.3 -60.6 -79.4 pointed observations(Neugebaueretal1984)wheneverpos- sible. Thepointedobservationsweremulti-legrasterpattern sample galaxieshavebeentakenfromthehigh-sensitivity 40.6 49.1 40.9 44.5 44.1 64.2 43.6 23.1 38.8 64.8 64.4 26.1 56.3 52.8 54.8 36.8 29.2 16.8 16.0 10.6 The IRASdatausedtoconstructspatialmapsofthe Ims Sc(rs) Sm Amorphous Sc(s) Sb Sb SBm Sc(s) Sc(s) Sb(s) SO, (7) Sb(r) Sc(s) Sc(s) Sc: Sbc Sb(s) Sa(s) SBb(s) SBc(s) dE3 pec dE5 SBa Sbc(s) Sc Scd(s) [S(rs)cd] RSBbc(rs) Sc(s) Sc(s) Sb S0/E5 pec [Sm(s)) [E3] [Sd(s)] SB0j(5) SBc(s) Sb Sc(s) Im Sc(s) Sc [E0p] [Sa] l()] III. IRASOBSERVATIONSANDDATAREDUCTION -4 -3 -5 -5 -5 -5 —2B 10X 4X 4X 9X 6X 6A 6X 9B 2A 5X 3A 3A 9B 7A 7 A 6B 3 3X 5B 0B 4X 3B 8A 7B 3A 9B IX 3B 7X 5A 9B 5X 7X 5A 5A 7A IB 0: 645.6 549.5 281.8 158.5 177.8 25.7 11.2 12.6 12.3 10.7 14.4 17.8 11.0 17.8 61.6 32.3 10.0 10.0 25.1 14.8 10.5 19.9 17.4 11.5 12.9 13.5 19.9 10.2 12.0 19.9 9.3 2.5 9.8 9.5 8.1 8.1 3.8 9.8 8.3 8.3 8.1 8.7 8.3 8.5 9.3 9.8 9.1 8.1 8Í1 8.7 63.1 14.1 17.4 38.9 13.8 11.2 14.8 4.6 6.4 6.6 4.4 6.5 3.7 3.2 3.5 6.6 2.5 5.0 5.9 8.3 2.0 5.5 9.1 3.6 3.3 6.6 6.0 9.8 9.8 6.4 4.1 9.5 8.1 2.6 5Í7 1.8 3.3 2.8 7.4 7.4 2 1 1 1 0.057 1 x 20.76 31.24 25.68 1 0.078 15.98 31.88 12.54 14.04 14.28 11.86 13.50 15.80 14.76 14.38 10.66 17.90 15.84 15.58 19.64Í) 17.22 0.12Í) 9.44 4.68Í) 4.68Í) 2.58 3.57 3.57 7.98 3.57 3.50Í) 8.74 8.70 5.22 0.16() 0.73 0.73 0.73 0.73 0.90 4.17 3.16 0.85Í) 3.16 2.40 Vol. 68 198 8ApJS. . .68. . .91R No. 2,1988 pointed observationdata. co-added all-skysurveydata. Thecoverageofthesefieldswas servations werenotperformed, mapswereconstructedfrom scans). Thesedatawereprocessed inthesamewayas a minimumoffoursurvey scans(or2hoursconfirming objects. of thesky(typically1?5X0?5)centeredontargeted scans oftheIRASsurveydetectorarraycoveringsmallareas For the36galaxiesofsampleforwhichpointedob- © American Astronomical Society • Provided by theNASA Astrophysics Data System e N4395 N4258 N4244 N4236 N4216 N4192 N3718 N 5194 N5170 N5128 N5102 N5055 N5033 N4945 N4826 N4762 N4736 N4725 N4656 N4631 N4594 N4565 N4559 N4517 N4472 N4438 N5457 N5236 N4569 A1719+57 DracoSys. N5907 N6946 N6744 A1508+67 15201 N6822 N7640 N7331 N7793 A2359-15 c Name R.A.(1950)Dec.IbTypeTD2&¿25(Mpc) Optical positionfromRSA. RC2 OtherDistance Î*A1110+22 (=LeoB),adE5pecgalaxywithanRC2diameterof14'4, wasnotobservedintheIRASmission. (1) (2)(3)(4)(5)(6)(7)(8)(9)(10)(11) Distance sources:RSA;(1)Kraan-KortewegandTammann1979;(2) Huchraetal.1983. Cen A M104 M101 WLM U Mi D209 M63 M64 M94 M98 M51 M90 M49 M83 IRAS OBSERVATIONSOFLARGEOPTICALGALAXIES hms 12 16 12 14 12 13 12 1115.6 ll294.8 20 33 13 27 13 22 13 19 13 13 11 13 02 12 54 12 50 12 48 12 48 12 41 12 39 12 33 12 33 12 30 12 27 12 25 12 23 12 14 13 27 12 37 12 34 22 34 22 17 17 19 15 08 14 01 13 34 23 19 15 14 23 59 23 55 19 42 19 05 45.6 07.2 - 07.2 - 08.4 00.0 40.8 21.0 35.4 31.8 - 31.8 51.6 29.4 59.4 31.8 - 25.2 31.8 22.8 - 29.4 01.7 27.6 47.9 07.1 36.6 16.8 12.0 14.4 13.8 19.2 47.2 18.6 19.8 43.1 55.0 15.2 12.0 10.2 ■ 23.9 15.5 -15 4436 -32 5206 -46 1700 -14 5542 -63 5618 -29 3648 -17 4224 -42 4530 -36 2206 -49 1200 -11 2100 41 2336 47 3500 47 2718 42 1748 69 4500 53°20'42" 36 5148 21 5706 25 4630 32 2630 32 48 26 1536 28 1406 33 4930 38 0512 67 2300 54 3536 57 30 56 3024 13 2524 15 1048 11 3006 13 2624 13 1706 40 3412 59 00 34 0930 0 2318 8 1642 TABLE 1—Continued 270.5 286.9 265 .4 304.3 295.1 298.5 230.8 292 .7 280.3 305.3 315.7 288.5 315.7 309.5 309.7 154.6 147°0 123.4 142.8 162.1 138.3 127.4 314.6 140.3 198 .4 104.9 106.0 332.2 350.2 105 .0 102.0 105 .2 98.1 91.6 95.7 86.4 93.7 25.3 75.8 4.5 e -73.6 -77.2 -18.9 -20.7 -54.9 -18 .4 -26.1 60 2 68.8 47.4 77.2 73.7 75.0 76.0 62.6 70.2 74.8 68.6 44.0 25.8 74.3 74.1 88.4 84.7 84.2 51.1 75.6 86.4 86.5 81.5 79.4 84.4 44.8 59.8 32.0 34.7 51.1 13.3 19.4 11.7 refers tothedirectionorthogonalscanningdirection. direction oftheIRAStelescopeandcross-scan IRAS ExplanatorySupplement (1985,hereafterIRASSupple- from thedetectordatastreams aredescribedindetailthe flux surfacebrightnessmaps andpoint-sourcefilteredmaps In thefollowing,in-scandirectionreferstoscanning The variousprocessingsteps involvedinconstructingtotal + ° a)DataProcessing Sb(s) Scd Sb(s) Sb: Sa pec? Sb Sc(s) Sc El/S0i(l) Sb Sd SBd S0!(5) Sbc(s) Sc SOxflO) RSab(s) Sb/SBb(r) Im Sc Sa/Sb- Sab(s) Sbc(s) Sb: SO+S pec Sbc(s) Sab(s) Sc(s) SBc(s) Sc(s) Im Sbc(r) Sc Sb(rs) SBcd Sbc(s): [E0p] [E4] Sd(s) [Im(s)] — 3A -5 -2 -5 -5 —2B 10B 10B 4X 0A 9A 6A 4A 4A 6X 6A 3X 2X 6B 2A 2X 3A 6X 5A 5A 2A 9B 2X 8B 7B 1 6X 4X 5X 4A 5A IA 6B 8A 5B 39.8 32.3 26.9 10.9 10.9 12.9 18.2 16.2 18.6 12.3 10.5 19.9 13.8 15.1 16.2 10.5 10.2 10.9 18.2 11.2 12.3 10.9 10.2 15.5 10.7 10.7 10.2 9.5 9.3 9.3 8Í7 9.3 9.5 8.9 8.3 8.1 8.7 8.9 9.1 8.5 24.5 20.9 26.3 11.0 14.5 10.2 10.2 9.1 4Í5 4.4 4.1 4.9 7.9 3.3 4.7 5.0 2.5 6.9 2.2 3.1 7.6 5.4 3.3 2.8 7.4 3.9 7.7 3.5 5.6 9.7 9.5 4.0 4.3 1.6 1.9 4.2 6.6 1.3 2.5 1.8 1 21.64 21.88 23.34 23.42 21.88 21.88 21.88 25.70 21.88 21.88 0.095^) 0.090Í) 12.48 12.12 15.42 15.93 10.40 10.82 11.00 17.94 17.46 22.28 15.58 13.26 13.38 14.56 ,3.14 6.90 6.92 6.92 6.08 4.98 6.92 7.00 9.92 0.68 6.72 7.59 6.62 i.eo^ 93 198 8ApJS. . .68. . .91R zero mean,andremoved.Theprocesswasthenappliedtothe This valuewassubtractedfromthemaps.Residualfield emission wastakentobethemedianofmappixelvalues. was typicallylessthan-3timesthemapnoiselevelover the which thevariationofremainingbackgroundemission nique producedbetterresults.AUnearleast-squaresfitwas pixel rowsofthemap. maps. Thesewereremovedusingoneoftwotechniques.The gradients aslarge20timesthenoiselevelremainedin surface brightnessmapsduetodiffusezodiacalandGalactic point-source spatialfrequency wasapphedtothespatially ing annularaperturecenteredonthegalaxyimage,was sub- background, takentobethemeanintensitywithinanoutly- removed. computed foreachpixelcolumnofthemap.Thefitsexcluded first techniquewassimilartothede-strippingalgorithmde- pressed extendedstructure,resulted inamoresensitivemea- binned co-addeddetectordata. Thisprocessing,whichsup- (Low etal.1984),andfortheseanestimateofthelocal embedded inpatchesofGalacticinfrared“cirrus”emission entire fieldcoveredbythemap.Afewofgalaxieswere smoothed overtheentiremap,definedasurfacethatwas adjacent columnsacrossthemapwerecalculated,adjustedto scribed above.Themediandifferencesofthepixelvaluesin 94 POG, adigitalzero-sumbandpass filtercenteredontheIRAS filtered maps.Inthisprocessing, describedindetailthe specified threshold.Theparametersofthefittedlines, the pixelsofsourceemissionwithintensityvaluesabovea maps. used toremoveresidualphotometricartifacts(intensity et al1985,hereafterPOG).Here,wedescribethetechniques ment) andthePointedObservationProductsGuide(Young profiles wereadjustedtozeromeanandsubtractedfromthe producing across-scanoffsetprofileforeachband.The process wascontinuedacrossthefocal-planedetectorarray, if thatfailed,themedian,ofdifferenceswasidentifiedand nal tothetelescopescanningdirection(e.g.,Habingetal. stripes) andbackgroundemissionfromthesurfacebrightness surement ofthefluxdensities ofunresolvedsources. tracted fromthegalaxyaperturemeasurements. data. Thistechniquealsoremovedgrosscross-scanfieldgradi- used asanestimateoftheoffsetbetweendetectors.This of thepaireddetectorswerehistogrammedandmode,or, ents inthedata,alongwithbaselineoffsets. array. Thedifferencesbetweenadjacentspatialdatasamples streams ofadjacentwavelengthbanddetectorsthedetector 1984). Thisstripingwascorrectedbycomparingthedata the apparentintensityofsurfacebrightnessmapsorthogo- 10-15 timesthedatanoiselevelresultedindiscontinuities A firstestimateoftheunderlyingbackgroundlevelin The backgroundremovalprocessingresultedinmaps The datawerealsoprocessedtoproducepoint-source For mapswithcomplicatedbackgroundsanalternatetech- Baseline variationsinthedetectordataonorderof © American Astronomical Society • Provided by theNASA Astrophysics Data System b) Point-SourceFilteredMaps i) DetectorBaselineCorrections ii) BackgroundRemoval RICE ETAL. -2 -2 -2 -2 -2 point-source filteredmapsarereported. brightness mapfluxdensitymeasurements(<0.2Jy).For was forfaint12and25pmdetectionswithmarginalsurface was obtainedfromthesurfacebrightnessmaps.Anexception length maps,thetotalfluxdensityatalldetectedwavelengths peared extendedinanyoneofthesurfacebrightnesswave- brightness imageatalldetectedwavelengths.Ifasourceap- integrated fluxdensityofslightlyextendedsources.Forthis reason, thepoint-sourcefilteredmapmeasurementsweretaken these, thefluxdensitiesextractedfrommoresensitive as totalfluxdensitiesonlyforsourceswithapointlikesurface density measurementsofunresolvedsources,thepoint-source filtering canresultinasignificantunderestimationofthe pointed observationorall-skysurveyscanmapsofthegalaxy pm surfacebrightnessmapsconstructedfrompointedob- infrared 60pmsizeofthelargest infraredextendedgalaxies ing onthespatialextentobservedforgalaxysources.For levels ofthemapsconstructedfromsurveydataare11,16, fields. Themeannoiselevels(1a)ofthe12,25,60,and100 IRAS data,alongwiththeadequateremovalofbackground with theprofilesofstarIRC+10011,arepresentative radial profilesofthegalaxysurfacebrightnessimagesalong respectively. The selectionof25mlyarcminasthebrightnesslimit for ness mapsbysummingthemappixelintensityvalueswithin IRAS pointsource.Themeanhalf-powerwidthofthepoint- 30, and110mlyperbeam),respectively.Themeannoise servations are4.6,6.6,3.8,and7.2mlyarcmin(or18,26, emission iscontainedwithin theselectedbrightnesslimit. However, theagreementbetween theopticalsizeand emission fromthemapsusingtechniquesdescribedabove. determining thegalaxytotalinfraredemissionissomewhat 0'8 forthe12and25^mmaps,1'660/am source filteredmapsorthesurfacebrightnessmaps,depend- Furthermore, thesmallcontribution tothetotalemissionof arbitrary, sinceitisbasedontheoverallsensitivityof the than 25mlyarcmin,thebrighter3athresholdwasused. observation andco-addedsurveydatamaps,isapproximately source in-scanprofile,measuredfrombothco-addedpointed the IRASin-scanandcross-scandirectionswerecompared the sourcesforwhichalargeinfraredextentwasnotobvious, 8.5, and11mlyarcmin(45,64,68,160perbeam), to thisbrightnesslevel(see§ VIZ?) impliesthatthebulkof the galaxyimage.If3timesmapnoiselevelwasbrighter the 25mlyarcmin(-3-6a)brightnesslevelcontour of co-added mapscomposedofobservationswithalargerange the low-levelinfraredemission observedintheouterregions do notexist.Forthesemaps,theorientationofprofile of scanningangles,uniquein-scanandcross-scandirections approximately 5'foreachwavelengthmap.