J/ApJS/163/306ivo://CDS.VizieR/J/ApJS/163/306doi:10.26093/cds/vizier.21630306CDSGetman K.V.Feigelson E.D.Townsley L.Broos P.Garmire G.,Tsujimoto M.2017-07-05T07:00:16Z2008-01-22T10:50:40ZCDS support team

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

cds-question@unistra.frx-ray-sourcesinterstellar-mediummolecular-cloudspre-main-sequence-starsThe Cepheus B (Cep B) molecular cloud and a portion of the nearby Cep OB3b OB association, one of the most active regions of star formation within 1kpc, have been observed with the ACIS detector on board the Chandra X-Ray Observatory. We detect 431 X-ray sources, of which 89% are confidently identified as clustered premain-sequence (PMS) stars.2006ApJS..163..306Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/163/306CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/MNRAS/341/805 : UBVI CCD photometry of Cep OB3b (Pozzo+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/163/306https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/163/306http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/163/306https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/163/306https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/163/306http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/163/306GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/163/306/data (Source properties, 2MASS counterparts, X-ray spectroscopy and luminosity)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/163/306/data?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/163/306/data?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/163/306/data?GETtext/xml+votable180.050000true343.88023562.7477080.0055555555555555566/156838.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/163/306?format=asciiX-raydefaultJ/ApJS/163/306/dataSource properties, 2MASS counterparts, X-ray spectroscopy and luminosityrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[GFT2006]CepB source numbermeta.id;meta.mainintCXOCepBThe IAU designation (HHMMSS.ss+DDMMSS.s)meta.idcharRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainOAxisThe off-axis anglearcmininstr.offsetfloatNetFNet total band (0.5-8.0keV) counts (1)ctphot.count;em.X-rayfloate_NetFError in NetFctstat.errorfloatBkgFBackground total band (0.5-8.0keV) counts extractedctphot.count;em.X-rayfloatNetHNet hard band (2.0-8.0keV) counts (1)ctphot.count;em.X-rayfloatPSFPoint spread fraction in extracted area at fiducial energy 1.5keVinstr.det.psf;arith.ratiofloatSigSource significance (in sigma)stat.fit.goodnessfloatAnomSource anomalies (2)meta.codecharVarSource variability from K-S test (3)meta.code;src.varcharExpEffective exposure timekstime.duration;obs.exposurefloatMedEMedian energy in total band corrected for backgroundkeVem.energyfloatf_2MASS2MASS contamination and confusion flag (2)meta.codechar2MASSThe 2MASS source identificationmeta.id.crosscharq_2MASS2MASS photometric quality flag (1)meta.code.qualcharOffset? Chandra-2MASS source positional offsetarcsecpos;arith.difffloatnullableJmag? 2MASS J band brightnessmagphot.mag;em.IR.JfloatnullableHmag? 2MASS H band brightnessmagphot.mag;em.IR.HfloatnullableKsmag? 2MASS K_s_ band brightnessmagphot.mag;em.IR.KfloatnullableAv? Visual absorption (3)magphys.absorption;em.opt.VfloatnullableMass? Stellar mass (3)solMassphys.massfloatnullableLbol? Stellar bolometric luminosity (3)log(solLum)phys.luminosityfloatnullablelog(NH)Log of the Hydrogen column densitylog(cm**-2)phys.columnDensityfloatkTPlasma energykeVphys.temperaturefloatLhLog of observed hard band (2.0-8.0keV) luminosity (1)log(1e-07W)phys.luminosity;em.X-rayfloate_LhError in Lh from simulations (1)log(1e-07W)stat.errorfloatLhcLog of estimated hard band luminosity corrected for absorption (1)log(1e-07W)phys.luminosity;em.X-rayfloate_LhcError in Lhc from simulations (1)log(1e-07W)stat.errorfloatLtLog of observed total band (0.5-8.0keV) luminosity (1)log(1e-07W)phys.luminosity;em.X-rayfloate_LtError in Lt from simulations (1)log(1e-07W)stat.errorfloatLtcLog of estimated total band luminosity corrected for absorption (1)log(1e-07W)phys.luminosity;em.X-rayfloate_LtcError in Ltc from simulations (1)log(1e-07W)stat.errorfloatMMDFlSource flag (2)meta.codechar