J/MNRAS/393/538ivo://CDS.VizieR/J/MNRAS/393/538doi:10.26093/cds/vizier.73930538CDSJeffries R.D.Naylor T.Walter F.M.Pozzo M.P.Devey C.R.2024-07-08T20:15:23Z2009-12-19T15:12:29ZCDS support team

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

cds-question@unistra.frstellar-associationspre-main-sequence-starsx-ray-sourcesWe present the results of a photometric BVI survey of 0.9deg^2^ around the Wolf-Rayet binary gamma^2^ Vel and its early-type common proper motion companion gamma^1^ Vel (together referred to as the gamma Vel system). Several hundred pre-main-sequence (PMS) stars are identified and the youth of a subset of these is spectroscopically confirmed by the presence of lithium in their atmospheres, Halpha emission and high levels of X-ray activity. We show that the PMS stars are kinematically coherent and spatially concentrated around gamma Vel. The PMS stars have similar proper motions to gamma Vel, to main-sequence (MS) stars around gamma Vel and to early-type stars of the wider Vela OB2 association of which gamma^2^ Vel is the brightest member.2009MNRAS.393..538Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/393/538CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/40 : XMM-Newton 2nd Incremental Source Catalogue (2XMMi) (XMM-SSC, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/393/538https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/393/538http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/393/538https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/393/538https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/393/538http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/393/538GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/393/538/table2 (The photometric catalogue for a 0.9deg^2^ area around gamma Vel)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/393/538/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/393/538/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/393/538/table2?GETtext/xml+votable180.050000true121.661425-47.621655560.005555555555555556Cone search capability for table J/MNRAS/393/538/table3 (Spectroscopy results)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/393/538/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/393/538/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/393/538/table3?GETtext/xml+votable180.050000true121.9811-47.129440.005555555555555556Cone search capability for table J/MNRAS/393/538/Xsources (Correlated X-ray sources from the 2XMM catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/393/538/Xsources?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/393/538/Xsources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/393/538/Xsources?GETtext/xml+votable180.050000true122.06241-47.260550.0055555555555555566/39194 39205 39216-39218https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/393/538?format=asciiX-raydefaultJ/MNRAS/393/538/table2The photometric catalogue for a 0.9deg^2^ area around gamma VelrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_[JNW2009]Simbad column added by the CDSmeta.ref.urlchar[JNW2009]Identification number FF-NNNNmeta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)pos.eq.dec;meta.mainindexedYposY positionpixpos.cartesian.y;instr.detdoubleVmagJohnson V magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.error;phot.mag;em.opt.Vfloatq_VmagV band quality flag (G1)meta.code.qualcharB-VJohnson B-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.error;phot.color;em.opt.Bfloatq_B-VB-V band quality flag (G1)meta.code.qual;phot.color;em.opt.BcharV-IcJohnson-Cousins V-Ic colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-Icrms uncertainty on V-Icmagstat.error;phot.color;em.opt.Vfloatq_V-IcV-Ic band quality flag (G1)meta.code.qual;phot.color;em.opt.VcharXposX positionpixpos.cartesian.x;instr.detdoubleJ/MNRAS/393/538/table3Spectroscopy resultsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNight[1/2] Night the spectra were obtained (1)meta.id;obsint[JNW2009]Identification number FF-NNNNmeta.id;meta.maincharVmagJohnson V magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.error;phot.mag;em.opt.Vfloatq_VmagJohnson V band quality flag (G1)meta.code.qualcharB-VJohnson B-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.error;phot.color;em.opt.Bfloatq_B-VB-V band quality flag (G1)meta.code.qual;phot.color;em.opt.BcharV-IcJohnson-Cousins V-Ic colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-Icrms uncertainty on V-Icmagstat.error;phot.color;em.opt.Vfloatq_V-IcV-Ic band quality flag (G1)meta.code.qual;phot.color;em.opt.VcharS/NSignal-to-noise ratio per pixel for the spectrum estimated from the continuum around the LiI linestat.snr;instr.pixelintEW(Ha)Halpha equivalent width (2)0.1nmspect.line.eqWidth;em.line.Halphafloate_EW(Ha)rms uncertainty on EW(Ha)0.1nmstat.errorfloatEW(Li)Lithium (LiI 6708{AA}) equivalent width0.1nmspect.line.eqWidthfloate_EW(Li)rms uncertainty on EW(Li) (3)0.1nmstat.errorfloatHRV? Heliocentric radial velocity measured from the spectrumkm/sspect.dopplerVeloc;pos.heliocentricintnullablepmRA? NOMAD proper motion along RAmas/yrpos.pm;pos.eq.rafloatnullablee_pmRA? rms uncertainty on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDE? NOMAD proper motion along DEmas/yrpos.pm;pos.eq.decfloatnullablee_pmDE? rms uncertainty on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatnullableComComments on the cross-correlation function (ccf) used to derive the RV (4)stat.correlationcharlogLX? X-ray luminositylog(solLum)phys.luminosity;em.X-rayfloatnullableMm[1/3] Membership flag (5)meta.code.errorintRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainJ/MNRAS/393/538/XsourcesCorrelated X-ray sources from the 2XMM cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_2XMMpSimbad column added by the CDSmeta.notechar2XMMp2XMMp designation (JHHMMSS.s+DDMMSS)meta.id;meta.maincharObs[1/2] Observation number (1)meta.idintMLSource detection likelihoodstat.likelihood;instr.saturationdoublepnCount rate in the 0.5-4.5keV range for the pn instrument (2)ct/sphot.count;em.X-raydoublee_pnrms uncertainty on pnct/sstat.errordoublem1Count rate in the 0.5-4.5keV range for the m1 instrument (2)ct/sphot.count;em.X-raydoublee_m1rms uncertainty on m1ct/sstat.errordoublem2Count rate in the 0.5-4.5keV range for the m2 instrument (2)ct/sphot.count;em.X-raydoublee_m2rms uncertainty on m2ct/sstat.errordoubleSepSeparation between X-ray source and optical counterpartarcsecpos;arith.difffloat[JNW2009]Identification number FF-NNNNmeta.id.crosscharVmagJohnson V magnitude of optical counterpartmagphot.mag;em.opt.VfloatV-IcJohnson-Cousins V-Ic colour index of optical counterpartmagphot.color;em.opt.V;em.opt.IfloatFluxAverage unabsorbed X-ray flux (0.5-4.5keV)mW.m**-2phot.flux;em.X-raydoubleBCAssumed V-band bolometric correctionmagphot.mag.bcfloatlog(LX/LBol)Derived X-ray to bolometric flux ratiophot.flux;arith.ratiofloatRAJ2000Optical source right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Optical source declination in decimal degrees (J2000)degpos.eq.dec;meta.main