J/AJ/148/124ivo://CDS.VizieR/J/AJ/148/124doi:10.26093/cds/vizier.51480124CDSSeale J.P.Meixner M.Sewilo M.Babler B.Engelbracht C.W.Gordon K.,Hony S.Misselt K.Montiel E.Okumura K.Panuzzo P.Roman-Duval J.,Sauvage M.Boyer M.L.Chen C.-H.R.Indebetouw R.Matsuura M.,Oliveira J.M.Srinivasan S.van Loon J.T.Whitney B.Woods P.M.2023-02-14T15:02:42Z2015-02-25T10:57:47ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysgalaxiesinfrared-sourcesmagellanic-cloudsinfrared-photometryObservations from the HERschel Inventory of the Agents of Galaxy Evolution (HERITAGE) have been used to identify dusty populations of sources in the Large and Small Magellanic Clouds (LMC and SMC). We conducted the study using the HERITAGE catalogs of point sources available from the Herschel Science Center from both the Photodetector Array Camera and Spectrometer (PACS; 100 and 160{mu}m) and Spectral and Photometric Imaging Receiver (SPIRE; 250, 350, and 500{mu}m) cameras. These catalogs are matched to each other to create a Herschel band-merged catalog and then further matched to archival Spitzer IRAC and MIPS catalogs from the Spitzer Surveying the Agents of Galaxy Evolution (SAGE) and SAGE-SMC surveys to create single mid- to far-infrared (far-IR) point source catalogs that span the wavelength range from 3.6 to 500{mu}m. There are 35,322 unique sources in the LMC and 7503 in the SMC. To be bright in the FIR, a source must be very dusty, and so the sources in the HERITAGE catalogs represent the dustiest populations of sources. The brightest HERITAGE sources are dominated by young stellar objects (YSOs), and the dimmest by background galaxies. We identify the sources most likely to be background galaxies by first considering their morphology (distant galaxies are point-like at the resolution of Herschel) and then comparing the flux distribution to that of the Herschel Astrophysical Terahertz Large Area Survey (ATLAS) survey of galaxies. We find a total of 9745 background galaxy candidates in the LMC HERITAGE images and 5111 in the SMC images, in agreement with the number predicted by extrapolating from the ATLAS flux distribution. The majority of the Magellanic Cloud-residing sources are either very young, embedded forming stars or dusty clumps of the interstellar medium. Using the presence of 24{mu}m emission as a tracer of star formation, we identify 3518 YSO candidates in the LMC and 663 in the SMC. There are far fewer far-IR bright YSOs in the SMC than the LMC due to both the SMC's smaller size and its lower dust content. The YSO candidate lists may be contaminated at low flux levels by background galaxies, and so we differentiate between sources with a high ("probable") and moderate ("possible") likelihood of being a YSO. There are 2493/425 probable YSO candidates in the LMC/SMC. Approximately 73% of the Herschel YSO candidates are newly identified in the LMC, and 35% in the SMC. We further identify a small population of dusty objects in the late stages of stellar evolution including extreme and post-asymptotic giant branch, planetary nebulae, and supernova remnants. These populations are identified by matching the HERITAGE catalogs to lists of previously identified objects in the literature. Approximately half of the LMC sources and one quarter of the SMC sources are too faint to obtain accurate ample FIR photometry and are unclassified.2014AJ....148..124Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/148/124CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/305 : SAGE LMC and SMC IRAC Source Catalog (IPAC 2009)J/AJ/146/62 : HERschel HERITAGE in Magellanic Clouds (Meixner+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/148/124https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/148/124http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/148/124https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/148/124https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/148/124http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/148/124GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/148/124/LMC_cat (Band-Matched catalog for LMC (classes and photometry))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/148/124/LMC_cat?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/148/124/LMC_cat?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/148/124/LMC_cat?GETtext/xml+votable180.050000true64.79821306-71.304786940.005555555555555556Cone search capability for table J/AJ/148/124/SMC_cat (Band-Matched catalog for SMC (classes and photometry))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/148/124/SMC_cat?