J/ApJS/186/259ivo://CDS.VizieR/J/ApJS/186/259doi:10.26093/cds/vizier.21860259CDSRebull L.M.Padgett D.L.McCabe C.-E.Hillenbrand L.A.,Stapelfeldt K.R.Noriega-Crespo A.Carey S.J.Brooke T.Huard T.,Terebey S.Audard M.Monin J.-L.Fukagawa M.Gudel M.Knapp G.R.,Menard F.Allen L.E.Angione J.R.Baldovin-Saavedra C.Bouvier J.,Briggs K.Dougados C.Evans N.J.Flagey N.Guieu S.Grosso N.,Glauser A.M.Harvey P.Hines D.Latter W.B.Skinner S.L.Strom S.,Tromp J.Wolf S.2017-06-02T08:37:24Z2013-10-07T08:50:01ZCDS support team

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

cds-question@unistra.frmolecular-cloudsinfrared-photometryyoung-stellar-objectsastronomical-object-identificationWe report on the properties of pre-main-sequence objects in the Taurus molecular clouds as observed in seven mid- and far-infrared bands with the Spitzer Space Telescope. There are 215 previously identified members of the Taurus star-forming region in our ~44deg^2^ map; these members exhibit a range of Spitzer colors that we take to define young stars still surrounded by circumstellar dust (noting that ~20% of the bona fide Taurus members exhibit no detectable dust excesses). We looked for new objects in the survey field with similar Spitzer properties, aided by extensive optical, X-ray, and ultraviolet imaging, and found 148 new candidate members of Taurus. We have obtained follow-up spectroscopy for about half the candidate sample, thus far confirming 34 new members, three probable new members, and 10 possible new members, an increase of 15%-20% in Taurus members. Of the objects for which we have spectroscopy, seven are now confirmed extragalactic objects, and one is a background Be star. The remaining 93 candidate objects await additional analysis and/or data to be confirmed or rejected as Taurus members. Most of the new members are Class II M stars and are located along the same cloud filaments as the previously identified Taurus members. Among non-members with Spitzer colors similar to young, dusty stars are evolved Be stars, planetary nebulae, carbon stars, galaxies, and active galactic nuclei.2010ApJS..186..259Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/186/259CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/ApJ/745/119 : Close companions to young stars. I. ChaI+Tau (Nguyen+, 2012)J/ApJ/745/19 : Binary systems in Taurus-Auriga (Kraus+, 2012)J/ApJS/196/4 : New young star candidates in Taurus-Auriga (Rebull+, 2011)J/ApJ/720/480 : DISCS. I. Taurus protoplanetary disk data (Oberg+, 2010)J/A+A/519/A83 : T Tau stars toward the Taurus-Auriga region (Takita+ 2010)J/AJ/139/1338 : UV-selected stars in Tau and Upper Sco (Findeisen+, 2010)J/ApJ/703/1964 : Spectra of three nearby star-forming regions (Furlan+, 2009)J/PASJ/60/209 : Faint companions around YSOs in TMC (Itoh+, 2008)J/ApJS/176/457 : Taurus dark cloud background star catalog (Shenoy+, 2008)J/A+A/468/353 : XMM-Newton Extended Survey of Taurus (Guedel+, 2007)J/AJ/132/2665 : QUEST2 BRI photometry of Taurus-Auriga PMS (Slesnick+, 2006)J/ApJ/645/676 : Spatial distribution of BD* in Taurus (Luhman+, 2006)J/ApJ/578/914 : Low-mass stars in Taurus (Hartmann, 2002)J/ApJ/581/1194 : Taurus-Auriga PMS stars ages and Teff (Palla+, 2002)J/A+AS/132/173 : New weak-line T Tauri stars in Taurus-Auriga (Li+ 1998)J/A+AS/124/449 : Young stars south of Taurus-Auriga (Magazzu+ 1997)J/A+A/312/439 : New T Tauri stars in Taurus-Auriga (Wichmann+, 1996)J/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)J/A+AS/101/485 : Multisite UBVRI photometry in Tau-Aur cloud (Bouvier+ 1993)http://irsa.ipac.caltech.edu/data/SPITZER/Taurus/ : Spitzer Space Telescopehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/186/259https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/186/259http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/186/259https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/186/259https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/186/259http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/186/259GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/186/259/known (Previously identified Taurus member Spitzer measurements and properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/186/259/known?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/186/259/known?