J/AJ/142/140ivo://CDS.VizieR/J/AJ/142/140doi:10.26093/cds/vizier.51420140CDSErickson K.L.Wilking B.A.Meyer M.R.Robinson J.G.Stephenson L.N.2017-12-15T10:54:50Z2013-05-06T14:00:15ZCDS support team

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

cds-question@unistra.fropen-star-clusterspre-main-sequence-starsline-intensitiesmorgan-keenan-classificationWe have completed an optical spectroscopic survey of an unbiased, extinction-limited sample of candidate young stars covering 1.3deg^2^ of the {rho} Ophiuchi star-forming region. While infrared, X-ray, and optical surveys of the cloud have identified many young stellar objects (YSOs), these surveys are biased toward particular stages of stellar evolution and are not optimal for studies of the disk frequency and initial mass function. We have obtained over 300 optical spectra to help identify 135 association members based on the presence of H{alpha} in emission, lithium absorption, X-ray emission, a mid-infrared excess, a common proper motion, reflection nebulosity, and/or extinction considerations.2011AJ....142..140Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/142/140CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/438/813 : Stellar population in {rho} Oph cloud core (Strom+, 1995)J/ApJS/112/109 : Rho Oph Near-IR Positions and Photometry (Barsony+, 1997)J/A+A/359/113 : X-ray and IR study of Rho Oph dark cloud (Grosso+, 2000)J/ApJ/613/393 : X-ray and radio sources in {rho} Oph Core A (Gagne+, 2004)J/A+A/429/963 : XMM-Newton observation of the rho Oph cloud (Ozawa+, 2005)J/ApJ/630/381 : Mid-IR imaging in {rho} Oph (Barsony+, 2005)J/A+A/447/609 : 1.2mm continuum observations in rho Oph cloud (Stanke+, 2006)J/A+A/452/245 : Near-IR photometry of PMS stars in rho Oph (Natta+, 2006)J/ApJ/671/1800 : SCUBA observations of {rho} Oph cloud (Andrews+, 2007)J/A+A/485/155 : HK photometry of rho Oph PMS stars (Alves de Oliveira+, 2008)J/A+A/510/A98 : ^12^C^18^O(3-2) map of rho Oph A (Liseau+, 2010)J/A+A/515/A75 : {rho} Oph cloud low-mass population (Alves de Oliveira+, 2010)J/A+A/519/A34 : YSOs in DROXO (Deep rho Oph XMM obs.) (Pillitteri+, 2010)J/ApJ/719/550 : Deep NIR imaging of {rho} Oph cloud core (Marsh+, 2010)J/ApJ/751/22 : Candidates of the {rho} Oph cluster (Barsony+, 2012)J/AJ/130/1733 : Optical spectroscopy of {rho} Oph stars (Wilking+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/142/140https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/142/140http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/142/140https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/142/140https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/142/140http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/142/140GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/142/140/table2 (Optical properties of candidate young stellar objects)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/142/140/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/142/140/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/142/140/table2?GETtext/xml+votable180.050000true246.16375-24.1194440.0055555555555555566/42980 42981 42983 429922.367228618189496e-19 2.6706780932288093e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/142/140?format=asciiOpticaldefaultJ/AJ/142/140/table2Optical properties of candidate young stellar objectsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDHYDRA field and aperture number of observation (N-NN), DIFFERS from PAPER I (Wilking et al. 2005, Cat. J/AJ/130/1733)meta.id;obs.fieldcharprimaryASimbad column added by the CDSmeta.ref.urlcharNameSources names from optical or infrared studies (1)meta.idcharXNameX-ray source association (2)meta.idcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainLi?[Yes: ] Li detection? (Yes or Yes:)meta.codecharl_EWHaLimit flag on EWHameta.code.errorcharEWHa? H{alpha} equivalent width0.1nmspect.line.eqWidth;em.line.Halphafloatnullablen_EWHauncertain value (:) or emission (+em)meta.notecharIcmag? Cousins I magnitude (3)magphot.mag;em.opt.IfloatnullableRc-Ic? Cousins R-I colour index (3)magphot.color;em.opt.R;em.opt.IfloatnullableSpType1Previous spectral type with references (4)meta.ref;src.spTypecharSpType2Spectral typesrc.spTypecharSpTypeAdopted spectral typesrc.spTypecharNotes"Giant" or "Poss. dwarf" starmeta.notecharSimbadSimbad column added by the CDSmeta.refcharJ/AJ/142/140/table3Association members with optical spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDHYDRA field and aperture number of observation (N-NN), NOT AS IN PAPER Imeta.id;obs.fieldcharNameSources names from optical or infrared studies (1)meta.idcharSourceName from Wilking et al. (2005, J/AJ/130/1733), N-NNmeta.idcharSpTypeOptical spectral types from this study or Wilking et al. (2005, J/AJ/130/1733) except notedsrc.spTypecharr_SpTypeReference for spectral type (2)src.spTypecharAVAbsorption in V bandmagphys.absorptionfloatr_AVReference for AV (3)meta.ref;pos.framecharIMAGAbsolute I-band magnitudemagphot.mag;em.opt.IfloatlogTeEffective temperaturelog(K)phys.temperature.effectivefloatlogLLuminositylog(solLum)phys.luminosityfloatMass? Stellar mass (4)solMassphys.massfloatnullablel_logAgeLimit flag on logAgemeta.code.error;time.agecharlogAge? Agelog(yr)time.agefloatnullablen_logAgeNote on logAgemeta.notecharCritCriteria for young stellar association (5)meta.notecharNotes? Pecularities of the source (6)meta.notechar