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/148/124/SMC_cat?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/148/124/SMC_cat?GETtext/xml+votable180.050000true5.227665-73.890888890.005555555555555556Herschel4/2067-2070 5/8237-8239 8248 8261-8263 8265 8267 8284 8323-8326 8329 8332 8448 6/32927 32943 32947 32970-32971 32996 33000 33039 33043 33140-33142 33144-33145 33285-33287 33291 33308-33310 33313 33315 33324-33325 33336 33796 33800-33802 37418 37504 37506 37512 37514 37536 37538 37544 37546 38912 38914 38920https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/148/124?format=asciiInfrareddefaultJ/AJ/148/124/LMC_catBand-Matched catalog for LMC (classes and photometry)e_F350? S350 source flux uncertaintymJystat.errorfloatnullablef_F350[01234-] S350 source flagmeta.codecharF500? S500 source fluxmJyphot.flux.density;em.mm.400-750GHzfloatnullablee_F500? S500 source flux uncertaintymJystat.errorfloatnullablef_F500[01234-] S500 source flagmeta.codecharIRACSAGE IRAC Designation, SSTISAGEMA_JHHMMSS.ss+DDMMSS.smeta.idcharMIPS24SAGE MIPS 24 micron Designation, SSTM1SAGE[012]_JHHMMSS.ss+DDMMSS.smeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameThe identifying name of the source, JDD.ddddd+DD.dddddmeta.id;meta.maincharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedProbYSO[0/1] HERITAGE probable YSO candidates, 1 for yes, 0 for nometa.codeintPosYSO[0/1] HERITAGE possible YSO candidates, 1 for yes, 0 for nometa.codeintProbDust[0/1] HERITAGE probable YSO candidates, 1 for yes, 0 for nometa.codeintPosDust[0/1] HERITAGE possible YSO candidates, 1 for yes, 0 for nometa.codeintHERGalaxy[0/1] HERITAGE background galaxy candidates, 1 for yes, 0 for nometa.codeintLitClass? Classification(s) of positionally matched literature source (1)src.classcharLitRefReference(s) for positionally matched literature source (1)meta.ref;pos.framecharLitDistDistance(s) between BMC source and literature source (1)arcsecpos.angDistancecharLFIR? Graybody-fit far-IR luminositysolLumphys.luminosity;em.IRintnullablee_LFIR? Uncertainty of graybody-fit far-IR luminosity.solLumstat.errorintnullableTFIR? Graybody-fit far-IR dust temperatureKphys.temperaturefloatnullablee_TFIR? Uncertainty of graybody-fit FIR dust temperatureKstat.errorfloatnullableGroupID? Running identification number specifying group membershipmeta.record;pos.lgintnullableDominant[01-] 1 for dominant source, 0 for notmeta.codecharPointFlag[01-] 1 for point-like, 0 for notmeta.codecharP100NameP100 source name as given in the HERITAGE catalogs (Cat. J/AJ/146/62, lmcp100.dat for LMC, smcp100.dat for SMC)meta.id.assoccharP160NameP160 source name as given in the HERITAGE catalogs (Cat. J/AJ/146/62, lmcp160.dat for LMC, smcp160.dat for SMC)meta.id.assoccharS250NameS250 source name as given in the HERITAGE catalogs (Cat. J/AJ/146/62, lmcp250.dat for LMC, smcp250.dat for SMC)meta.id.assoccharS350NameS350 source name as given in the HERITAGE catalogs (Cat. J/AJ/146/62, lmcp350.dat for LMC, smcp350.dat for SMC)meta.id.assoccharS500NameS500 source name as given in the HERITAGE catalogs (Cat. J/AJ/146/62, lmcp500.dat for LMC, smcp500.dat for SMC)meta.id.assoccharF100? P100 source fluxmJyphot.flux.density;em.IR.60-100umfloatnullablee_F100? P100 source flux uncertaintymJystat.errorfloatnullablef_F100[01234-] P100 source flagmeta.codecharF160? P160 source fluxmJyphot.flux.density;em.mm.1500-3000GHzfloatnullablee_F160? P160 source flux uncertaintymJystat.errorfloatnullablef_F160[01234-] P160 source flagmeta.codecharF250? S250 source fluxmJyphot.flux.density;em.mm.750-1500GHzfloatnullablee_F250? S250 source flux uncertaintymJystat.errorfloatnullablef_F250[01234-] S250 source flagmeta.codecharF350? S350 source fluxmJyphot.flux.density;em.mm.750-1500GHzfloatnullableMIPS70SAGE MIPS 70 micron Designation, SSTM2SAGEC_JHHMMSS.ss+DDMMSS.smeta.idcharSHdist? Distance between Spitzer 24 micron and Herschel sourcesarcsecpos.angDistancefloatnullableF3.6? 3.6 micron source fluxmJyphot.mag;em.IR.3-4umdoublenullablee_F3.6? 3.6 micron source flux uncertaintymJystat.errordoublenullableF4.5? 4.5 micron source fluxmJyphot.mag;em.IR.4-8umdoublenullablee_F4.5? 4.5 micron source flux uncertaintymJystat.errordoublenullableF5.8? 5.8 micron source fluxmJyphot.flux.density;em.IR.4-8umdoublenullablee_F5.8? 5.8 micron source flux uncertaintymJystat.errordoublenullableF8.0? 8.0 micron source fluxmJyphot.flux.density;em.IR.8-15umdoublenullablee_F8.0? 8.0 micron source flux uncertaintymJystat.errordoublenullableF24? 