J/A+A/506/711ivo://CDS.VizieR/J/A+A/506/711doi:10.26093/cds/vizier.35060711CDSGregorio-Hetem J.Montmerle T.Rodrigues C.V.Marciotto E.,Preibisch T.Zinnecker H.2010-03-10T16:26:36Z2010-03-10T17:18:14ZCDS support team

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

cds-question@unistra.frstellar-associationsx-ray-sourcespre-main-sequence-starsinfrared-photometryThe CMa R1 star-forming region contains several compact clusters as well as many young early-B stars. It is associated with a well-known bright rimmed nebula, the nature of which is unclear (fossil HII region or supernova remnant). To help elucidate the nature of the nebula, our goal was to reconstruct the star-formation history of the CMa R1 region, including the previously unknown older, fainter low-mass stellar population, using X-rays. We analyzed images obtained with the ROSAT satellite, covering ~5deg^2^. Complementary VRI photometry was performed with the Gemini South telescope. Colour-magnitude and colour-colour diagrams were used in conjunction with pre-main sequence evolutionary tracks to derive the masses and ages of the X-ray sources.2009A&A...506..711Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/506/711CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/30 : Second ROSAT PSPC Catalog (ROSAT, 2000)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/506/711https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/506/711http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/506/711https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/506/711https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/506/711http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/506/711GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/506/711/tablea2 (List of ROSAT sources observed by XMM-Newton or Chandra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/506/711/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/506/711/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/506/711/tablea2?GETtext/xml+votable180.050000true105.8894167-11.57408330.005555555555555556Cone search capability for table J/A+A/506/711/tablea1 (X-ray sources detected in CMa R1 by ROSAT)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/506/711/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/506/711/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/506/711/tablea1?GETtext/xml+votable180.050000true104.469167-11.4563890.0055555555555555566/21641-21644 21646 21664-216658.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/506/711?format=asciiX-rayInfrareddefaultJ/A+A/506/711/tablea2List of ROSAT sources observed by XMM-Newton or ChandrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCMaX[1/98] Source namemeta.id;meta.mainint2MASS2MASS namemeta.idcharNumSource number (CNN or XNN) (1)meta.idcharRAJ2000Right ascension (J2000) (2)pos.eq.ra;meta.mainDEJ2000Declination (J2000) (2)pos.eq.dec;meta.mainJ/A+A/506/711/tablea1X-ray sources detected in CMa R1 by ROSATrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCMaX[1/98] Source name (1)meta.id;meta.mainintprimaryn_CMaX[*] *: Relevant sources: H-K excessmeta.notecharX[x] x: Objects detected by XMM-Newton and/or Chandrameta.notecharNoteIndividual notes on CMaX (2)meta.notecharErrDiameter of the position error circlearcsecstat.error;phys.angSizeintCRateX-ray count ratect/ksphot.count;em.X-rayfloate_CRaterms uncertainty on CRatect/ksstat.errorfloatS/NX-ray signal-to-noise ratiostat.snrfloatlogLXX-ray luminositylog(1e-07W)phys.luminosity;em.X-rayfloatRAJ2000Optical counterpart Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Optical counterpart Declination (J2000)pos.eq.dec;meta.mainuc[)] Uncertainty flag on optical positionmeta.code.errorcharRmag? R magnitudemagphot.mag;em.opt.RfloatnullableAV? Extinction in V bandmagphys.absorption;em.opt.VfloatnullableJmag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS K magnitudemagphot.mag;em.IR.Kfloatnullablel_AgeLimit flag on Agemeta.code.error;time.agecharAge? Age estimation based on near-IR dataMyrtime.ageintnullableAge2? Second value of Age when intervalMyrtime.ageintnullableu_Age[?] Uncertainty flag on Agemeta.code.error;time.agecharl_MassLimit flag on Massmeta.code.error;phys.masscharMass? Mass estimation based on near-IR datasolMassphys.massfloatnullableMass2? Second value of Mass when intervalsolMassphys.massfloatnullableu_Mass[?] Uncertainty flag on Massmeta.code.error;phys.masschar