J/ApJS/216/26ivo://CDS.VizieR/J/ApJS/216/26doi:10.26093/cds/vizier.22160026CDSGomez de Castro A.I.Lopez-Santiago J.Lopez-Martinez F.Sanchez N.,Sestito P.de Castro E.Cornide M.Gestoso J.Y.2020-07-01T11:16:56Z2015-03-16T12:37:30ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectsultraviolet-photometryinfrared-photometryvisible-astronomyphotometryIn this work, we identify 63 bona fide new candidates to T Tauri stars (TTSs) in the Taurus-Auriga region, using its ultraviolet excess as our baseline. The initial data set was defined from the GALEX all sky survey (AIS). The GALEX satellite obtained images in the near-ultraviolet (NUV) and far-ultraviolet (FUV) bands where TTSs show a prominent excess compared with main-sequence or giants stars. GALEX AIS surveyed the Taurus-Auriga molecular complex, as well as a fraction of the California Nebula and the Perseus complex; bright sources and dark clouds were avoided. The properties of TTSs in the ultraviolet (GALEX), optical (UCAC4), and infrared (2MASS) have been defined using the TTSs observed with the International Ultraviolet Explorer reference sample. The candidates were identified by means of a mixed ultraviolet-optical-infrared excess set of colors; we found that the FUV-NUV versus J-K color-color diagram is ideally suited for this purpose. From an initial sample of 163313 bona fide NUV sources, a final list of 63 new candidates to TTSs in the region was produced. The search procedure has been validated by its ability to detect all known TTSs in the area surveyed: 31 TTSs. Also, we show that the weak-lined TTSs are located in a well-defined stripe in the FUV-NUV versus J-K diagram. Moreover, in this work, we provide a list of TTSs photometric standards for future GALEX-based studies of the young stellar population in star forming regions.2015ApJS..216...26Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/216/26CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/322 : UCAC4 Catalogue (Zacharias+, 2012)II/312 : GALEX-DR5 (GR5) sources from AIS and MIS (Bianchi+ 2011)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/ApJ/756/171 : HST FUV survey of H2 emission of T Tau stars (France+, 2012)J/ApJ/744/121 : Far-UV spectroscopy of T Tau stars (Yang+, 2012)J/AJ/142/138 : All-sky catalog of bright M dwarfs (Lepine+, 2011)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/A+A/438/769 : PMS stars Proper Motion Catalog (Ducourant+, 2005)J/A+AS/132/173 : New weak-line T Tauri stars in Taurus-Auriga (Li+ 1998)J/A+A/312/439 : New T Tauri stars in Taurus-Auriga (Wichmann+, 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/216/26https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/216/26http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/216/26https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/216/26https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/216/26http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/216/26GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/216/26/table2 (T Tauri stars (TTSs) and candidates found in the Taurus molecular cloud (TMC) from the GALEX AIS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/216/26/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/216/26/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/216/26/table2?GETtext/xml+votable180.050000true60.1764911128.870568890.0055555555555555566/371 1031 1048 1050 1059 1061 1071 1073 1075 1098 1101 1103 1105 1106 1107 1111 1113 1114 1115 1116 1117 1126 1133 1136 1137 1139 1140 1141 1142 1144 1146 1148 1149 1150 1152 1156 1159 1165 1170 1172 1176 1183 1185 1188 1189 1200 1219 1220 1232 1233 1236 1282 1290 1320 1322 23517 23548 24201 24219 24222 24226 24232 24241 24243 24249 24251 24280 24286 24290 24295 24298 24300 243078.650015785639275e-20 1.4134638842407062e-18https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/216/26?format=asciiUVOpticalInfrareddefaultJ/ApJS/216/26/table2T Tauri stars (TTSs) and candidates found in the Taurus molecular cloud (TMC) from the GALEX AISSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension in decimal degrees (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000) (1)degpos.eq.dec;meta.mainFUVmag[15.8/22.6] GALEX FUV band magnitudemagphot.mag;em.UVfloatNUVmag[13.8/21.7] GALEX NUV band magnitudemagphot.mag;em.UVfloatrmag[9.3/16.1] UCAC4 R2 band magnitude; Zacharias et al. 2013 (Cat. I/322)magphot.mag;em.opt.RfloatJmag[7.4/13.9] 2MASS J band magnitudemagphot.mag;em.IR.JfloatHmag[6.6/13.4] 2MASS H band magnitudemagphot.mag;em.IR.HfloatKsmag[6.2/13.1] 2MASS Ks band magnitudemagphot.mag;em.IR.KfloatIDSource identifier if anymeta.idcharTypeObject type (CTTS, WTTS or candidates)src.classcharGALEXCross-match within 3" with GALEX-DR5 (II/312)meta.ref.urlintnullableUCAC4Display the UCAC4 data (I/322) within 2.2"meta.ref.urlchar2MDisplay the 2MASS data within 3" (Cutri et al. 2003, Cat. II/246)meta.ref.urlchar