24 micron source fluxmJyphot.flux.density;em.IR.15-30umdoublenullablee_F24? 24 micron source flux uncertaintymJystat.errordoublenullableF70? 70 micron source fluxmJyphot.flux.density;em.IR.30-60umdoublenullablee_F70? 70 micron source flux uncertaintymJystat.errordoublenullableJ/AJ/148/124/SMC_catBand-Matched catalog for SMC (classes and photometry)P160NameP160 source name as given in the HERITAGE catalogs (Cat. J/AJ/146/62, lmcp160.dat for LMC, smcp160.dat for SMC)meta.id.assoccharS250NameS250 source name as given in the HERITAGE catalogs (Cat. J/AJ/146/62, lmcp250.dat for LMC, smcp250.dat for SMC)meta.id.assoccharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameThe identifying name of the source, JDD.ddddd+DD.dddddmeta.id;meta.maincharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainProbYSO[0/1] HERITAGE probable YSO candidates, 1 for yes, 0 for nometa.codeintPosYSO[0/1] HERITAGE possible YSO candidates, 1 for yes, 0 for nometa.codeintProbDust[0/1] HERITAGE probable YSO candidates, 1 for yes, 0 for nometa.codeintPosDust[0/1] HERITAGE possible YSO candidates, 1 for yes, 0 for nometa.codeintHERGalaxy[0/1] HERITAGE background galaxy candidates, 1 for yes, 0 for nometa.codeintLitClass? Classification(s) of positionally matched literature source (1)src.classcharLitRefReference(s) for positionally matched literature source (1)meta.ref;pos.framecharLitDistDistance(s) between BMC source and literature source (1)arcsecpos.angDistancecharLFIR? Graybody-fit far-IR luminositysolLumphys.luminosity;em.IRintnullablee_LFIR? Uncertainty of graybody-fit far-IR luminosity.solLumstat.errorintnullableTFIR? Graybody-fit far-IR dust temperatureKphys.temperaturefloatnullablee_TFIR? Uncertainty of graybody-fit FIR dust temperatureKstat.errorfloatnullableGroupID? Running identification number specifying group membershipmeta.record;pos.lgintnullableDominant[01-] 1 for dominant source, 0 for notmeta.codecharPointFlag[01-] 1 for point-like, 0 for notmeta.codecharS350NameS350 source name as given in the HERITAGE catalogs (Cat. J/AJ/146/62, lmcp350.dat for LMC, smcp350.dat for SMC)meta.id.assoccharS500NameS500 source name as given in the HERITAGE catalogs (Cat. J/AJ/146/62, lmcp500.dat for LMC, smcp500.dat for SMC)meta.id.assoccharF100? P100 source fluxmJyphot.flux.density;em.IR.60-100umfloatnullablee_F100? P100 source flux uncertaintymJystat.errorfloatnullablef_F100[01234-] P100 source flagmeta.codecharF160? P160 source fluxmJyphot.flux.density;em.mm.1500-3000GHzfloatnullablee_F160? P160 source flux uncertaintymJystat.errorfloatnullablef_F160[01234-] P160 source flagmeta.codecharF250? S250 source fluxmJyphot.flux.density;em.mm.750-1500GHzfloatnullablee_F250? S250 source flux uncertaintymJystat.errorfloatnullablef_F250[01234-] S250 source flagmeta.codecharF350? S350 source fluxmJyphot.flux.density;em.mm.750-1500GHzfloatnullablee_F350? S350 source flux uncertaintymJystat.errorfloatnullablef_F350[01234-] S350 source flagmeta.codecharF500? S500 source fluxmJyphot.flux.density;em.mm.400-750GHzfloatnullablee_F500? S500 source flux uncertaintymJystat.errorfloatnullablef_F500[01234-] S500 source flagmeta.codecharIRACSAGE IRAC Designation, SSTISAGEMA_JHHMMSS.ss+DDMMSS.smeta.idcharMIPS24SAGE MIPS 24 micron Designation, SSTM1SAGE[012]_JHHMMSS.ss+DDMMSS.smeta.idcharMIPS70SAGE MIPS 70 micron Designation, SSTM2SAGEC_JHHMMSS.ss+DDMMSS.smeta.idcharSHdist? Distance between Spitzer 24 micron and Herschel sourcesarcsecpos.angDistancefloatnullableF3.6? 3.6 micron source fluxmJyphot.mag;em.IR.3-4umdoublenullablee_F3.6? 3.6 micron source flux uncertaintymJystat.errordoublenullableF4.5? 4.5 micron source fluxmJyphot.mag;em.IR.4-8umdoublenullablee_F4.5? 4.5 micron source flux uncertaintymJystat.errordoublenullableF5.8? 5.8 micron source fluxmJyphot.flux.density;em.IR.4-8umdoublenullablee_F5.8? 5.8 micron source flux uncertaintymJystat.errordoublenullableF8.0? 8.0 micron source fluxmJyphot.flux.density;em.IR.8-15umdoublenullablee_F8.0? 8.0 micron source flux uncertaintymJystat.errordoublenullableF24? 24 micron source fluxmJyphot.flux.density;em.IR.15-30umdoublenullablee_F24? 24 micron source flux uncertaintymJystat.errordoublenullableF70? 70 micron source fluxmJyphot.flux.density;em.IR.30-60umdoublenullablee_F70? 70 micron source flux uncertaintymJystat.errordoublenullableP100NameP100 source name as given in the HERITAGE catalogs (Cat. J/AJ/146/62, lmcp100.dat for LMC, smcp100.dat for SMC)meta.id.assoccharJ/AJ/148/124/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.notecharBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar