J/ApJ/749/177ivo://CDS.VizieR/J/ApJ/749/177doi:10.26093/cds/vizier.17490177CDSNeugent K.F.Massey P.Skiff B.Meynet G.2019-08-21T11:07:14Z2014-01-15T11:41:08ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsgiant-starsradial-velocitystellar-spectral-typesinfrared-astronomyspectroscopyastronomical-object-identificationDue to their transitionary nature, yellow supergiants (YSGs) provide a critical challenge for evolutionary modeling. Previous studies within M31 and the Small Magellanic Cloud show that the Geneva evolutionary models do a poor job at predicting the lifetimes of these short-lived stars. Here, we extend this study to the Large Magellanic Cloud (LMC) while also investigating the galaxy's red supergiant (RSG) content. This task is complicated by contamination by Galactic foreground stars that color and magnitude criteria alone cannot weed out. Therefore, we use proper-motions and the LMC's large systemic radial velocity (~278km/s) to separate out these foreground dwarfs. After observing nearly 2000 stars, we identified 317 probable YSGs, 6 possible YSGs, and 505 probable RSGs. Foreground contamination of our YSG sample was ~80%, while that of the RSG sample was only 3%. By placing the YSGs on the Hertzsprung-Russell diagram and comparing them against the evolutionary tracks, we find that new Geneva evolutionary models do an exemplary job at predicting both the locations and the lifetimes of these transitory objects.2012ApJ...749..177Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/749/177CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/322 : OGLE-III. Magellanic Clouds stellar proper motions (Poleski+, 2012)I/305 : The Guide Star Catalog, Version 2.3.2 (GSC2.3) (STScI, 2006)II/264 : ASAS Variable Stars in Southern hemisphere (Pojmanski+, 2002-2005)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/236 : UBVR CCD survey of the Magellanic clouds (Massey+, 2002)III/150 : Perkins Revised MK Types for the Cooler Stars (Keenan+ 1989)III/147 : Studies of LMC stellar content (Rousseau+ 1978)J/ApJ/727/53 : Red supergiant stars in the LMC. I. (Yang+, 2011)J/ApJ/719/1784 : Yellow supergiants in the SMC (Neugent+, 2010)J/AcA/59/239 : VI LCs of LMC long-period variables (Soszynski+, 2009)J/ApJ/703/441 : Yellow supergiants in M31 (Drout+, 2009)J/AN/320/105 : Spectrophot. of 26 LMC supergiants (Oestreicher+ 1999)J/MNRAS/289/729 : BVRIJHK phot. of red LMC supergiants (Oestreicher+ 1997)J/AJ/126/2867 : Red supergiants in Magellanic Clouds (Massey+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/749/177https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/749/177http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/749/177https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/749/177https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/749/177http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/749/177GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/749/177/table2 (Properties of observed Red Supergiant candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/749/177/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/749/177/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/749/177/table2?GETtext/xml+votable180.050000true70.92875-67.78208330.005555555555555556Cone search capability for table J/ApJ/749/177/table1 (Properties of observed Yellow Supergiant candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/749/177/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/749/177/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/749/177/table1?GETtext/xml+votable180.050000true69.1527083-69.04444440.005555555555555556Cone search capability for table J/ApJ/749/177/table3 (LMC yellow supergiants not observed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/749/177/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/749/177/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/749/177/table3?GETtext/xml+votable180.050000true73.559375-69.21019440.005555555555555556Cone search capability for table J/ApJ/749/177/table4 (Derived properties of LMC yellow and red supergiants)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/749/177/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/749/177/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/749/177/table4?GETtext/xml+votable180.050000true76.4812917-67.88633330.0055555555555555564/2068 5/8262 8263 8268 8269 8276 8278 8280 8281 6/33039 33046 33047 33061 33081 33084 33085 33128 33129 331368.650015785639275e-20 9.710690472292815e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/749/177?format=asciiInfrareddefaultJ/ApJ/749/177/table2Properties of observed Red Supergiant candidatesSpTMK spectral typesrc.spTypecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASSThe 2MASS identifier (JHHMMSSss+DDMMSSs)meta.id;meta.maincharprimaryRStar in the sample of the confirmed LMC reddest supergiants (table 5)meta.ref.urlcharn_2MASS[ab] Several observations or literature (1)meta.notecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainM2002? Massey 2002, Cat. II/236 designation (2)meta.id.crossintnullableKsmag[5.1/12.6]? 