J/ApJ/661/1119ivo://CDS.VizieR/J/ApJ/661/1119doi:10.26093/cds/vizier.16611119CDSBriceno C.Hartmann L.Hernandez J.Calvet N.Vivas A.K.Furesz G.,Szentgyorgyi A.2009-05-17T22:20:55Z2009-05-17T22:14:32ZCDS support team

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

cds-question@unistra.fropen-star-clusterspre-main-sequence-starsradial-velocityline-intensitiesWe report here on the photometric and kinematic properties of a well-defined group of nearly 200 low-mass pre-main-sequence stars, concentrated within ~1{deg} of the early-B star 25 Ori, in the Orion OB1a subassociation. We refer to this stellar aggregate as the 25 Orionis group. The group also harbors the Herbig Ae/Be star V346 Ori and a dozen other early-type stars with photometry, parallaxes, and some with IR excess emission, indicative of group membership.2007ApJ...661.1119Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/661/1119CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/131/2959 : Candidate low-mass PMS in 25 Orionis group (McGehee+, 2006)J/AJ/129/907 : New Ori OB1 members (Briceno+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/661/1119https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/661/1119http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/661/1119https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/661/1119https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/661/1119http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/661/1119GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/661/1119/table2 (Low-mass pre-main sequence members in our 25 Orionis and Ori OB1b Hectochelle fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/661/1119/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/661/1119/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/661/1119/table2?GETtext/xml+votable180.050000true80.8788751.76369440.0055555555555555566/22857 22859 22862 22894 22895https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/661/1119?format=asciiOpticaldefaultJ/ApJ/661/1119/table2Low-mass pre-main sequence members in our 25 Orionis and Ori OB1b Hectochelle fieldsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCVSOCIDA Variability Survey of Orion running number (1)meta.id;meta.mainintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainVmagThe V band magnitudemagphot.mag;em.opt.VfloatV-IcThe Johnson-Cousins V-Ic color indexmagphot.color;em.opt.V;em.opt.IfloatSpTSpectral type; errors are 1 subclass (2)src.spTypecharEWHalLow-resolution equivalent width of H{alpha} (2)0.1nmspect.line.eqWidth;em.line.HalphafloatEWLi? Equivalent width of LiI line (6707{AA}) (2)0.1nmspect.line.eqWidthfloatnullableEWHahHigh-resolution equivalent width of H{alpha} (3)0.1nmspect.line.eqWidth;em.line.HalphafloatRVRadial velocity (3)km/sspect.dopplerVeloc;pos.heliocentricfloate_RVThe 1{sigma} error in RV (3)km/sstat.errorfloatRThe cross-correlation process R value (4)stat.correlationfloatType[CW] Classical or Weak T Tau star (5)src.classcharLocObject location (25Ori or OB1b)meta.id.parentchar