(Notethatin 3' forthe100pmmaps.Thecross-scanresolution(FWHM)is nent observationsofaco-addedmaphadscanningangles cuts wasbasedonthedominantscanningdirectionasde- that coincidedtowithin~20°.) termined bytheshapeofsources.Typically,compo- While thepoint-sourcefilteredmapsprovidebestflux The finalmapswereproducedbyco-addingtheindividual Total fluxdensitieswereobtainedfromeitherthepoint- Total fluxdensitieswereobtainedfromthesurfacebright- c) TotalFluxDensityMeasurements Vol. 68 198 8ApJS. . .68. . .91R No. 2,1988 brightness wavelengthmapovertheobservedinfraredextent ported upperlimitis3timesthenoiselevelofpoint-source noise levelofthesurfacebrightnesswavelengthmap,in- ness cutoff. of thegalaxiesisconsistentwithadoptedsurfacebright- obtained fromthelowersensitivitysurveydatamapswere in in thesurfacebrightnessmapsforpointlikesourcesobserved promised byuncertaintiesinthefrequencyresponseof possible underestimationsassumeanextendedinfraredemis- of thegalaxy.Similarly,nondetectionlow-leveldiffuse filtered wavelengthmapforpointlikesources,or3timesthe faintest 12and25pmsources(<2Jy),thefluxdensities tions, includingtheLMCandSMC.Exceptfor the structed forasubsetofthegalaxieswithpointedobserva- log forextendedgalaxiesshouldbeviewedwithcaution. extended at60and100pmcouldresultinanunderestimation emission at12and25pmforagalaxyobservedasmore for galaxiesnotdetectedinanyband. sources. Thesurfacebrightnessmap3alimitsarereported tegrated overtheIRASwavelengthbandbeam,forextended densities ofthefaintersourceswereasmuch50%lower agreement, withintheuncertainties,withvaluesobtained can causelargeintegratedfluxdensityerrors(-25%ormore) detectors asafunctionofsourcestrengthandundersampling density measurementsandupperlimitsreportedinthiscata- deferred toPaperII,andthefaint1225pmtotalflux emission atthevariousIRASwavelengthsissimilar.Thedata sion modelofgalaxiesinwhichthedistributiondiffuse of the“total”emissionatshorterwavelengths.Both source maybethesumofnoisepixelssurface from thepointedobservationmaps.Thesurveydatamap flux detectors, theuncertaintiesimproveto15%orbetterfor due todeadandnoisydetectors.Whiletheundersampling analysis todeterminethevalidityofthismodelhasbeen on thedepthofsurveycoverage. mixture ofdetectortracks(i.e.,co-addedsurveydata).For (i.e., targetedobjectsofpointedobservations)oralonga along tracksofthedetectorarraycontainingaberrant on theorderofcross-scandetectorsize)estimated extended sourceswithhalf-powerwidthsof4'ormore(i.e., than thepointedobservationmapmeasurements,depending uncertainties are-15%(POG).Thefluxdensity sources observedeitheralongthedetectorarrayprimetrack of pointsourcesextractedfromco-addedpointedobservation comparing thefluxdensitiesofstandardstarstoPSCvalues, and surveydatapoint-sourcefilteredmaps,determinedby are -10%. galaxies obtainedfromco-added mapsandthe“point-source” A moreappropriatelimitforanondetectionofanextended For galaxiesnotdetectedinawavelengthband,there- Co-added surveydatasurfacebrightnessmapswerecon- The photometricaccuracyofthesemeasurementsiscom- Table 2liststhe“total”IRAS fluxdensitiesofthesample © American Astronomical Society • Provided by theNASA Astrophysics Data System d) UpperLimitsandUncertainties a) TotalFluxDensities IV. THECATALOG IRAS OBSERVATIONSOFLARGEOPTICALGALAXIES l 261 in thenotestotable. IRAS Supplement(§V.H.5). listed inthePSC(Version1.0).Acolonfollowinganentry hereafter ExtragalacticCatalog]),theentrylistedisdetec- denotes amoderatequalityfluxdensityasdescribedin the generated manyPSCsources. not reportedfortheSMCandLMC;bothgalaxies input energydistributionwithfproportionaltov~.) IRAS point-sourcedetectionlistedinthePSC.Forgalaxies in thePSC,fluxdensitieshavebeencalculatedassumingan associated withmultiplePSCentries(cf.TableIIIA.2inthe background removal,thelowsensitivityofaco-addedsurvey tion nearestthegalaxyopticalcenter.PSCfluxdensitiesare data map,orforthereasonlistedinnotestotable.(As denotes alargerfluxdensityuncertaintybecauseofpoor Cataloged GalaxiesObservedintheIRASSurvey[1985, filtered mapisfollowedbya“P.”Acolonfollowinganentry of afaintextendedsourceobtainedfrompoint-source 60, and100pminjanskys(10“WmHz“)measured from co-addedmaps,asdescribedin§IIIc.Thefluxdensity v lated usingatwo-temperature thermalmodelfittothemea- survey scandata. “SS” denotesthatthemapswereconstructedfromall-sky galaxy mapswereconstructedfrompointedobservationdata; column entriesaredescribedbelow. The columnentriesofTable 3 aredescribedbelow. sured fluxdensitiesorlimits. Themodelisdescribedbelow. from theliterature.TheIRAS colorcorrectionswerecalcu- 60, and100pm,alongwiththe globalemissionofthegalaxies flux densitiesofthesegalaxiesreportedinthePSC.The at optical,near-infrared,and radiowavelengthscompiled which typeofIRASmapsthegalaxytotálfluxdensitiesor IRAS surfacebrightnessimagesofthegalaxiesandfrom upper limitswereobtained.Thecodeisgivenbelow. assigned toindicatethedegreeofspatialextentevidentin Special commentsforseveralofthegalaxiesarepresented Columns (9)-(12).—IRAS“point-source”fluxdensitiesas Column (8).—Designationofthepositionallyassociated maps integratedovertheIRASbeam. limits are3timesthenoiselevelofsurfacebrightness Columns (4)-(7).—IRAStotalfluxdensity,/„,at12,25, maps. or upperlimitswereobtainedfromthepoint-sourcefiltered source atalldetectedwavelengths;thetotalfluxdensities surface brightnessmaps. total fluxdensitiesorupperlimitswereobtainedfromthe one ormoreofthesurfacebrightnesswavelengthmaps; Table 3reportscolor-correctedtotalfluxdensitiesat12,25, Column (2).—Observationtype.“PO”denotesthatthe Column (1).—Galaxyname. Column (3).—Spatialextentcode.Alettercodehasbeen N—The galaxywasnotdetected;thereportedupper P—The galaxywasobservedasanunresolvedpoint E—The galaxywasobservedasanextendedsourcein b) GlobalEmissionProperties 95 198 8ApJS. . .68. . .91R d d N247 M31 N205 N185 N147 N134 N55 N45 SMC N253 N300 N628 M33 11613 N925 N891 N660 N1023 N1097 Fornax Sys.SS N1365 N1313 N1291 N2403 N1560 N2683 LMC N1448 1342 N3628 N3627 N3623 N3621 N2841 N3556 12574 N3198 Leo I N3115 N3109 M82 N2903 N3521 M81 N2997 bc Name ObsExt12/¿m25/zm60100¿zmIRAS (1) (2)(3)(4)(5)(6)(7)(8)(9)(10)(H)(12) 1 1 PO PO PO PO PO POÍ) PO PO PO PO PO PO PO PO PO PO PO PO PO PO POÍ) PO PO PO PO PO PO PO PO SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS American Astronomical Society •Provided bythe NASA Astrophysics Data System N E P E E E E E E N E E E E P E P E E E E N E E E E E E E P E E E E E E E E P E E E E E E 2781.90 163.23 <0.12 <0.05 <0.12 <0.06 <0.09 <0.12 <0.05 <0.05 <0.04 <0.04 67.03 55.84 32.69 23.66 66.61 0.04 0.53: 0.16 4.17 0.26 2.07 5.66 2.31 1.77 3.08 0.95 2.88 1.34 3.47 2.25 4.91 0.34 0.19 4.42 0.15P 0.93 0.89 0.90 5.86 3.13 3.34 5.00 0.18P 0.17P Total FluxDensity(Jy) 7824.19 270.18 155.65 107.71 285.03 <0.16 <0.06 <0.17 <0.03 <0.14 <0.09 <0.11 <0.21 <0.11 <0.05 <0.10 40.26 45.20 13.07 0.64: 2.67 6.25 0.66 7.78 7.05 7.70 0.19P 1.90 5.30 7.72 4.09 4.36 6.29 3.49 5.09 0.61 0.52 0.83 5.06 7.64 5.42 1.08 0.08P 0.07P 82917.00 6688.91 1271.32 998.73 419.65 536.18 255.96 1 <0.08 <0.13 <0.15 <0.06 <0.13 23.08 77.00 61.10 67.27 20.86 17.23 46.73 48.51 56.31 35.97 29.62 44.02 84.20 32.19 44.73 32.28 51.55 52.38 IRAS FluxDensities* 0.60 0.31 7.93 7.65 1.62 1.42 2.99 6.46 9.92 2.41 3.41 4.41 2.15 8.33 1.76 TABLE 2 184686.69 15021.93 96 2928.40 1256.43 1861.67 1351.09 174.09 661.68 198.63 104.89 122.17 144.96 116.34 124.80 185.40 148.49 147.36 174.02 <0.36 <0.30 <0.43 <0.30 <0.23 61.18 65.64 74.45 27.32 90.12 26.68 92.00 80.77 34.07 15.27 10.62: 34.02 85.14 24.21 10.13 17.69 4.99 3.78 3.69 1.93 5.32 7.97 00376+4124 <0.25<0.24<0.59 00362+4803 <0.29<0.25<0.44 00278-3331 1.391.9719.02 00125-3928 0.56:1.7730.96 00115-2327 <0.25<0.45 01310+3024 0.49 00523-3756 <0.99<0.78<1.10 00450-2533 20.52117.08758.62 00446-2101 <0.94<0.25<0.78 00400+4059 1.15:0.75:7.53 01340+1532 <0.25 01025+0153 <1.56 02243+3321 <0.25 02193+4207 0.93 01403+1323 2.02 03154-4117 <0.28 03176-6640 <0.25 02441-3029 1.85 03317-3618 3.22 07321+6543 04271+7146 <0.25 03428-4448 0.64 03419+6756 3.80 11176+1351 2.61 11176+1315 0.72: 09517+6954 53.21 09293+2143 0.86 09185+5111 08495+3336 11163+1322 <0.25 11158-3232 0.60: 11085+5556 0.61 09514+6918 0.67 11032+0014 <0.98 10251+6843 <0.30 10168+4548 <0.25 <0.25 <0.25 <0.28 PSC FluxDensity(Jy) 273.98 <0.37 <0.29 <0.40 <0.34 <0.25 <0.25 <0.24 <0.25 <0.25 <0.25 11.13 18.76 4.67: 0.85: 0.92: 0.71 7.12 1.37: 0.46 0.57 0.69 5.83 0.75 1.80 2.33 1.30 1167.76 33.69: 64.99 48.03 34.08 45.49 23.26 26.97 77.75 13.66 27.93 102.64 85.15 10.23 11.46 9.93 2.95 2.82 2.03 1.01 4.79 0.87 3.66 6.88 2.41 7.92 1.09 1.68 1044.83 1145.11 <23.79 146.28 102.38 101.73 104.20 125.97 139.94 73.33: 53.33 14.37: 50.74 60.13 11.78 83.74 30.15 82.53 24.02 26.22 11.90 12.92 25.21 54.65 14.33 13.51 6.07 2.11 2.75 8.43 3.10 2.64 2.55 4.09 5.56 198 8ApJS. . .68. . .91R d N4216 N4192 N3718 data. reported. N4244 N4236 knots southeastofthenucleus. been removed(cf.Schweringand Israel 1987). maps. EntriesfollowedbyPweremeasuredfrompoint-sourcefiltered maps.P—galaxywasobservedasan“unresolved”source; are meanmeasurementsfromtwosetsofPOmapsandonesetSS mapsforeachgalaxy.