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/186/259/known?GETtext/xml+votable180.050000true63.3087528.3194440.005555555555555556Cone search capability for table J/ApJS/186/259/table8 (List of new confirmed, probable, possible, and pending Taurus members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/186/259/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/186/259/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/186/259/table8?GETtext/xml+votable180.050000true63.9131780628.316281940.005555555555555556Cone search capability for table J/ApJS/186/259/table11 (*Individual miscellaneous non-YSO objects with YSO-like colors)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/186/259/table11?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/186/259/table11?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/186/259/table11?GETtext/xml+votable180.050000true64.90041727.2919440.005555555555555556Cone search capability for table J/ApJS/186/259/new (New candidate Taurus member Spitzer measurements and properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/186/259/new?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/186/259/new?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/186/259/new?GETtext/xml+votable180.050000true62.9987529.710.0055555555555555564/67 5/257 261 262 263 265 267 292 6/1035 1036 1037 1039 1041 1042 1043 1057 1058 1059 1065 1067 1090 1096 1128 1130 1156 1157 1159 1176 242541.0763920601544068e-21 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/186/259?format=asciiInfrareddefaultJ/ApJS/186/259/knownPreviously identified Taurus member Spitzer measurements and propertiesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSSTSpitzer Tau name (HHMMSS.s+DDMMSS; J2000)meta.id;meta.maincharCNameCommon namemeta.id.crosscharl_[3.6]Limit flag on [3.6]meta.code.errorchar[3.6][6.6/16.3]? Spitzer/IRAC 3.6um band magnitude (1)magphot.mag;em.IR.3-4umfloatnullablee_[3.6]? Uncertainty in [3.6]magstat.errorfloatnullablel_[4.5]Limit flag on [4.5]meta.code.errorchar[4.5][6.1/15.6]? Spitzer/IRAC 4.5um band magnitude (1)magphot.mag;em.IR.4-8umfloatnullablee_[4.5]? Uncertainty in [4.5]magstat.errorfloatnullablel_[5.8]Limit flag on [5.8]meta.code.errorchar[5.8][3.4/14.7]? Spitzer/IRAC 5.8um band magnitude (1)magphot.flux.density;em.IR.4-8umfloatnullablee_[5.8]? Uncertainty in [5.8]magstat.errorfloatnullablel_[8.0]Limit flag on [8.0]meta.code.errorchar[8.0][3.5/14.4]? Spitzer/IRAC 8.0um band magnitude (1)magphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? Uncertainty in [8]magstat.errorfloatnullablel_[24]Limit flag on [24]meta.code.errorchar[24][0.4/11.1]? Spitzer/MIPS 24um band magnitude (1)magphot.flux.density;em.IR.15-30umfloatnullablee_[24]? Uncertainty in [24]magstat.errorfloatnullablel_[70]Limit flag on [70]meta.code.errorchar[70][-2.6/3.2]? Spitzer/MIPS 70um band magnitude (1)magphot.flux.density;em.IR.30-60umfloatnullablee_[70]? Uncertainty in [70]magstat.errorfloatnullablel_[160]Limit flag on [160]meta.code.errorchar[160][-5.5/2.4]? Spitzer/MIPS 160um band magnitude (1)magphot.flux.density;em.mm.1500-3000GHzfloatnullablee_[160]? Uncertainty in 160magmagstat.errorfloatnullable24/70Identification in 24/70 micron color-magnitude diagram (no, yes or yes-faint)meta.codecharKS/24Identification in Ks/70 micron color-magnitude diagram (no, yes or yes-faint)meta.codechar8/24Identification in 8/24 micron color-magnitude diagram (no, yes or yes-faint)meta.codechar4.5/8Identification in 4.5/8 micron color-magnitude diagram (no, yes or yes-faint)meta.codecharIRACIdentification in IRAC color-color diagram (yes or no)meta.codecharM1[,b-i] Additional note(s) on measurements (2)meta.notechar2MCross-match with the 2MASS catalog (II/246) within 3"meta.ref.urlintnullablec2dCatThe c2d (Harvey+ 2007, Cat. J/ApJ/663/1149) category (not yso, star or yso)src.classcharGutCatThe Gutermuth+ (2008, Cat. J/ApJ/674/336) category (class II, contam., embedded or star)src.classcharClassOur class (I, II, III or flat)src.classcharSpTypeMK Spectral typesrc.spTypecharEW[-296/5.5]? Our H{alpha} equivalent width in units of Angstroms0.1nmspect.line.eqWidth;em.line.Halpha;arith.ratiofloatnullableAV[0/24]? The V band extinctionmagphys.absorption;em.opt.VfloatnullablelogL*[-2.9/2]? Star luminosity (G2)log(solLum)phys.luminosityfloatnullablel_LIR/LLimit flag on LIR/L (G2)meta.code.errorcharLIR/L? Ratio of IR to total luminositiesphys.luminosity;arith.ratiodoublenullableM2[ a-d,] Additional note(s) (3)meta.notechar_RAPositions from SST names (right ascension part)degpos.eq.ra;meta.main_DEPositions from SST names (declination part)degpos.eq.dec;meta.mainJ/ApJS/186/259/table8List of new