J/ApJ/665/719ivo://CDS.VizieR/J/ApJ/665/719doi:10.26093/cds/vizier.16650719CDSTsujimoto M.Feigelson E.D.Townsley L.K.Broos P.S.Getman K.V.,Wang J.Garmire G.P.Baba D.Nagayama T.Tamura M.Churchwell E.B.2017-11-28T13:21:15Z2010-01-19T09:31:22ZCDS support team

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

cds-question@unistra.frh-ii-regionsopen-star-clustersx-ray-sourcesinfrared-photometryWe present the results of a high-resolution X-ray imaging study of the stellar population in the Galactic massive star-forming region RCW 49 and its central OB association Westerlund 2. We obtained a ~40ks X-ray image of a ~17'x17' field using the Chandra X-Ray Observatory and deep NIR images using the Infrared Survey Facility in a concentric ~8.3'x8.3' region. We detected 468 X-ray sources and identified optical, NIR, and Spitzer MIR counterparts for 379 of them.2007ApJ...665..719Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/665/719CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/297 : NOMAD Catalog (Zacharias+ 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/665/719https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/665/719http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/665/719https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/665/719https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/665/719http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/665/719GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/665/719/table1 (Chandra catalog: basic source properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/665/719/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/665/719/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/665/719/table1?GETtext/xml+votable180.050000true155.73789-57.734180.0055555555555555566/37343 38026https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/665/719?format=asciiX-rayInfrareddefaultJ/ApJ/665/719/table1Chandra catalog: basic source propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSSimbad column added by the CDSmeta.ref.urlchar[TFT2007]Source sequence number (1)meta.id;meta.mainintprimaryAnom[geps] Source anomalies (5)meta.codecharCXOUJSource IAU name (HHMMSS.ss+DDMMSS.s)meta.idcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainePosPosition error (2)arcsecstat.error;posfloatthetaOff-axis anglearcmininstr.offsetfloatCNetEstimated (0.5-8keV) net countsctphot.count;em.X-rayfloate_CNetAveraged upper and lower 1{sigma} error in CNetctstat.errorfloatBackBackground (0.5-8keV) counts (3)ctinstr.backgroundfloatCHrdEstimated hard (2-8keV) net countsctphot.count;em.X-rayfloatPSFPSF fraction enclosed within extraction region (4)instr.det.psf;obs.field;arith.ratiofloatSignPhotometric significancestat.fit.goodness;photfloatl_logPLimit flag on logPmeta.code.errorcharlogPLog probability extracted (0.5-8keV) counts are solely from backgroundstat.probabilityfloatVar[abc] (0.5-8keV) variability characterization from K-S statistic (6)meta.code;src.varcharEexpEffective exposure time (7)kstime.duration;obs.exposurefloatEmedBackground-corrected (0.5-8keV) median photon energykeVem.energyfloatFXPhotometric (0.5-8keV) flux estimate (8)mW.m**-2phot.flux;em.X-raydoubleJ/ApJ/665/719/table2X-ray spectroscopic fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[TFT2007]Source sequence number (1)meta.id;meta.mainintCXOUJSource IAU name (HHMMSS.ss+DDMMSS.s)meta.idcharCNetEstimated (0.5-8keV) net countsctphot.count;em.X-rayfloatSignPhotometric significancestat.fit.goodness;photfloate_logNH? Lower 90% confidence interval in logNH (2)log(cm**-2)stat.errorfloatnullablelogNH? Log of column density from spectral fit (3)log(cm**-2)phys.columnDensityfloatnullableE_logNH? Upper 90% confidence interval in logNH (2)log(cm**-2)stat.error;stat.maxfloatnullablee_kT? Lower 90% confidence interval in kT (2)keVstat.error;phys.energyfloatnullablekT? Plasma temperature from spectral fit (3)keVphys.temperaturefloatnullableE_kT? Upper 90% confidence interval in kT (2)keVstat.error;stat.maxfloatnullablee_logEM? Lower 90% confidence interval in logEM (2)log(cm**-3)stat.errorfloatnullablelogEM? Log of emission measure from spectral fit (3)log(cm**-3)phys.emissMeasurefloatnullableE_logEM? Upper 90% confidence interval in logEM (2)log(cm**-3)stat.error;stat.maxfloatnullablelogLs? Log of soft (0.5-2keV) luminosity (4)log(1e-07W)phys.luminosity;em.X-rayfloatnullablelogLh? Log of hard (2-8keV) luminosity (4)log(1e-07W)phys.luminosity;em.X-rayfloatnullablelogLhc? Log of absorption-corrected (2-8keV) luminosity (4)log(1e-07W)phys.luminosity;em.X-rayfloatnullablelogLt? Log of (0.5-8keV) luminosity (4)log(1e-07W)phys.luminosity;em.X-rayfloatnullablelogLtc? Log of absorption-corrected (0.5-8keV) luminosity (4)log(1e-07W)phys.luminosity;em.X-rayfloatnullableJ/ApJ/665/719/table3Optical, NIR and MIR counterparts of ACIS sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[TFT2007]Source sequence number (1)meta.id;meta.mainintNIR[TS] The Near-IR photometry flag (2)meta.code.error;photcharRmag? R-band magnitudemagphot.mag;em.opt.RfloatnullableJmag? J-band magnitudemagphot.mag;em.IR.JfloatnullableHmag? H-band magnitudemagphot.mag;em.IR.HfloatnullableKmag? Ks-band magnitudemagphot.mag;em.IR.Kfloatnullable3.6mag? IRAC 3.6 micron band magnitudemagphot.mag;em.IR.3-4umfloatnullable4.5mag? IRAC 4.5 micron band magnitudemagphot.mag;em.IR.4-8umfloatnullable5.8mag? IRAC 5.8 micron band magnitudemagphot.flux.density;em.IR.4-8umfloatnullable8.0mag? IRAC 8.0 micron band magnitudemagphot.mag;em.IR.8-15umfloatnullableFlagsFlags (3)meta.code.errorcharOIDLiterature identifications (4)meta.idcharNOMADThe NOMAD identification (Cat. I/297)meta.id.crosschar2MASSThe 2MASS identification (Cat. II/246)meta.id.crosscharIRACThe IRAC identificationmeta.id.crosschar