(2)MapsconstructedfromsinglePO N4395 N4258 the totalfluxdensitieswereobtainedfrompoint-sourcefilteredmaps. N—galaxywasnotdetected. N4517 N4472 N4438 N4559 N4569 N4565 N4656 N4631 N4594 N4736 N4725 N4762 N4826 N5033 N5170 N5128 N5102 N5055 N4945 WLM N7640 N7331 M83 M51 N7793 15201 N6946 U Mi M101 N6822 N6744 N5907 Draco Sys. b d c a l bc Observation type:Mapswereconstructedfrompointedobservations (PO)orall-skysurveyscans(SS).(1)LMCandSMCdata N2997, N3109,andN4258werenotcoveredintheall-skysurveybut werethetargetsofpointedobservations. Extent codekey:E—galaxywasobservedasanextendedsource;the totalfluxdensitieswereobtainedfromsurfacebrightness Flux densitieshavebeencalculatedassuminganinputenergydistribution proportionaltov~.Version1.0PSCvaluesare N147.—Heavy cirrusinfield. N45.—Nearby backgroundgalaxiesdetectedat3alevelinthe60and 100jammaps. 11613.—Prominent emissionfrom cluster ofHnregionsnortheastthenucleusandlow-levelemission coincidentwithoptical SMC.—Integrated emissionwithin 3°of0051.00-7306.0;the12and25jamemissionforeground sourceNGC104has N185.—Heavy cirrusinfield;100 jam sourcepossiblyconfusedduetocirrus. Name ObsExt (1) (2)(3) 2 2 PO PO PO PO PO PO PO SS SS SS PO PO SS PO SS SS PO() PO PO E PO PO PO PO PO PO PO<) E SS SS © American Astronomical Society • Provided by theNASA Astrophysics Data System SS SS SS SS SS SS SS SS SS SS SS SS E N E p E E P E E E E E E E E E P E E N P E E E N E E E E E E E E E E E P E 12 firn <0.05 <0.12 <0.11 <0.13 <0.12 <0.10 <0.06 <0.04 23.65 23.03 26.28 12.13 11.02: (4) 0.15 0.65: 0.17 2.25 0.61: 0.49: 0.75: 0.74: 0.11P 4.77 0.32: 5.48 0.14 1.53 0.10P 3.36 0.25 6.20 0.15 5.56 1.71 2.86 1.38 1.54 0.16P 0.15P 1.22 Total FluxDensity(Jy) 25 /¿m <0.20 <0.07 <0.15 <0.21 <0.20 <0.15 <0.13 <0.10 <0.14 <0.08 <0.05 <0.16 43.28 47.72 21.18 30.74 17.47: 11.78 (5) 0.11 0.36: 2.81 0.73: 0.53: 0.50: 9.65 0.57P 6.83 0.17P 1.28: 2.00 1.70 4.20 2.09 4.18 2.46 7.00 0.30P 0.20P 1.77 1.35 60 fim 588.11 217.57 266.03 108.68: 136.69 <0.19 <0.15 <0.07 <0.10 21.60 62.41 82.90 33.86 40.02 47.63: 35.29 22.21 88.04 19.62 17.20 (6) 4.20 0.76 4.21 2.27 7.19 TABLE 2—Continued 4.28 3.98 6.92 9.69 9.83 4.26 9.19 4.18 5.90 0.32 0.82 3.70 8.78 1.42 1.08 Remarks toTable2 97 100 (im 1415.50 208.66 292.08: 135.34 344.37 638.63 252.84 501.20 115.07 157.74 <0.48 <0.35 <0.24 <0.30 (7) 23.18 78.39 20.20 47.23 27.05 16.06 12.79 12.90 10.02 22.86 27.33 12.05 20.79 77.38 95.42: 11.46 56.34 51.05 45.76 85.80 11.45 2.52 3.31 4.84 2.73 1.04 IRAS Name 12112+1510 <0.33 12150+3804 <0.36 12140+6947 <0.25 12133+1325 <0.34 11298+5320 <0.36 12233+3348 <0.25 12252+1317 <0.27 12334+2814 12301+0023 <0.31 12338+2615 12343+1326 12396+3249 23197+4034 12415+3226 23552-3252 22347+3409 12485+4123 12480+2547 22179-4617 20338+5958 12542+2157 1.83 13025-4911 13111+3651 13271-1742 <0.25 13225-4245 11.20 13191-3622 <0.25 13135+4217 19421-1455 19047-6357 15146+5629 14013+5435 <0.52 13341-2936 13277+4727 17185+5756 12373-1120 (8) <0.35 <0.40 <0.90 <0.69 <0.57 <0.59 <0.30 <0.25 <0.25 <0.46 <0.83 <0.25 <0.25 12 /¿m 2.79 0.78 3.65 1.82 0.90 4.72 2.17 1.21: 1.37 (9) PSC FluxDensity(Jy) <0.62 <0.31 <0.45 <0.25 <0.25 <0.27 <0.34 <0.25 <0.39 <0.24 <0.25 25 fim <0.25 <0.25 <0.25 <0.33 <0.25 <0.31 14.32 15.07 19.61 (10) 0.29: 0.58: 0.56 0.43: 0.43 0.89 3.01 3.50 2.57 6.56 0.94 0.35 2.40 1.15 1.06 60 fim 388.05 171.12 103.25 <0.45 <0.93 <0.81 51.15 55.70 36.89 52.07 27.64 19.02: 31.68 13.08 (h) 5.02 4.00 2.07 5.25 3.91 0.75 3.12 7.08 5.94 1.60 2.17 0.41: 5.59 0.82 0.65 9.89 2.02 3.83 1.70 1.91 1.02 <11.44 100 fim 684.01 118.60 103.78 212.05 335.73 126.37 121.42 <7.00 24.69: 18.38 22.72 74.47: 10.44 14.41 17.45 11.72 32.54 99.84 43.55 80.89 35.13 29.90 (12) 16.94 2.94 7.42 2.81 3.93 5.68 6.08 7.28 3.11 2.55 3.59 1.11 198 8ApJS. . .68. . .91R _1 98 /Am) aslistedinAaronsonetal.(1982)andthesourcescited The RC2colorshavebeenrecalculatedusingthecorrection been recalculatedusingthecorrectionformulaeofRC2and color indicescorrectedforGalacticandinternalextinction. Burstein andHeiles(1984). formulae ofRC2andtheGalacticextinctionestimates Galactic andinternalextinction.TheRC2magnitudeshave emission aslistedinAaronsonetal.(1982),Huchtmeier the GalacticextinctionestimatesofBursteinandHeiles(1984). was usedtoestimatethetotalfluxofmid-andfar-infrared (1983), andthesourcescitedtherein. ties at12,25,60,and100/im. tion andrefertoanaperture-to-diameterratiolog(A/D)= therein. ThemagnitudeswerecorrectedforGalacticextinc- /im wererequirementsforusingthemodel,ifonlyupper bandpasses (IRASSupplement,TableII.C.5),wereiteratively with anemissivitylawproportionalto\.Thetwodistribu- nent energydistributionsofthemodelwerePlanckcurves galaxy data(ExtragalacticCatalog),atwo-temperaturemodel sources citedtherein. value withanuncertaintyset equaltoone-halfthelimitvalue. limits at12and25/Amwere available thesevalueswereused. Table 2.Whilemeasurablefluxdensitiesatboth60and 100 emission ofthegalaxies.Bothwarmandcoldcompo- and Young(1986)Verter(1985). sity at1400MHzasUstedinRC2,Hummel(1980),andthe An uncertaintyof15%was assigned tomeasuredfluxdensi- fitted tothemeasuredfluxdensitiesorlimitsreported in For anupperlimit,themodel fitwastoone-halfthe3alimit tions, convolvedwiththespectralresponseoffourIRAS ties. Themeancorrectionwas 14%,—15%,4%,and4%forthe 12, 25,60,and100¡xmflux densities, respectively. -0.5. Column (2).—1?°,thetotalbluemagnitudecorrectedfor Column (1).—Galaxyname. Column (5).—Magnitudeinthenear-infraredHband(1.65 Columns (3)-(4).—(B-V)%and{U-B)%,integrated Since asingle-temperaturemodelcannotgenerallyfitIRAS Column (10).—IntegratedfluxdensityinHI21cmline Columns (6)-(9).—IRAScolor-correctedtotalfluxdensi- Column (12).—IntegratedfluxdensityinCOfromSanders Column (11).—Meanintegratedradiocontinuumfluxden- emission ofthehemispheregalaxynotcontainingcompanion. Schwering 1987). © American Astronomical Society • Provided by theNASA Astrophysics Data System N6822.—Total fluxdensity,abovelocal“cirrus”background,within14'ofgalaxycenter. Draco System.—PSCdetectionisabackgroundgalaxy. N4438.—100 /¿msourcepossiblyconfusedbecauseofnearbysource. N352L—Cirrus infield. M51.—N5194 andN5195werenottotallyresolved;theM51totalfluxdensitieshavebeenestimatedastwicemeasured N3627.—Double sourcenearnucleusat12and25jam. N3198.—Low-level emissionfromdiskat12and25jam. N2903.—Cirrus infield. N1448.—Possibly extendedalongcross-scandirection. LMC.—Integrated emissionwithin4°of0521.22—6807.2;theforegroundsourceshasnotbeenremoved(cf. N1365.—Low-level emissionfromdiskat12and25fim. NISI3.—Heavy cirrusinfield. N1291.—Emission fromdiskat100/¿m. N1097.—Low-level emissionfromdiskat12and25(im. c) IntegratedInfraredProperties Remarks toTable2—Continued RICE ETAL. 5 wavelength bands.Asdiscussedin §Hid,thereported12and25/Amflux emission byexcludingthecontribution oflow-leveldiffuseemission densities (orlimits)offaintextended sourcesmayunderestimatethetotal derivations maybeaffectedby the sensitivityof12and25/am galaxies. contribution attheIRASwavelengthsofnonequilibriumemission from physical interpretationstothetotalfluxesanddusttemperaturesderived statistical analysesintercomparingtheinfraredpropertiesofsample small dustgrains).Thederivedquantitiesofthemodelareuseful for mid- andfar-infraredwavelengthsispoorlyunderstood(e.g.,therelative IRAS fluxdensitiesofgalaxies,oneshouldbecautiouswhenapplying wavelengths. Warmandcoldcomponentdusttemperatures the galaxydisk. from thissimplifiedmodel.Thetrueenergydistributionofgalaxies at were alsoderivedfromthefits. model, andthetotalfluxofcombinedcomponents,were obtained byintegratingthetwofinalfittedcurvesoverall The columnentriesarethefollowing: converted toluminositiesusingthedistanceslistedinTable1. warm andcoldcomponentdistributionsofthetwo-tempera- mate ofthetotalfluxbetween42.5and122.5pm,definedin /Am fluxtothetotalofcoldcomponentdistribution of where /„(60)and/„(100)arethefluxdensitiesattwo solar units. units. Helou etal.1987). to thetotalfluxofcombineddistributionsmodel. the coldcomponentdistributionoftwo-temperaturemodel ture model. far-infrared wavelengthsasreportedinTable2(seealso the ExtragalacticCatalogas the two-temperaturemodel. 