J/AJ/129/907ivo://CDS.VizieR/J/AJ/129/907doi:10.26093/cds/vizier.51290907CDSBriceno C.Calvet N.Hernandez J.Vivas A.K.Hartmann L.Downes J.J.,Berlind P.2017-06-13T11:08:31Z2010-05-27T06:04:19ZCDS support team

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

cds-question@unistra.frstellar-associationssurveyspre-main-sequence-starsWe present results of a large-scale, multi-epoch optical survey of the Orion OB1 association, carried out with the QUEST camera at the Venezuela National Astronomical Observatory (CIDA). We identify for the first time the widely spread low-mass, young population in the Ori OB1a and OB1b subassociations. Candidate members were picked up by their variability in the V band and position in color-magnitude diagrams. We obtained spectra to confirm membership. In a region spanning ~68{deg}^2^, we found 197 new young stars; of these, 56 are located in the Ori OB1a subassociation and 141 in Ori OB1b.2005AJ....129..907Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/129/907CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/36 : UBV and uvby-beta obs. of Orion OB1 Association (Warren+ 1977)J/A+A/289/101 : Orion OB1 association. I. (Brown+, 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/129/907https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/129/907http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/129/907https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/129/907https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/129/907http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/129/907GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/129/907/table3 (New Ori OB1 members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/129/907/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/129/907/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/129/907/table3?GETtext/xml+votable180.050000true77.7449167-0.13416670.0055555555555555565/5715 5718 5720 6/22837 22839 22847 22854 22855 22857 22858 22859 22866 22869 22870 22884 22885 22886 22888 22889 22890 22894 22895 22898 22899 22904 22905 22906 22933 22977 22979 229801.5062136169708525e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/129/907?format=asciiOpticaldefaultJ/AJ/129/907/table3New Ori OB1 membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_CVSOSimbad column added by the CDSmeta.ref.urlcharCVSO[1/197] The CVSO running numbermeta.id;meta.mainintprimaryf_CVSONote on CVSO (1)meta.codechar2MASSThe 2MASS identification numbermeta.id.crosscharRAJ2000Hour of the 2MASS Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of 2MASS Declination (J2000)pos.eq.dec;meta.mainVmag? V band magnitude (see "History" section below)magphot.mag;em.opt.VfloatnullableV-Ic? (V-I_c_) color indexmagphot.color;em.opt.V;em.opt.IfloatnullablesigV? 1{sigma} dispersion in the normalized instrumental V band magnitudesmagphot.mag;em.optfloatnullableDelV? Measured variations in the normalized instrumental V band magnitudesmagphot.mag;em.optfloatnullableSpTSpectral type (2)src.spTypecharW(Ha)? Equivalent width of H{alpha} in Angstroms0.1nmspect.line.eqWidth;em.line.HalphafloatnullableW(LiI)? Equivalent width of Li I (6707) in Angstroms0.1nmspect.line.eqWidth;em.opt.IfloatnullableCl[CW] Classical or Weak T Tau typesrc.classcharOB[1abc] OB subassociation (1a, 1b or 1c)meta.notecharJmag? 2MASS J band magnitudemagphot.mag;em.IR.Jfloatnullablef_Jmag[34] Reason of missing Jmag (4)meta.codecharJ-H? 2MASS (J-H) color indexmagphot.color;em.IR.J;em.IR.Hfloatnullablef_J-H[34] Reason of missing J-H (4)meta.codecharH-K? 2MASS (H-K) color indexmagphot.color;em.IR.H;em.IR.Kfloatnullablef_H-K[34] Reason of missing H-K (4)meta.codecharJ/AJ/129/907/table4Other designations of new membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCVSO[1/197] The CVSO numbermeta.id;meta.mainintONameOther names, separated by commasmeta.idcharJ/AJ/129/907/propPhysical properties of Ori OB1a and OB1b starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOriSimbad column added by the CDSmeta.id.parentcharCVSO[1/197] The CVSO running numbermeta.id;meta.mainintf_CVSO[1] Double solution (1)meta.codecharTeffStellar effective temperatureKphys.temperature.effectiveintAV? V band extinctionmagphys.absorption;em.opt.VfloatnullableLumStellar luminositysolLumphys.luminosityfloatRad? Stellar radiussolRadphys.size.radiusfloatnullableM(B)? Mass from Baraffe et al. 1998 (Cat. J/A+A/337/403)solMassphys.massfloatnullableage(B)? Age from Baraffe et al. (Cat. J/A+A/337/403)Myrtime.agefloatnullableM(S)? Mass from Siess et al. (2000A&A...358..593S)solMassphys.massfloatnullableage(S)? Age from Siess et al. (2000A&A...358..593S)Myrtime.agefloatnullableClClassical (CTTS) or Weak (WTTS) T Tauri classsrc.classchar