2MASS Ks band magnitudemagphot.mag;em.IR.KfloatnullableJ-Ks[0/1.7] 2MASS (J-Ks) color indexmagphot.color;em.IR.J;em.IR.KfloatVmag[8/17]? The V band magnitudemagphot.mag;em.opt.Vfloatnullabler_Vmag[c] Vmag and (B-V) from literature (3)meta.ref;pos.framecharB-V[-0.2/3.1]? The (B-V) color indexmagphot.color;em.opt.B;em.opt.VfloatnullableV-R[0/2]? The (V-R) color indexmagphot.color;em.opt.V;em.opt.RfloatnullableRV[-57.1/401] Radial velocitykm/sphys.veloc;pos.heliocentricfloatr[12/168] Tonry & Davis 1979AJ.....84.1511T cross-correlation r parameterstat.fit.paramfloatCat[1/3] Category (1=ok) (4)meta.code.classintPDisplay the derived properties for this supergiant from table 4meta.ref.urlcharr_SpT? Reference for SpT (see refs.dat file)meta.ref;pos.frameintnullableCommAdditional comment or identificationmeta.notechar2MDisplay the 2MASS data for this star (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/749/177/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.noteintBibCodeBibcodemeta.bib.bibcodecharAutAuthor's name(s)meta.bib.authorcharCommVizieR catalog referencemeta.id;meta.datasetcharJ/ApJ/749/177/table1Properties of observed Yellow Supergiant candidatesSpTMK spectral typesrc.spTypecharCat[1/3] Category (1=ok) (4)meta.code.classintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASSThe 2MASS identifier (JHHMMSSss+DDMMSSs)meta.id;meta.maincharn_2MASS[ab] Several observations or literature (1)meta.notecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainM2002? Massey 2002, Cat. II/236 designation (2)meta.id.crossintnullableKsmag[5.1/12.6]? 2MASS Ks band magnitudemagphot.mag;em.IR.KfloatnullableJ-Ks[0/1.7] 2MASS (J-Ks) color indexmagphot.color;em.IR.J;em.IR.KfloatVmag[8/17]? The V band magnitudemagphot.mag;em.opt.Vfloatnullabler_Vmag[c] Vmag and (B-V) from literature (3)meta.ref;pos.framecharB-V[-0.2/3.1]? The (B-V) color indexmagphot.color;em.opt.B;em.opt.VfloatnullableV-R[0/2]? The (V-R) color indexmagphot.color;em.opt.V;em.opt.RfloatnullableRV[-57.1/401] Radial velocitykm/sphys.veloc;pos.heliocentricfloatr[12/168] Tonry & Davis 1979AJ.....84.1511T cross-correlation r parameterstat.fit.paramfloatPDisplay the derived properties for this supergiant from table 4meta.ref.urlcharr_SpT? Reference for SpT (see refs.dat file)meta.ref;pos.frameintnullableCommAdditional comment or identificationmeta.notechar2MDisplay the 2MASS data for this star (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/749/177/table3LMC yellow supergiants not observedKsmag[7.4/13.5] 2MASS Ks-band magnitudemagphot.mag;em.IR.KfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS name (JHHMMSSss+DDMMSSs)meta.id;meta.maincharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainJ-Ks[0.04/0.6] 2MASS (J-Ks) color indexmagphot.color;em.IR.J;em.IR.KfloatVmag[9.7/13.2] V-band magnitudemagphot.mag;em.opt.VfloatSpTMK spectral type from literaturesrc.spTypecharf_SpT[1/5] Reference (1)meta.codeintANameAlternative(s) name(s)meta.idcharCommCommentsmeta.notechar2MDisplay the 2MASS data for this star (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/749/177/table4Derived properties of LMC yellow and red supergiantsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASSThe 2MASS identifier (JHHMMSSss+DDMMSSs)meta.id;meta.maincharCat[1/2] Category, 1=ok (1)meta.code.classintlogTe[3.4/4.1] Log of the effective temperaturelog(K)phys.temperature.effectivefloatlogL[2.6/5.8] Log of the luminositylog(solLum)phys.luminosityfloatCol[RY] Color; Y=Yellow, R=Redmeta.codecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from 2MASS names (right ascension part)degpos.eq.ra;meta.main_DEPositions from 2MASS names (declination part)degpos.eq.dec;meta.mainJ/ApJ/749/177/table5Reddest confirmed LMC members in our sample2MASSThe 2MASS identifier (JHHMMSSss+DDMMSSs)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKsmag[7.4/10.3] 2MASS Ks band magnitudemagphot.mag;em.IR.KfloatJ-Ks[1/2] 2MASS (J-Ks) color indexmagphot.color;em.IR.J;em.IR.KfloatVmag[12/17]? The V band magnitude (1)magphot.mag;em.opt.Vfloatnullablef_Vmag[fgh] Flag on Vmag (2)meta.codecharV-Ks[4/7]? The (V-Ks) color indexmagphot.color;em.opt.V;em.IR.KfloatnullableM2002? Massey 2002, Cat. II/236, designationmeta.id.crossintnullable10um[AIM ] 10{mu}m detection in AKARI, IRAS, MSXmeta.codecharSpTMK spectral type; same as in Table 1src.spTypecharVarVariability (4)meta.code;src.varcharOIDOther identifiermeta.idchar