5 -2 2 Note thatthecolor-correction,total flux,andinfraredtemperature Whilethetwo-temperaturethermalmodelprovidesabetterfitto The totalfluxesofthewarmandcoldcomponents The modelresultsarereportedinTable4.fluxeswere Column (3).—L(IR),IRconvertedtoluminosityin Column (2).—IR,thetotalflux(Wm)ofcombined Column (1).—Galaxyname. Column (4).—IR/=f,theratiooftotalflux Column (5).—^IR>thefar-infraredflux(Wm),anesti- Column (7).—F/IR=,theratioof42.5-122.5 Column (6).—L(F),Fconvertedtoluminosityinsolar T T CTc lKcFIR C mIR 14 F =1.26(2.58/„(60)+/„(100))XlCT, ir Vol. 68 198 8ApJS. . .68. . .91R /Am fluxtotheblue-lightflux. /Am (deJongetal.1984;Soifer1984)anddiffersfrom ing. Here,theblue-lightfluxisdefinedasF£=vfat0.44 the combineddistributionsoftwo-temperaturemodelto the commonlyused“in-band”blue-lightflux. the blue-lightfluxcorrectedforGalacticandinternalredden- No. 2,1988 v Column (8).—IR/F£=f,theratiooftotalflux Column (9).—F/*=theratioof42.5-122.5 T B lRBFIR N2903 N2841 N2683 N2403 LMC N1560 N1448 N55 N45 M82 M81 N2997 1342 N1365 N1313 N1291 N1097 N925 N247 N185 N147 N134 Leo I N3115 N3109 Fornax Sys. N1023 N891 N660 N628 M33 11613 N300 SMC N253 M31 N205 N3556 N3521 12574 N3198 N3623 N3621 N3628 N3627 Name (1) (2) American Astronomical Society •Provided bythe NASA Astrophysics Data System 10.00 10.01 11.07 10.77 10.93 10.66 11.02 10.05 10.59 10.17 10.05 11.08 10.68 10.23 9.83 0.31 9.93 9.24 9.37 9.29 9.69ri) 7.27 7.75 9.02 9.20 8.52 9.86 9.94 9.86 9.69ri) 7.39 9.60 2.39 7.61 8.99 3.68 8.71 8.89 5.92 8.50 9.48ri) 9.41 9.64 9.40 9.74 (B-V) (U-B) 0 0.65 - 0.57 0.79 0.77 0.42 0.47 0.45 0.78 0.85 0.57 0.92 0.96 0.72 0.78 0.79 0.91 0.92 0.49 0.73 0.87 0.55 0.76 0.81 0.47 0.95 0.74 0.55 0.47 0.59 0.41 0.77 0.39 0.80 0.51 -0.08 0.68 0.63 (3) (4) IRAS OBSERVATIONSOFLARGEOPTICALGALAXIES -0.16 4.38 0.00 0.35 0.17 0.07 0.02 0.43 0.20 0.53 0.47 0.09 0.36 0.32 0.17 10.07 6.90 6.96 6.45 9.31 4.38 6.56 8.38 9.65 7.20 6.84 8.74 4.74 0.91 7.58 6.76 6.51 8.71 7.69 6.97 6.70 7.40 (5) Global EmissionProperties 3405.97 164.33 3 (6) 28.27 68.34 82.06 37.03 82.58 0.97 0.90 0.20 0.32 6.33 5.83 3.99 5.42 3.52 7.0249.94120.68137Í) 6.52 0.03 0.40 3.68 2.23 0.17 2.06 4.03 2.83 0.60 1.01 1.17 4.97 2.67 5.25 1.65 3.64 TABLE 3 7157.10 90480.32 278.17 255.73 142.52 39.53 12.05 33.29 82.42 0.89 0.66 0.39 0.14 6.06 0.07 4.32 6.50 3.30 0.60 6.53 0.16 2.26 0.53 4.33 5.49 6.53 0.53 4.31 0.07 4.57 6.72 3.55 3.46 1.51 /Am fluxdensitywasanupperlimitorbothvalueswere limits. ponent. Acolonfollowinganentrymeansthatthe12or25 nent. and thestandarddeviationfrommeanofcolumn The lastthreelinesofthetablelistmedian,mean, Column (11).—7^,thedusttemperatureofcoldcompo- Column (10).~T,thedusttemperatureofwarmcom- W 7337.85 1375.27 1095.99 489.85 272.65 442.56 91.22 38.59 44.82 54.43 63.30 46.86 55.42 83.84 34.41 74.66 21.85 24.20 60.30 30.88 10.20 34.63 17.49 52.27 0.28 0.52 4.02 2.35 6.90 8.31 7.83 8.23 3.74 1.71 2.82 2.36 1.60 1.53 190632.61 ... 15505.51 3 3 3080.75 1906.87 1340.50 1310.68 3 687.25 4908<) 207.70 3 154.75 1459 191.37 159 179.82 2450<) 153.46 182.65 106.39 129.96 126.72 150.51 95.49 440<) 64.11 154 35.67 134 3 35.73 68.57 28.60 25.47 27.94 94.08 88.48 77.81 83.78 10.66 72<) 11.16 18.40 16.07 5.51 191 5.21 236 3.97 2.03 3.83 8.24 1280Í) 3 3 3 3 3 2010<) 3 3 3 3 499 700<) 266 307 650Í) 740 668 206 225 500<) 282 276 187 190 173Í) 150() 144() 45() 85 36() 61 26 4 616600Í) 4 4 67600<) 4 <100 4 4 4 4 4 4 2500<) 35000 8000 5500 3100 8000 <50<) <50 <50 <50 <50 <50 <50 <50 <70 <50 400 616<) 300 200<) 380 708Í) 540() 700Í) 420<) 430 210 770 390 200 293 500 512 90 95 65 5 42000 23000 10000 4900<) 6800 8300 99 198 8ApJS. . .68. . .91R -2 100 clude thevaluesdeterminedusingalimit. entries. Thewarmcomponentdusttemperaturestatistics ex- mJy arcminisophotalbrightness level.Table5reportsthe obtained fromthe60/nnsurface brightnessmap.Thediame- extended galaxiesleastaffected bytheIRASbeamwas ter wasmeasuredalongthegalaxy opticalmajoraxistothe25 The far-infraredisophotaldiameter ofthelargestinfrared -1 Aaronson etal.1982;(3)Huchtmeierétal.1983.21cmcontinuum: Hummel 1980;(4)RC2.CO:SandersandYoung1986; (5) Verter1985. 1.65 fim(mag);H1(Jykms);21cm(mJy);CO(mJy. © American Astronomical Society • Provided by theNASA Astrophysics Data System N3718 N4236 N4216 N4192 N4826 N4762 N4736 N4725 N4656 N4631 N4594 N4569 N4565 N4559 N4517 N4272 N4438 N4395 N4258 N4244 N5128 N5102 N5055 N5033 N4945 U Mi MIDI M83 M51 N5170 15201 N6822 N6744 Draco Sys. N5907 N7640 N7331 N6946 WLM N7793 Notes.—Optical valueshavebeencorrectedusingtheGalacticreddening estimatesofBursteinandHeiles1984.Units: Sources.—Optical: RC2;(1)RSA;(2)Kraan-KortewegandTammann 1979.1.65/zm:Aaronsonetai1982.H1: Name (1) d) Far-InfraredDiameters 1 2 11.02 10.43 10.34 10.77 10.16 10.45 10.48 10.63 10.06 10.38 ll.Oli) 10.31 11.06 10.41 10.94 11.6 11.9 () 9.55 9.20 9.30 9.85 B°t 9.13 9.00 9.80 8.86 9.91 9.64 9.96 8.66 7.42 8.15 8.78 8.03 8.83 8.19 9.67 7.97 8.46 8.74 9.59 (2) [B-V) 0 0.68 0.30 0.88 0.67 0.76 0.82 0.74 0.71 0.29 0.41 0.88 0.68 0.68 0.37 0.94 0.75 0.53 0.61 0.29 0.49 0.58 0.86 0.63 0.69 0.57 0.46 0.61 0.43 0.69 0.56 0.32 0.29 (3) [U-B) 0 (4) 43 33 24 22 14 6 15 32 12 12 1.65 /¿m (5) 08 06 77 70 75 50 34 30 38 10 11 58 97 44 89 TABLE 3—Continued 12 /¿m (6) RICE ETAL. 28.09 26.37 31.24 11.25 14.36 0.15 0.13 0.63 0.32 0.12 6.49 0.75 0.89 0.15 0.57 0.65 5.51 2.56 6.33 0.14 1.91 1.71 7.40 1.57 0.29 0.14 0.12 3.32 3.82 1.36 1.77 Color-corrected (Jy) 25 /zm (7) 37.53 25.69 41.47 12.61 10.29 18.31 0.56 0.27 0.09 0.15 0.28 0.38 0.16 0.62 0.42 5.76 8.35 2.33 5.81 1.10 1.39 1.64 1.47 2.59 3.53 3.48 diameter wascalculatedusing theinterpolationformula cally correctedforGalactic extinction.Thecorrectedblue diameter totheblue-lightisophotal majordiameterstatisti- dex andbarparameterletter. 1.10 results. Thecolumnentriesare: 1.75 Column (4).—D/,the ratio ofthe60/imisophotal Column (3).—D,the60/nn isophotaldiameter. Column (2).—TheRC2morphologicalclassificationTin- Column (1).—Galaxyname. lRB lK 60 /zm 639.41 236.32 285.97 146.54 (8) 68.36 21.91 37.11 89.26 39.70 92.86 10.34 84.95 18.15 22.07 58.59 20.80 36.59 0.79 4.44 4.23 6.54 9.64 9.30 4.59 4.27 2.08 7.53 3.94 7.35 0.85 3.97 8.14 1.05 0.32 3.91 1.56 100 /zm 1465.39 3 216.44 518.10 661.47 3 (9) 139.52 263.48 165.61 357.29 192.56 196.71 2150Í) 120.33 49.68 24.23 79.93 56 21.87 24.05 28.51 28.15 21.05 82.18 53.24 10.40 13.46 12.54 13.46 16.85 48.14 242 11.75 90.05 975Í) 58.70 11.95 2.64 2.86 5.09 3.42 1.09 3 3 3 3 3 3 3 3 3900() 3 3 1600() 3 3 3 476 639<) 418 3 393() 30l() 506 372 242 314 230<) 3 100 103<) 178 839(> 285() 271 360() 212 (10) <4() HI 62<) 23(> 83 89() 87 12() (3) 4 4 1300000<) 21 cm 4 <100 (h) 6600() 1300 1650 1500 1500 21001 <50 <50 <50 <50 <70 <50 <50 300 409 270 250 820 200 118 100 130 125 850 180 486 114 90 90 90 16000 11001 CO (12) Vol. 68 198 8ApJS. . .68. . .91R adopted fromRC2: where AistheGalacticreddeningfromBursteinandHeiles (1984) andTistheRC2morphologicalclassificationindex. defined hereasthecircularaperture,centeredongalaxy sion. AsinRC2,the60¡xmemissioneffectiveapertureis ture diametertotheisophotalof60/imemis- No. 2,1988 B Column (5).—(A/D),theratioof“effective”aper- elK log D=+vl(012-.07r), b255 © American Astronomical Society • Provided by theNASA Astrophysics Data System N45 N55 N134 N185 N205 N247 M31 N253 N628 11613 N 300 SMC N925 N891 N660 M33 1342 N1365 N1313 N1291 N1097 N2403 LMC N1560 N1448 N2841 N2683 N2903 N2997 M82 M81 N3109 N3521 12574 N3198 N3556 N3621 N3623 Name N3627 N3628 N3718 N4192 N4216 N4236 N4244 (i) 2 IRt 7.62E-12 2.04E-13 9.56E-14 2.87E-12 2.08E-13 6.22E-10 9.23E-12 2.90E-12 (W m“) 4.59E-13 3.06E-12 1.68E-10 9.37E-12 4.00E-12 5.82E-12 5.71E-11 1.02E-12 5.73E-12 1.03E-10 1.51E-13 3.40E-11 6.78E-12 2.10E-13 1.10E-12 8.48E-09 4.31E-12 7.23E-12 1.54E-12 4.10E-13 6.17E-12 7.86E-13 3.16E-13 8.27E—12 4.53E-12 3.90E-12 1.24E-12 1.57E-12 6.09E-13 1.17E-10 7.03E-12 5.74E-12 4.59E-13 5.26E-13 5.99E-13 1.07E-12 1.40E-13 (2) IRAS OBSERVATIONSOFLARGEOPTICALGALAXIES L(IRr) 9.13E+10 7.25E+08 2.38E+09 3.46E+06 2.79E+09 5.58E+10 3.18E+08 1.59E+06 3.41E+06 5.23E+08 2.84E-1-10 7.00E-I-10 7.02E-H10 8.60E+09 1.18E+08 2.86E+11 3.40E-I-09 3.13E+09 2.33E+10 1.45E+09 2.08E+10 4.84E+09 6.57E+07 4.67E+10 3.13E-I-09 2.70E+09 8.61E+08 1.18E+11 3.44E+10 2.01E+10 7.89E+09 3.29E+09 1.43E+08 3.04E+10 3.03E+10 1.57E+08 3.09E+10 3.47E+09 2.05E+09 3.71E+10 1.07E+10 7.87E+09 4.64E-H08 1.60E+10 1.41E+08 (¿o) (3) fo,T 0.779 0.875 0.897 0.755 0.818 0.685 0.980 0.939 0.934 0.735 0.785 0.808 0.913 0.787 0.802 0.875 0.758 0.890 0.723 0.759 0.858 0.751 0.800 0.806 0.962 0.807 0.733 0.768 0.839 0.967 0.649 0.774 0.747 0.834 0.968 0.777 0.728 0.962 0.798 0.768 Integrated InfraredProperties 0.793 0.658 0.957 0.810 0.986 (4) 2 4.70E-12 6.71E-14 3.44E-14 1.16E-13 6.02E-13 5.43E-11 1.33E-12 4.07E-10 5.59E-11 (W m") 9.27E-14 4.49E-12 2.95E-11 5.85E-13 3.51E-12 6.99E-13 2.98E-12 1.69E-12 4.48E-13 5.07E-12 2.33E-12 3.55E-12 5.02E-09 7.52E-13 1.51E-12 4.33E-13 2.12E-12 3.56E-12 1.85E-13 2.11E-13 5.84E-11 3.65E-12 1.67E-11 2.06E-12 3.00E-12 2.12E-13 1.37E-13 2.90E-13 2.10E-12 3.66E-12 5.26E-13 5.65E-14 3.12E-12 2.35E-13 2.56E-13 3.39E-13 Fir (5) TABLE 4 4.10E+08 4.23E+10 9.05 E+08 5.73E+05 1.47E+09 1.12E+06 3.04E+10 4.23E+10 3.04E+08 7.73E+07 6.15E+10 4.59E-I-09 7.46E+08 2.09E+06 9.37E-h07 3.41E+10 1.88E+08 9.91E+09 5.10E+08 1.39E+10 4.39EH-07 2.86E+09 2.67E+09 2.32E+10 1.14E+10 1.55E+11 1.98E+09 1.26E+09 8.12E-H07 1.41E+09 1.01E+10 4.96E+09 1.39E+09 1.69E-I-10 1.45E-I-09 8.26E+08 2.01E-I-10 1.61E+10 1.48E+10 7.87E+09 1.65 E+09 7.88E-H07 3.51E+09 1.61E+10 2.63E-H08 L(F) emission. BothdiameterswereobtainedfromRC2. diameter oftheisophotalmajorblue-light emission, arefollowedbyacolon.Thelasttwolinesreport fected bythebeamorconfusionduetolocal“cirrus” the meanandstandarddeviationofcolumnentries. 1K image, fromwhichone-halfofthegalaxytotal60^memis- sion wasmeasured. (ho) (6) Uncertain infrareddiametermeasurements,possiblyaf- Column (6).—(A/D),theratioofeffectiveaperture eB /fir,c 0.704 0.631 0.595 0.428 0.440 0.473 0.602 0.619 0.700 0.741 0.626 0.639 0.671 0.678 0.714 0.460 0.687 0.618 0.751 0.679 0.603 0.678 0.600 0.556 0.649 0.706 0.655 0.471 0.535 0.661 0.691 0.767 0.569 0.671 0.682 0.651 0.494 0.636 0.680 0.677 0.619 0.613 0.467 0.688 0.574 (7) 0.257 0.201 17.602 0.021 0.026 2.064 0.207 0.168 0.304 0.235 4.742 0.885 0.556 0.060 0.829 0.107 4.031 6.569 0.234 0.535 3.665 2.502 0.662 0.724 0.471 fo,B 0.442 0.320 0.602 0.099 0.312 1.309 1.785 2.011 0.200 1.444 1.800 0.612 0.149 1.495 0.326 0.126 1.171 0.218 1.721 1.689 (8) (9) 0.956 0.159 0.114 0.007 0.009 0.067 0.099 0.177 0.153 2.583 0.875 0.483 0.043 0.435 0.287 0.037 0.153 0.638 0.285 0.379 0.279 3.959 0.295 0.711 0.160 0.138 1.985 0.166 0.332 0.066 0.886 1.304 1.962 0.728 0.542 8.760 0.095 0.878 0.300 0.060 0.933 0.070 0.146 1.065 0.123 406.2: 216.1: 210.3 224.0 295.6 148.7 224.4: 230.4 264.4: 228.1 255.6 227.2 251.8 217.7 156.5 172.8 209.6 254.3 321.9 183.0: 194.0 169.1 254.2 205.5 172.2 158.5 176.7 170.9 194.9 174.1 259.5 212.5 156.3 325.1 281.7 201.5 164.6: 198.5 152.3: 202.9: 197.6 219.5: 199.6: 196.2 143.7 (10) Tw (K) 28.5 34.1 30.4 23.2 23.7 24.6 29.2 29.9 34.4 36.8 32.4 40.1 30.1 30.6 (K) 29.0 32.1 34.2 47.6 31.2 24.5 27.4 30.9 34.4 33.2 32.4 29.6 27.7 32.0 24.3 32.5 28.8 31.7 34.0 (H) 32.7 31.3 26.6 T 25.3 30.2 32.3 29.9 29.4 32.7 32.2 24.5 28.1 c 101 198 8ApJS. . .68. . .91R brightness imageswithpeakintensitieslessthan6aare not direction aredisplayedinFigure1foralldetectedgalaxies, displayed.) Theprofilesarecenteredontheopticalcenter of excluding theSMCandLMC.(Theprofileplotsofsurface 102 light photographsandIRAS surfacebrightnesscontourmaps representative IRASpointsource, isalsodisplayed. each setofplots.ThewavelengthprofileIRC+10011, a the galaxiesandarescaledbypeakintensityfoundalong the cut.Thepositionangleofin-scancutsisnotedabove Radial infraredbrightnessprofilesalongtheIRASscanning The atlasplates(Figs.2-33 [Pis. 136-168])displayoptical V. ATLASOFINFRAREDPROFILESANDMAPS © American Astronomical Society • Provided by theNASA Astrophysics Data System h) IRASSurfaceBrightnessMaps Ít,b =IRt/Fb,theratiooftotalinfraredfluxtobluelight(see§IV.C)./FF^. /fir,c =E//Rtheratioof42.5to122.5/imfluxtotalcoldcomponentdistribution. FIR BlR ir0 N4258 N4395 N4565 N4631 N4594 N4569 N4559 N4517 N4438 N4736 N4725 N4656 N4945 N4826 N5055 N5033 N5128 N5102 M83 M51 N5170 N7793 N7640 N7331 15201 N6946 N6822 N6744 N5907 M101 Median WLM Mean RMS Name Notes.—f =tR/IR,theratiooftotalfluxcoldcomponentdistributiontoinfraredflux. c T (i) a) ProfilePlots 2 IRt 9.38E-13 5.02E-13 3.63E—12 5.15E-13 2.30E-12 9.91E-12 6.93E—12 6.28E-11 5.14E-13 1.18E-12 4.17E-12 7.69E—12 2.34E-12 3.54E-12 8.98E-13 6.03E-14 4.82E-I-060.6282.35E-141.88E+060.6210.0600.023202.9:29.1 4.73E-13 2.17E-12 3.42E-11 2.33E—13 2.70E-11 1.28E-12 2.08E-13 7.23E—12 1.13E-12 2.61E-12 5.34E-12 (W m") 1.05E-11 1.17E-13 1.18E-11 1.75E-11 (2) 5.80E+08 L(IR) 7.71E+09 7.44E+09 4.55E+10 3.94E+10 8.73E+09 1.23E+10 4.81E+09 4.05E+10 9.40E+10 2.29E+10 2.12E+10 2.36E+10 2.50E+09 2.47E+10 3.85E+10 2.91E+10 5.43E+09 2.73E+09 8.28E+10 1.92E+10 3.57EH-09 1.07E+10 1.04E+08 1.65E+10 1.05EH-11 1.76E+08 1.03EH-10 1.53E+10 8.60E+09 1.38E+09 t (¿o) (3) 0.791 0.943 0.794 0.868 0.852 0.789 0.780 0.782 0.851 0.756 0.800 0.855 0.841 0.760 0.883 0.904 0.789 0.703 0.669 0.778 0.708 0.757 0.816 0.791 0.612 0.736 0.950 0.796 0.889 0.788 0.796 0.086 0.811 fc,T (4) 2 TABLE 4—Continued 4.79E-13 2.99E-13 9.15E-13 6.56E-13 2.91E-13 4.27E-13 6.43E-13 1.69E-12 9.61E-14 6.11E-14 3.36E-13 5.32E-12 4.91E-12 3.29E-12 2.08E-12 3.73E-12 3.98E-13 6.05E-12 3.70E-11 4.21E-12 8.62E-13 (W m”) 2.60E-12 8.79E-14 8.78E-12 1.34E-11 1.20E-12 2.65E-13 1.80E-12 1.67E-11 1.35E-12 RICE ETAL. Fir (5) 4.35E+09 5.71E+09 4.87E+09 3.46E+08 3.80E+09 4.06E+09 9.62E+09 6.77E+09 9.14E+07 2.44E+10 5.53E+10 3.18E+09 5.56E+09 6.08E+07 9.91E+09 6.54E+09 2.00E+10 1.57E+10 5.13E+10 4.03 E-f-10 1.24E+10 1.21E+10 1.64E+09 5.82E+08 1.80E+10 1.98E+09 4.35E+09 (coded blue),60green),and100pmred)maps photograph. was observed.Table6liststhegalaxiesdisplayed.Except for 1.09E+10 (Fig. 34c).Theseimageswereproducedbycombiningthe 12 orientation oftheM31imagesismarkedonoptical maps is(equatorial)northtothetopandeastleft. The 1.24E+10 the 100pmmap. after smoothingthe12and60pmmapstoresolution of M31, theorientationofopticalphotographsandinfrared of thecataloggalaxiesforwhichinterestingspatialstructure 1.85E+09 1.48E+09 169) forM31(Fig.34a),theSMC34b),andLMC Survey orESOblueprints. ThemosaicsoftheSMCand L(F) /fir,c m (¿o) Color-coded IRASimagesaredisplayedinFigure34(Plate The opticalphotographsare reproductions ofPalomarSky (6) (7) 0.632 0.589 0.651 0.655 0.644 0.642 0.509 0.681 0.479 0.709 0.502 0.723 0.699 0.611 0.566 0.641 0.688 0.696 0.697 0.531 0.571 0.486 0.651 0.694 0.682 0.613 0.629 0.617 0.691 0.649 0.642 0.079 0.625 0.441 0.334 0.374 0.473 0.592 0.494 0.688 0.165 0.249 0.052 4.772 0.589 0.941 0.312 0.246 0.730 0.545 0.926 0.230 2.327 1.980 0.746 0.288 1.441 1.388 0.592 0.295 1.493 1.048 fr,B /fir,bTwTc 1.125 1.206 1.644 (8) (9)(10)(11) i) OpticalPhotographs 0.223 0.205 0.189 0.303 0.274 0.264 0.062 0.247 0.163 0.712 0.345 0.507 0.138 0.697 0.102 0.519 0.027 0.616 0.236 0.479 0.476 2.806 0.565 0.425 0.800 0.097 1.063 0.386 0.161 1.135 225.5 262.2 382.0: 212.1 201.5 235.7 292.3 167.1: 216.0 303.9 216.4: 224.7 223.7 234.7 209.4 329.7: 220.9 199.9 463.0: 212.6 236.1 171.9 200.2 198.1 225.6 219.1 308.1: 212.1 194.3 197.5 215.0 122.1 42.7 (K) 28.4 31.6 30.4 31.5 31.0 25.6 24.8 30.5 25.6 36.6 32.7 33.4 34.2 34.8 26.5 29.4 27.5 30.7 33.4 33.9 30.9 33.1 29.3 27.6 25.0 34.0 32.5 30.4 29.6 31.1 30.6 30.7 3.9 Vol. 68 198 8ApJS Rice etal.(see68,102) Observatory.) Fig. 5.—NGC253.Thetickmarkson theinfraredmapsarespacedby5'4. © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Light (Optical photographsreproducedbypermission oftheEuropeanSouthern Blue and60[am 100 jim PLATE 139 198 8ApJS. . .68. . .91R á> © American Astronomical Society •Provided bythe NASAAstrophysics Data System
Fig. 121. Finding charts for fields S817 S830. Northeast is to the upper left, and the fields are 0?5 in size. Note the breaks in continuous field sequencing', charts S826 and S829, which are oversized, are given in Fig. 132. Lasker, Sturch, et al. (see 68, 10) 1988ApJS ... 68 . Rice etal.(see68, 102) photographs reproduced bypermissionoftheEuropean SouthernObservatory.) IRAS beamrepresentedbythe J, andJpowerbrightnesslevelcontoursofthestarIRC+10011, arepresentativeIRASpointsource.(Optical PLATE 136 Fig. 2.—NGC55.Thetickmarks ontheinfraredmapsarespacedby5'4.Theboxedimageinupper left-handcomerofthecontourmapsis J __JI1l © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Light 12 |^m o Blue and60|im 100 pm 198 8ApJS. . .68. . .91R Rice etal.{see68, 102) reproduced bypermissionoftheCalifornia InstituteofTechnology.©1960NationalGeographicSociety-Palomar SkySurvey.) o Fig. 3.—NGC224.Thescalemarked onthephotographsisI.Thetickmarksinfrared maps arespacedby2L7.(Opticalphotographs © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Light 25 |im PLATE 137 1988ApJS ... 68 . Rice etat.(see68,102) PLATE 138 © American Astronomical Society •Provided bythe NASAAstrophysics Data System Fig. 4.—NGC247.(Opticalphotographs reproducedbypermissionoftheEuropeanSouthernObservatory.) Blue Light 60 |im 198 8ApJS. . .68. . .91R Rice etal.(see68, 102) Observatory.) Fig. 5.—NGC253.Thetickmarks ontheinfraredmapsarespacedby5'A.(Opticalphotographsreproduced bypermissionoftheEuropeanSouthern © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Light Blue and60urn PLATE 139 198 8ApJS. . .68. . .91R reproduced bypermission oftheMountWilsonand LasCampanasObservatories,Carnegie InstitutionofWashington.) map meanbackground levelandat(solid)10o and withbrightercontoursscaled logarithmicallyby2from10a. (Opticalphotographs maps havebeensmoothed totheresolutionof100 jammap.Thecontourlevelsof the60and100jammapsareat(dashed) 9abelowthe Rice etal.(see68, 102) o PLATE 140 Fig. 6.—SMC.Thescalemarked onthephotographisI.Thetickmarksinfraredmaparespaced by42'.The12,25,and60jam © American Astronomical Society • Red Light 60 /um Provided bytheNASA Astrophysics Data System Red and60jim 100 jum 198 8ApJS. . .68. . .91R Rice etal.(see68,102) brighter levelsatincrementsof10 g.(OpticalphotographsreproducedbypermissionoftheEuropean SouthernObservatory.) Fig. 7.—NGC300.Themapcontour levelsareat(dashed)3,6,and9abelowthemapmeanbackground levelandat(solid)3,6,10awith © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Lightand60jim PLATE 141 198 8ApJS. . .68. . .91R Rice etal.(see68, 102) reproduced bypermissionoftheCalifornia InstituteofTechnology.©1960NationalGeographicSociety-Palomar SkySurvey.) PLATE 142 Fig. 8.—NGC598.Thescalemarked onthephotographsis30'.Thetickmarksinfrared maps arespacedby12'4.(Opticalphotographs © American Astronomical Society •Provided bythe NASAAstrophysics Data System 12 }im 25 um 198 8ApJS. . .68. . .91R Rice etai(see68,102) © American Astronomical Society •Provided bythe NASAAstrophysics Data System Fig. 9.—NGC1313.(Opticalphotographs reproducedbypermissionoftheEuropeanSouthernObservatory.) Blue Light Blue and60um PLATE 143 198 8ApJS. . .68. . .91R Rice etal.(see68, 102) of Technology.©1960NationalGeographic Society-PalomarSkySurvey.) (solid) 10aandwithbrightercontours scaledlogarithmicallyby2from10a.(Opticalphotographsreproduced bypermissionoftheCaliforniaInstitute PLATE 144 Fig. 10.—IC342.Thesolidcontour levelsofthe60and100fimmapsareat(dashed)3,6,9 o belowthemapmeanbackgroundlevelandat © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Light Blue and60jam 198 8ApJS. . .68. . .91R Rice etal.{see68,102) © American Astronomical Society •Provided bythe NASAAstrophysics Data System Fig. 11.—NGC1448.(Opticalphotographs reproducedbypermissionoftheEuropeanSouthernObservatory.) 12 |im 25 (im PLATE 198 8ApJS. . .68. . .91R level andat(solid)10awith brightercontoursscaledlogarithmicallyby2from10a.(Opticalphotographs reproducedbypermissionoftheMount Wilson andLasCampanasObservatories, CarnegieInstitutionofWashington.) been smoothedtotheresolutionof the100jammap.Thecontourlevelsof60andmapsare at(dashed)9obelowthemapmeanbackground Rice etal.(see68,102) PLATE 146 o Fig. 12.—LMC.ThescalemarkedonthephotographisI.tick marksontheinfraredmaparespacedby61'.The12,25,and60/rmmapshave © American Astronomical Society •Provided bythe NASAAstrophysics Data System Red and60jum Red Light 198 8ApJS. . .68. . .91R Rice etal.(see68,102) © American Astronomical Society •Provided bythe NASAAstrophysics Data System 60 /im Fig. 12—Continued 100 /im 25 /im PLATE 147 1988ApJS ... 68 . Rice etal.(see68,102) Society-Palomar SkySurvey.) PLATE 148 Fig. 13.NGC2403.(Opticalphotographs reproducedbypermissionoftheCaliforniaInstitute ofTechnology.©1960NationalGeographic © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Light Blue and60gm 198 8ApJS. . .68. . .91R Rice etal.{see68,102) Society-Palomar SkySurvey.) Fig. 14.—NGC3031.(Opticalphotographs reproducedbypermissionoftheCaliforniaInstitute ofTechnology.©I960NationalGeographic © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Light 60 urn Blue and60 100 pm PLATE 149 198 8ApJS. . .68. . .91R Rice etal.(see68,102) PLATE 150 © American Astronomical Society •Provided bythe NASAAstrophysics Data System Fig. 15.—NGC3109.(Opticalphotographs reproducedbypermissionoftheEuropeanSouthernObservatory.) Blue Light 60 nm Blue and60|im 198 8ApJS. . .68. . .91R Rice etal.{see68,102) Society-Palomar SkySurvey.) Fig. 16.—IC2574.(Opticalphotographs reproducedbypermissionoftheCaliforniaInstitute of Technology.©1960NationalGeographic © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Lightand60pm PLATE 151 198 8ApJS. . .68. . .91R Rice etal.(see68,102) Society-Palomar SkySurvey.) PLATE 152 Fig. 17.NGC3628.(Opticalphotographs reproducedbypermissionoftheCaliforniaInstitute ofTechnology.©1960NationalGeographic © American Astronomical Society •Provided bythe NASAAstrophysics Data System 198 8ApJS. . .68. . .91R Rice etal.(see68,102) brighter levelsatincrementsof 10 a.(OpticalphotographsreproducedbypermissionoftheCalifornia InstituteofTechnology.©1960National Geographic Society-PalomarSky Survey.) Fig. 18.—NGC4236.Themapcontour levelsareat(dashed)3,6,and9abelowthemapmeanbackground levelandat(solid)3,6,10owith © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Lightand60jam 60 |im 100 (am PLATE 153 198 8ApJS. . .68. . .91R Rice etal.(see68,102) Society-Palomar SkySurvey.) PLATE 154 Fig. 19.—NGC4244.(Opticalphotographs reproducedbypermissionoftheCaliforniaInstitute ofTechnology.©1960NationalGeographic © American Astronomical Society •Provided bythe NASAAstrophysics Data System 100 ¡m 25 |im 198 8ApJS. . .68. . .91R Rice etal.(see68,102) Society-Palomar SkySurvey.) Fig. 20.—NGC4258.(Opticalphotographs reproducedbypermissionoftheCaliforniaInstitute ofTechnology.©1960NationalGeographic © American Astronomical Society •Provided bythe NASAAstrophysics Data System 60 um 100 (im PLATE 155 198 8ApJS. . .68. . .91R Rice etal.(see68,102) Society-Palomar SkySurvey.) PLATE 156 Fig. 21.—NGC4395.(Opticalphotographs reproducedbypermissionoftheCaliforniaInstitute ofTechnology.©1960NationalGeographic © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Light Blue and60|im 198 8ApJS. . .68. . .91R Rice etal.(see68,102) © 1960NationalGeographicSociety-Palomar SkySurvey.) (solid) 3,6,and10awithbrighter levelsatincrementsof10a.(Opticalphotographsreproducedbypermission oftheCaliforniaInstituteTechnology. Fig. 22.—NGC4565.Forthe12 and25¡immaps,thecontourlevelsareat(dashed)3,6,9 o belowthemapmeanbackgroundlevelandat © American Astronomical Society •Provided bythe NASAAstrophysics Data System 12 um 100 (im PLATE 157 198 8ApJS. . .68. . .91R Rice etal.(see68,102) Society-Palomar SkySurvey.) PLATE 158 Fig. 23.—NGC4631.(Opticalphotographs reproducedbypermissionoftheCaliforniaInstitute ofTechnology.©I960NationalGeographic © American Astronomical Society •Provided bythe NASAAstrophysics Data System PLATE 159
12 um
100 um Fig. 24.—NGC 4656. (Optical photographs reproduced by permission of the California Institute of Technology. © 1960 National Geographic Society-Palomar Sky Survey.) Rice et al. {see 68, 102)
© American Astronomical Society • Provided by the NASA Astrophysics Data System 198 8ApJS. . .68. . .91R Rice etai(see68,102) brighter levelsatincrementsof 10 a.(OpticalphotographsreproducedbypermissionoftheCalifornia InstituteofTechnology.©1960National Geographic Society-PalomarSky Survey.) PLATE 160 Fig. 25.—NGC4725.Themapcontour levelsareat{dashed)3,6,and9abelowthemapmeanbackground levelandat(solid)3,6,10awith © American Astronomical Society •Provided bythe NASAAstrophysics Data System 100 pm 25 jim 198 8ApJS. . .68. . .91R Rice etal.{see68, 102) Southern Observatory.) Fig. 26.—NGC4945.Thetickmarks ontheinfraredmapsarespacedby5:4.(Opticalphotographs reproducedbypermissionoftheEuropean © American Astronomical Society •Provided bythe NASAAstrophysics Data System 60 um 100 um PLATE 161 198 8ApJS. . .68. . .91R Rice etal.{see68,102) levels atincrementsof10a.(Optical photographsreproducedbypermissionoftheCaliforniaInstitute ofTechnology.©1960NationalGeographic Society-Palomar SkySurvey.) PLATE 162 Fig. 27.NGC5055.Themapcontour levelsareat{dashed)3,6,and9abelowthemapmeanbackground levelandat{solid)10owithbrighter © American Astronomical Society •Provided bythe NASAAstrophysics Data System 60 |im 100 jim 198 8ApJS. . .68. . .91R Rice etal.(see68,102) Society-Palomar SkySurvey.) Fig. 28.—NGC5194.(Opticalphotographs reproducedbypermissionoftheCaliforniaInstitute ofTechnology.©1960NationalGeographic © American Astronomical Society •Provided bythe NASAAstrophysics Data System 60 |im 100 |im PLATE 163 198 8ApJS. . .68. . .91R Rice etal.(see68,102) PLATE 164 © American Astronomical Society •Provided bythe NASAAstrophysics Data System Fig. 29.—NGC5236.(Opticalphotographs reproducedbypermissionoftheEuropeanSouthernObservatory.) Blue Light Blue and60jam 198 8ApJS. . .68. . .91R RlCE /(1) ©' Atffeílcán Astronomical Society• Providedby theNASA Astrophysics DataSystem spaced by5'4.(Optical photographsreproducedby permissionoftheCaliforniaInstitute ofTechnology.©I960National GeographicSociety-Palomar 25 jammap,and 10 aforthe60and100/ammaps withbrightercontoursscaledlogarithmically by2from10a.Thetick marksontheinfraredmapsare Sky Survey.) Fig. 30.—NGC5457.Themapcontours areat{dashed)3,6,and9crbelowthemapmeanbackground levelandat{solid)610oforthe12 Blue Light 60 urn 100 urn Blue and60|im PLATE 165 198 8ApJS. . .68. . .91R Rice etal.(see68,102) PLATE 166 © American Astronomical Society •Provided bythe NASAAstrophysics Data System Fig. 31.—NGC6744.(Opticalphotographs reproducedbypermissionoftheEuropeanSouthernObservatory.) Blue Light Blue and60urn 198 8ApJS. . .68. . .91R Rice etal.{see68, 102) by permissionof theCaliforniaInstituteofTechnology. ©1960NationalGeographic Society-PalomarSkySurvey.) o withbrightercontoursscaledlogarithmically by2from10a.Thetickmarksontheinfraredmaps are spacedby5'4.(Opticalphotographsreproduced Fig. 32.—NGC6822.Forthe60 and 100/ammapsthecontoursareat{dashed)3,6,9abelow mapmeanbackgroundlevelandat{solid)10 © American Astronomical Society •Provided bythe NASAAstrophysics Data System Blue Light Blue and60|im PLATE 167 198 8ApJS. . .68. . .91R PLATE 168 Geographic Society-PalomarSky Survey.) Rice etal.(see68,102) Fig. 33.—NGC6946.(Opticalphotographs reproducedbypermissionoftheCaliforniaInstitute ofTechnology.©1960National © American Astronomical Society •Provided bythe NASAAstrophysics Data System 60 Lim 100 pm 12 um25|i.m 198 8ApJS. . .68. . .91R 100 jum(codedred)IRASsurface brightnessimagesofthegalaxies.Allmapshavebeensmoothedto theresolutionof100¿rmp. rice® AfnerTfciiiV Astronomical Society• Provided by theNASA Astrophysics DataSystem Fig. 34a Fig. 34.-Color-codedinfraredimages of(a)M31,(6)theSMC,and(c)LMC,producedbycombining the12(codedblue)60green),and Fig. 34c‘ Fig. 34b PLATE 169 198 8ApJS. . .68. . .91R -2 No. 2,1988 posed isalsodisplayed.Theopticalphotographsandinfrared with mapsatadifferentscale (NGC55,M31,NGC253, possibility ofinadequatebackground emissionremoval. photograph is8'forallgalaxiesexcepttheMagellanicClouds, maps areatthesamescale;angularscalemarkedon marked oneachinfraredmap. Forallbutthelargestgalaxies, logarithmically by2from10o(i.e.,20,40,80 0.50 N0 DETECTION NO DETECTION DETECTION < 6-SIGMR DETECTION < 6-SIGMR 0.25 CCLU 0.00 -6 -4 -2 -5 -4 -2 0 2 4 5 -6 -4 -2 0 2 4 6 RRDlfiL DISTANCE (RRCMIN) Fig. 1—Continued (i.e., they are the “earliest” type galaxies at 60 fim). Disk The orientation of the nuclear point source is affected by emission is seen in each case, but the pointlike nuclear source the beam scanning direction, and the outer contours of the 60 is very dominant, while the faint “disk” resembles a plateau. pm map to the northeast are probably distorted by emission Group 2: NGC 55, NGC 2403, NGC 3031 (M81), NGC 4258, from a small group of background galaxies. NGC 5194 (M51).—These galaxies are of “later” 60 fim type NGC 224 (M31).—The IRAS images of M31 have been than group 1 galaxies, exhibiting a less strongly enhanced described previously by Habing etal. (1984), Soifer et al. nuclear source relative to the disk emission. The nuclear (1986), and Walterbos and Schwering (1987). The newly source is typically not pointlike, and blends more smoothly processed data presented here show the same features: the into the disk emission. In the larger galaxies spiral arm galaxy is well resolved, with a nuclear source and a bright structure has been resolved. infrared ring that corresponds to prominent dust lanes and Group 3: NGC 224 (M31), NGC 247, NGC 300, NGC 598 the galaxy H I and CO rings. (M33), NGC 1313, NGC 4244, NGC 4725, NGC 5457 (M101), NGC 205 is seen in the 12, 60, and 100 pm maps, and M32 NGC 6744.—The 60 pm profiles of these nine galaxies are is seen in the 12 and 25 pm maps. still nucleus-dominated but show less concentration toward NGC 253.—The images of this very bright galaxy are very the nuclear regions than group 2 galaxies, often having an much dominated by reflected emission from the IRAS tele- almost triangular shape. Structure in the outer regions of the scope spider. A “hysteresis tail,” caused by electronic relaxa- galaxies is frequently apparent. The peculiar galaxy NGC tion effects of the IRAS detectors after crossing a bright 1313 is double-peaked at 12, 25, and 60 pm. source (see the IRAS Supplement, § IV.A.7), is seen in the Group 4: SMC, LMC, IC 2574, NGC 4236, NGC 4395, forward scanning direction. Because of these effects, useful NGC 6822.—These are “late-type” 60 pm galaxies in which information is available only along the major axis. the IRAS images are dominated by emission from prominent SMC and LMC.—The maps of the SMC and LMC dis- H ii region complexes. There is little or no enhanced IRAS played in the atlas were constructed from all-sky survey scans. emission from the nuclear region. The 12, 25, and 60 pm maps have been smoothed to the Group 5: NGC 253, NGC 1448, NGC 3109, NGC 3628, resolution of the 100 pm map ( ~ 3' X 5'). NGC 4565, NGC 5055.—For these highly inclined galaxies The infrared emission structure of the Magellanic Clouds is the IRAS scanning direction was very close to the galaxy typical of group 4 galaxies. Diffuse emission from the galaxy minor axis. Little information is available on their far-infrared disk is seen, but the infrared images are dominated by local- structure. ized emission sources coincident with H n regions and optical emission knots seen in the red-light photographs. Diffuse d) Comments on the Atlas Maps emission at 12 and 25 pm is seen along the optical axial bar of In the following, brief descriptions of the IRAS appearance both galaxies. of the atlas galaxies that exhibit particularly interesting in- NGC 598 (M33).—The IRAS maps of M33, along with frared structure are given. Caveats in the interpretation of the those of the other Local Group members—the Magellanic data are also noted. Clouds and M31—show the most detailed structure of all the NGC 55.—The IRAS images of this edge-on galaxy are galaxies observed. Diffuse emission from the disk and promi- dominated by three pointlike sources including the nucleus, nent localized sources coincident with the galaxy’s brightest all of which are seen at both 25 and 60 pm and two of which H ii region complexes are seen in the infrared images. The are seen at 12 pm. The 100 pm beam is too large to resolve inner pair of spiral arms is clearly visible in the infrared maps. either of the off-nuclear point sources. The off-nuclear sources IC 342.—IC 342 is one of the most interesting of the appear to coincide with dust lanes or spiral arms (viewed galaxies presented here. Although not completely resolved, edge-on) in the optical image. the main spiral arms can be easily traced in all but the 100 © American Astronomical Society • Provided by the NASA Astrophysics Data System 198 8ApJS. . .68. . .91R No. 2,1988 direction whichisnearthegalaxyminoraxis,butmaybe background objects. images. Thespurstotheeastandwestmaybedue pointlike nucleusisseeninboththeopticalandinfrared fim image.Thearmsaresuperposedonasmoothdisk,and the galaxymajoraxis)direction. slightly extendedat60and100jLtmalongthecross-scan(near NGC 1448.—Thegalaxyisunresolvedalongthein-scan American Astronomical Society •Provided bythe NASA Astrophysics Data System U00192 E411-25 U00452 E351-30 U00718 U01249 U00864 U01466 U02173 E250-03 M-02-09-042 U02188 U05873 U05850 E157-20 E359-27 E250-04 U06937 E572-20 U05986 U05882 U05840 U05789 U05557 U05387 U04821 U04305 U04284 U03851 E206-20 E486-05 E572-48 U04936 U07183 U07118 E572-47 U07377 U07278 U07508 U07532 U07718 U07654 U07727 U07878 U07898 Catalog Name (i) IRAS OBSERVATIONSOFLARGEOPTICALGALAXIES a . N2805 N0289 N0221 I 10 N0404 A0057-33 N0474 N0772 11727 N1337 N1068 N1055 N1566 N1512 N1510 N3359 N3344 N2541 N1744 N1532 N3432 N3368 N3351 N3319 N3184 N3079 N2768 A0813+70 N2366 N3992 N3981 N4039 N4038 N4157 N4125 N4274 N4214 N4382 N4406 N4526 N4486 N4535 N4649 N4636 Optically LargeGalaxiesListedinOtherCatalogs Name RC2 (2) hm8 10 49 10 43 10 41 10 40 11 59 11 55 11 53 10 44 10 36 10 15 12 05 11 59 12 17 12 13 12 08 12 22 12 23 12 3130.4 12 2817.8 12 3147.9 12 4109.0 12 4016.6 01736. 0 50 0 3958.0 0 57 4 02 4 01 4 57 4 18 4 10 3 25 2 40 2 39 9 58 9 07 6 40 1 06 9 16 8 13 8 11 7 23 1 44 1 17 1 56 (3) (4) R.A. (1950)Dec. 47 41.6 39.3 31.7 17 09 06.5 35.3 42.7 46.6 01.9 54 36.0 06.9 45.2 56 53 01.0 21.1 35.4 53.5 24 34 34.2 10.7 08.8 37.7 20 16 34.6 20.2 19.6 15.2 17.7 17.0 53.2 39.7 19 TABLE 8 -31 2836 -33 5841 - 01332D - 01345D o/ -18 3623 -18 3511 -19 3700 -50 5500 -26 0600 -55 0323 -33 00 -43 2911 -43 3211 - 93400 5902 " 40 3533D 03 0917 35 2710 27 0455D 63 29 41 56 41 40 64 18 60 14 49 1253D 69 1842D 36 53 25 11 65 2703D 55 70 5213D 18 4550D 53 3913D 29 5333D 50 4551D 36 19D 12 05 11 58 07 5833D 08 2825D 02 5743D 18 2803D 13 25D 12 3958D 11 4923D by Galacticcirrustothenorthatlowestcontourlevels. north andsouthofthenucleus.The100fimimageisaffected dent withthechainsofHnregionsinspiralarmsto coincident withtheclusterofHnregionstonortheast these maps.The100/imimageisaffectedbyGalacticcirrus. the galaxycenter.Faintemissionfromdiskisalsoseenin 05 D 00 D 05 D 40 D 28 D 55 D 56 D 11 D 10 D 11 D IC 2574.—Theprominent60and100fimsourcesare NGC 3031(M81).—Enhancedinfraredemissioniscoinci- D D dlrr dE Sb E E/S0 SO Sb S... Sb Sb dlrr dE SB(r:)b Sc Sc Sc SBd Sc Sc Sc Sa/Sb SBc SBb SBc Sc E/S0 Irr s... SBb SBa Irr Sb E S... SO E SO E Sc/SBc E E Type (5) -5 -6 —3A —2A -5 -5 -5 -1A -5 —2X -4 -5 -5 10B 10 (6) (7)(8) 10X 10B T Z>*£>25 26 4B 4X 4X 3A 9B 4A 6X 6A 3A 9A 2X 7X 9B 3B 3X 4B 3B 6B 9B 5B 5B 7B 2B 5X 2B IB 65.4 13.7 12.6 29.4 13.7 10.0 12.3 10.1 16.6 10.1 11.5 11.7 14.8 8.6 8Í7 8.7 8.0 9.3 9.2 9.2 9.4 9.3 9.7 8.7 9.0 8.2 8.7 8.2 9.7 8.9 8.7 8.2 8.2 8.2 8.6 8.8 9.7 8.0 8.0 8.4 9.2 9.2 9.2 9.2 8.5 RC2 3.7 7.6 5(1 6.2 4.4 7.9 6.2 6.8 6.9 6.6 6.9 7.1 7.4 6.8 6.9 6.3 6.3 6.8 4.0 7.6 3.9 7.1 7.6 7.6 7.6 6.9 6.9 5.1 3.2 2.6 7.6 7.6 5.6 7.1 7.9 1.0 6.8 7.4 6.2 7.2 7.2 7.2 125 198 8ApJS. . .68. . .91R 126 pointlike sources,partiallyresolvedinthecross-scandirec- images areaffectedbyGalacticcirrus. galaxy inthe60and100/immapsisa“hysteresistail” emission knotsintheopticalimage.The60and100jam forward scanningdirection. images areabroadplateaucenteredonM51andpointlike position ofseveralemissionknotsseenintheopticalimage 4656 andtheothertonortheastofnucleusat the is rotatedslightlyfromtheopticalmajoraxisbecauseof of IC2574;enhancedemissioniscoincidentwithoptical 55; twooff-nucleuspointlikesourcesareassociatedwith composed oftwopointsources,oneatthenucleusNGC edge-on system.NotethatthealignmentofIRASimage optical armtothenorthisseenin60jammap. emission knotstothesoutheastofgalaxycenter.Thefaint tion. and thesmallcompanionirregulargalaxy,NGC4657. scanning direction. 25 jam.Thereisprobablyresidual backgroundemissiondue source atNGC5195.Thereissomeevidenceforresolution in teresis” effectsonbothsidesofthegalaxy. the in-scandirectionofmainspiralarmsM51at12 and to Galacticcirrusinthe60and 100jamimages. lar, theresolutionbeinginadequate toresolvemorethana hint ofspiralstructureat12 and25jaminthehighsurface NGC 4244.—The60fimimageissimilartothatof NGC 4236.—The60and100¡imimagesappearastwo NGC 3628.—Theapparentextensiontothesouthofthis NGC 4565.—Littledetailisvisibleintheimagesofthis NGC 4395.—The60and100jammapsaresimilartothose NGC 4656.—Theemissionfromthisgalaxyisessentially NGC 5194(M51).—ThemainfeaturesvisibleintheIRAS NGC 5055.—The100jumimagemaybeaffectedby“hys- NGC 5236(M83).—Theimages ofthisgalaxyarerectangu- © American Astronomical Society • Provided by theNASA Astrophysics Data System 1337 usingtheRC2Tindexof6islessthan8'selectionlimit. E291-14 E408-09 E346-19 U11012 U10359 U09723 E270-17 E576-33 E508-48 U10642 U09792 E274-01 U09631 U09499 U08745 U08286 a Catalog The RC2positionofNGC1337is0325.66-0833.8.Theconverteddiameter Name (i) N7424 15332 N6503 N6140 N5866 N5792 N5746 N5084 N5078 N5023 N5322 Name RC2 (2) hn 23 14 23 31 22 54 17 49 16 20 16 57 15 13 15 05 14 55 13 31 13 17 13 17 1309 15 10 14 42 13 47 (3) (4) R.A. (1950)Dec. 8 09 48 28 36.0 47 48.2 05 58.7 30 07.8 34 24.2 35.1 39 58.0 18 TABLE 8—Continued RICE ETAL. -43 2153 -41 2011 -36 2241 - 028 -21 3353 -46 3736 -27 0848 -45 1706 - 05326D ,,/ 65 30D 44°1813D 70 0926D 60 2621D 55 5716D 0 03 2 0953D brightness disk.Thereisasmall“hysteresis”probleminthe background galaxies. with Hiiregionsareevidentinthe12,25,and60jammaps. is almosttwiceitsopticaldiameter,aslistedinRC2,corrected background at100jamresultedinpoorremoval. east ofthenucleusisprobablyduetoemissionfromapair 100 jamimage.Thelow-levelspurinthe60imageto for Galacticextinction.Localizedinfraredsourcescoincident Galactic cirrus,themeasuredinfrareddiameterofgalaxy and 60jam,superposedonasmoothdisk.Theopticalarmto discrete sourcesassociatedwithHuregionsareseenat25 of thecomponentobservationsmaps.Acomplex shape ofthepointsourcereflectsdifferentscanningangles concentrated appearance,withsomeevidenceofarmresolu- though the60and100jamimagesaresomewhataffectedby the northeastispartiallyresolvedin60jammap. southeast isabackgroundobjectunrelatedtothegalaxy. The tion tothenorthwest.Thediscretepointsource the the infraredgalaxyimagespresentedinatlas.Several preparing themanuscript,and theIPACDataManagement IPAC product. Team members(G.Smith, G.Lairmore,J.Lampley,H. study, writtentotapeinFITSformat,areavailableas an for developingthetwo-temperature model,Drs.G.Helouand assistance ofthestaffInfraredProcessingandAnalysis F. Boulangerforusefulcomments onthiswork,E.Barbafor Center (IPAC).Inparticular, theauthorsthankDr.J.Good NGC 6946.—TheIRASimagespresentaquitecentrally NGC 6822.—Thisisanintriguinggroup4galaxy.Al- NGC 5457(M101).—Thisisoneofthemostinteresting The IRASsurfacebrightnessmapsofthegalaxiesthis This catalogcouldnothavebeenproducedwithouttheable Sc dE dE Sc Sc Sc SBc Sc: SO SBb Sb S.../I SO? SO Sc E Type (3) -5 -5 -1A -2 -5 (6) (7)(8) T DisD 6 6X 6A 7A 6 7 3X 5 5B 3B 1A 25 43.4 20.3 10.8 12.3 15.6 15.6 17.5 14.5 9.3 8.7 8.7 8.7 8Í2 8.6 8.1 8.0 RC2 6.6 6.2 6.2 7.6 4.8 6Í5 7.2 3.2 5.2 7.9 5.5 Vol. 68 198 8ApJS. . .68. . .91R No. 2,1988 European SouthernObservatory,andtheMountWilson Palomar Observatory(CaliforniaInstituteofTechnology),the Hanson, R.Beck,E.Erwin,D.Jackson,L.Lloyd,and Las CampanasObservatories(CarnegieInstitutionof Urban) fortheirdataprocessingsupport.Wethankthe in somecases,predatemoremodemcompilationsofgalaxydiameters.Forthesereasons,themergedcatalogsNilson(1973, large enoughinfraredextentstoresultinanunderestimationoftheirintegratedemissionasreportedthePSCandSSSC. .1973,Ap.J.,182,671. Aaronson, M.,etal.1982,Ap.J.Suppl.,50,241. isophotal diameterasreportedinRC2isfistedcolumn(8). is fromESO.Column(7)reportsD¿,theselectioncatalogisophotalmajordiameterconvertedtoDscale ofRC2.The de Jong,T.,Clegg,P.E.,Soifer,B.Rowan-Robinson,M.,Habing, equatorial coordinates(equinox1950)asfistedintheselectioncatalogor,forfollowedby“D,”from Dresseland optically largegalaxiesarepresentedinTable8.Column(1)isthecatalogidentificationofgalaxy—theUGC (U)number, RC2 makesnoattemptatcompleteness,andthediametersareweightedmeansofobtainedfromcatalogswhich, Habing, H.J.,etal.1984,Ap.J.{Letters),278,L59. de Vaucouleurs,G.,A.,andCorwin,H.Jr.1976, Chester, T.1985,inLightonDarkMatter,ed.F.P.Israel(Dordrecht: Burstein, D.,andHeiles,C.1984,Ap.J.Suppl.,54,33. Condon (1976).Column(5)isthemorphologicalclassificationaslistedinselectioncatalog.The classification abbreviated ESO(E)designation,orMCG(M)name.Column(2)istheRC2designation.Columns(3)and(4)give theoptical galaxies hstedinRC2withdiameterslessthan8'hadconvertedgreatertheselectionlimit.Theseadditional and ESO.FivelargegalaxiesnotcontainedinRC2onegalaxywithoutalisteddiameterwerefound.Fifty-five to obtainnonredundantall-skycoverageisdiscussedintheExtragalacticCatalog.) 1974, hereafterUGCandUGCA,respectively),Lauberts(1982,ESO),Vorontsov-Velyaminovetal.(1962, Huchtmeier, W.K.,Richter,O.G.,Bohnenstengel,H.D.,andHauschildt, Huchra, J.A.,Davis.D.,Latham,andTonry,1983,Ap.Suppl., Hodge, P.W.1963,A.J.,68,691. Helou, G.,Khan,I.,Malek,L.,andBoehmer,L.1987,Ap.J.Suppl., Gallagher, J.S.,andMould,R.1981,Ap.{Letters),244,L3. Dressel, L.L.,andCondon,J.1976,Ap.Suppl.,31,187 Cataloged GalaxiesandQuasarsObservedintheIRASSurvey.1985, as codedinRC2aTindexandbarparameterletterisfistedcolumn(6).FortheESOgalaxiesnot theTindex 1963-1974, hereafterMCG)weresearchedforpossiblecandidategalaxiesnotselectedfromRC2.(Themergingofthesecatalogs IRAS CatalogsandAtlases,ExplanatorySupplement.1985,ed.C. A. Hummel, E.1980,Astr.Ap.Suppl.,41,151. IRAS PointSourceCatalog.1985,JointScienceWorkingGroup Kraan-Korteweg, R.C.,andTammann,G.A.1979,Astr.Nach., 300, IRAS SmallScaleStructuresCatalog.1986,preparedbyG.Helouand D. 25 T. deJong:UniversiteitAmsterdam,SterrenkundigInstituut, Roetersstraat15,1018WB,Amsterdam,TheNetherlands H. J.Habing:SterrewachtLeiden, P.O.Box9513,2300RA,Leiden,TheNetherlands G. NeugebauerandB.T.Soifer: CaliforniaInstituteofTechnology,Downs320-47, Pasadena, CA91125 Pasadena, CA91125 E. L.Kopan,CarolJ.Lonsdale, L.A.Lloyd,andW.Rice:IPAC,MailCode100-22, CaliforniaInstituteofTechnology, JPL) (ExtragalacticCatalog). prepared byC.J.Lonsdale,G.Helou,Good,andW.Rice(Pasadena: Texas Press)(RC2). {Letters), 278,L67. Reidel), p.3. 52, 89. Second ReferenceCatalogueofBrightGalaxies(Austin:University H. J.,Houck,J.R.,Aumann,H.,andRaimond,E.1984,Ap submitted. (Washington, DC:GPO){IRASSupplement). M. 1983,ESOPreprintNo.250. Walker (Washington,DC:GPO)(SSSC). (Washington, DC:GPO)(PSC). Beichman, G.Neugebauer,H.J.Habing,P.E.Clegg,andT.Chester 181. As discussedin§I,amajorobjectiveofthisstudyistoreportglobalIRASfluxdensitiesallobservedgalaxieslikelyhave Diameters listedinthesecatalogswereconvertedtotheZ>scaleofRC2usingtransformationequationsreported 25 © American Astronomical Society • Provided by theNASA Astrophysics Data System ADDITIONAL OPTICALLYLARGEGALAXIESLISTEDINUGC,MCG,ANDESO IRAS OBSERVATIONSOFLARGEOPTICALGALAXIES APPENDIX REFERENCES .1974,CatalogofSelectedNon-UGCGalaxies(UppsalaObs. .1966,A.J.,71,922. Nilson, P.1973,UppsalaGeneralCatalogueofGalaxies{UppsalaAstr. Neugebauer, G.,etal.1984,Ap.J.{Letters),278,LI. Low, F.L,etal.1984,Ap.J.{Letters),278,L19. Lauberts, A.1982,TheESO/UppsalaSurveyoftheESO{B)Atlas Young, E.T,Neugebauer,G.,Kopan,L.,Benson,R.D.,Conrow, Walterbos, R.A.M.,andSchwering,P.B.W.1987,Astr.Ap.,inpress. Vorontsov-Velyaminov, B.A.,andKrasnogorskaja,A.1962,Morpho- Vorontsov-Velyaminov, B.A.,andArhipova,V.P.1963-1974,Morpho- Verter, F.1985,Ap.J.Suppl.,57,261. van denBergh,S.1959,Pub.DavidDunlapObs.,2,147(No.5). Rice, W.1988,inpreparation(PaperII). Sandage, A.,andTammann,G.A.1981,ARevisedShapley-AmesCata- play theopticalphotographspresentedinatlas.This Washington) forgrantingpermissiontoreproduceanddis- Soifer, B.T,etal.1984,Ap.J.{Letters),278,L71. Soifer, B.T,Rice,W.,Mould,J.R.,Gillet,F.C.,Rowan-Robinson,M., Schwering, P.B.W.,andIsrael,F.1987,Astr.Ap.Suppl.,inpress. Schwering, P.B.W.1987,Astr.Ap.Suppl.,inpress. Sanders, D.,andYoung,J.1986,privatecommunication. research wassupportedbyTheNationalAeronauticsand Program. Space AdministrationthroughtheIRASExtendedMission log ofBrightGalaxies{CarnegieInst.WashingtonPub.,No.635) (Munich: EuropeanSouthernObservatory)(ESO). (RSA). Rept, No.5)(UGCA). T. P.,Rice,W.,andGregorich,D.1985,AUser'sGuidetotheIRAS (MCG). logical CatalogofGalaxies,Vol.1(Moscow:MoscowStateUniversity) sity) (MCG). logical CatalogofGalaxies,Vols.2-5(Moscow:MoscowStateUniver- and Habing,H.J.1986,Ap.J.,304,651. Obs. Ann.,Vol.6)(UGC). Pointed ObservationProducts,IPACPreprintPre-0008N(POG). 127