confirmed, probable, possible, and pending Taurus membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMmMembership status (1)meta.code.membercharSSTSST Tau name (HHMMSS.s+DDMMSS; J2000)meta.id;meta.maincharCNameCommon namemeta.id.crosscharRAJ2000[62.998/72.424] Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[22.206/29.711] Declination (J2000)degpos.eq.dec;meta.mainRankOur rank (A+ to C-) (G1)meta.code.qualcharDist[0.11/120.82] Distance (2)arcminpos.angDistancefloat2MCross-match with the 2MASS catalog (II/246) within 1"meta.ref.urlintnullableJ/ApJS/186/259/table11*Individual miscellaneous non-YSO objects with YSO-like colorsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClassObject type (1)src.classcharSSTSST Tau name (HHMMSS.s+DDMMSS; J2000)meta.id;meta.maincharONameOther name(s)meta.id.crosscharNotesNotesmeta.notechar2MCross-match with the 2MASS catalog (II/246) within 3"meta.ref.urlintnullable_RAPositions from SST names (right ascension part)degpos.eq.ra;meta.main_DEPositions from SST names (declination part)degpos.eq.dec;meta.mainJ/ApJS/186/259/newNew candidate Taurus member Spitzer measurements and propertiesSimbadNameSimbad column added by the CDSmeta.idcharl_[70]Limit flag on [70]meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSSTSpitzer Tau name (HHMMSS.s+DDMMSS; J2000)meta.id;meta.maincharprimaryMSimbad column added by the CDSmeta.code.membercharCNameCommon namemeta.id.crosscharl_[3.6]Limit flag on [3.6]meta.code.errorchar[3.6][6.6/16.3]? Spitzer/IRAC 3.6um band magnitude (1)magphot.mag;em.IR.3-4umfloatnullablee_[3.6]? Uncertainty in [3.6]magstat.errorfloatnullablel_[4.5]Limit flag on [4.5]meta.code.errorchar[4.5][6.1/15.6]? Spitzer/IRAC 4.5um band magnitude (1)magphot.mag;em.IR.4-8umfloatnullablee_[4.5]? Uncertainty in [4.5]magstat.errorfloatnullablel_[5.8]Limit flag on [5.8]meta.code.errorchar[5.8][3.4/14.7]? Spitzer/IRAC 5.8um band magnitude (1)magphot.flux.density;em.IR.4-8umfloatnullablee_[5.8]? Uncertainty in [5.8]magstat.errorfloatnullablel_[8.0]Limit flag on [8.0]meta.code.errorchar[8.0][3.5/14.4]? Spitzer/IRAC 8.0um band magnitude (1)magphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? Uncertainty in [8]magstat.errorfloatnullablel_[24]Limit flag on [24]meta.code.errorchar[24][0.4/11.1]? Spitzer/MIPS 24um band magnitude (1)magphot.flux.density;em.IR.15-30umfloatnullablee_[24]? Uncertainty in [24]magstat.errorfloatnullable[70][-2.6/3.2]? Spitzer/MIPS 70um band magnitude (1)magphot.flux.density;em.IR.30-60umfloatnullablee_[70]? Uncertainty in [70]magstat.errorfloatnullablel_[160]Limit flag on [160]meta.code.errorchar[160][-5.5/2.4]? Spitzer/MIPS 160um band magnitude (1)magphot.flux.density;em.mm.1500-3000GHzfloatnullablee_[160]? Uncertainty in 160magmagstat.errorfloatnullable24/70Identification in 24/70 micron color-magnitude diagram (no, yes or yes-faint)meta.codecharKS/24Identification in Ks/70 micron color-magnitude diagram (no, yes or yes-faint)meta.codechar8/24Identification in 8/24 micron color-magnitude diagram (no, yes or yes-faint)meta.codechar4.5/8Identification in 4.5/8 micron color-magnitude diagram (no, yes or yes-faint)meta.codecharIRACIdentification in IRAC color-color diagram (yes or no)meta.codecharM1[,b-i] Additional note(s) on measurements (2)meta.notechar2MCross-match with the 2MASS catalog (II/246) within 3"meta.ref.urlintnullableRankOur rank (A+ to C-) (G1)meta.code.qualcharc2dCatThe c2d (Harvey+ 2007, Cat. J/ApJ/663/1149) categorysrc.classcharGutCatThe Gutermuth+ (2008, Cat. J/ApJ/674/336) categorysrc.classcharClassOur class (I, II, III or flat)src.classcharSpTypeMK Spectral typesrc.spTypecharEW[-489.1/11.5]? Our H{alpha} equivalent width in Angstrom units0.1nmspect.line.eqWidth;em.line.HalphafloatnullableAV[0/22.2]? The V band extinctionmagphys.absorption;em.opt.VfloatnullablelogL*[-2.4/2.1]? Star luminosity (G2)log(solLum)phys.luminosityfloatnullablel_LIR/LLimit flag on LIR/Lmeta.code.errorcharLIR/L? Ratio of IR to total luminosities (G2)phys.luminosity;arith.ratiodoublenullableMmclassAdopted membership classificationmeta.notecharNote2[ a-o,] Additional note(s) (4)meta.notechar_RAPositions from SST names (right ascension part)degpos.eq.ra;meta.main_DEPositions from SST names (declination part)degpos.eq.dec;meta.mainJ/ApJS/186/259/table12*Literature non-members regarded as potential new membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSSTSST Tau name (HHMMSS.s+DDMMSS; J2000)meta.id;meta.maincharONameOther namemeta.id.crosscharNotesNotesmeta.notechar