J/ApJ/618/123ivo://CDS.VizieR/J/ApJ/618/123doi:10.26093/cds/vizier.16180123CDSSilverman J.D.Green P.J.Barkhouse W.A.Kim D.-W.Aldcroft T.L.,Cameron R.A.Wilkes B.J.Mossman A.Ghosh H.Tananbaum H.Smith M.G.,Smith R.C.Smith P.S.Foltz C.Wik D.Jannuzi B.T.2021-03-29T12:26:38Z2020-08-20T14:58:29ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleix-ray-sourcesquasarsWe present X-ray and optical analysis of 188 active galactic nuclei (AGN) identified from 497 hard X-ray (f_2.0-8.0keV_>2.7x10-15ergs/cm^2^/s) sources in 20 Chandra fields (1.5{deg}^2^) forming part of the Chandra Multiwavelength Project (ChaMP). These medium depth X-ray observations enable us to detect a representative subset of those sources responsible for the bulk of the 28keV cosmic X-ray background. Brighter than our optical spectroscopic limit, we achieve a reasonable degree of completeness (77% of X-ray sources with counterparts r'<22.5 have been classified): broad emission-line AGNs (62%), narrow emission-line galaxies (24%), absorption line galaxies (7%), stars (5%), or clusters (2%).2005ApJ...618..123Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/618/123CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/150/19 : ChaMP. I. First X-ray source catalog (Kim+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/618/123https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/618/123http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/618/123https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/618/123https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/618/123http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/618/123GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/618/123/table4 (Hard X-ray emitting AGN)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/618/123/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/618/123/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/618/123/table4?GETtext/xml+votable180.050000true4.690583316.56294440.0055555555555555566/4285 6252 7510 8123 8126 10692 10694 11101 11632 16301 17472 18780 18782 19216 19218 19282 19283 19848 19849 22915 23076 23078 27009 34139 34533 34535 48423 491252.85864675833786e-19 3.5010283109654867e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/618/123?format=asciiX-raydefaultJ/ApJ/618/123/table4Hard X-ray emitting AGNzRedshiftsrc.redshiftfloatf_Seq[e] Flag on Seq (1)meta.codecharCXOMPThe ChaMP namemeta.id;meta.maincharHRHardness ratio (2)phot.flux;arith.ratiofloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSource numbermeta.idintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainHardCounts in the 2-8keV bandctphot.count;em.X-ray.mediumfloate_HardUncertainty in Hardctstat.errorfloatlogfXLog of the galactic absorption-corrected 2-8keV flux in units of erg/cm^2^/slog(mW.m**-2)phot.flux;em.X-ray.mediumfloatl_HRLimit flag on HRmeta.code.errorcharlogLXLog of the rest frame 2-8keV luminosity in units of erg/slog(1e-07W)phys.luminosity;em.X-rayfloatr'magSDSS r' filter magnitudemagphot.mag;em.opt.Rfloatl_g'-i'Limit flag on g'-i'meta.code.errorcharg'-i'SDSS (g'-r') colormagphot.colorfloatl_r'-i'Limit flag on r'-i'meta.code.errorcharr'-i'SDSS (r'-i') colormagphot.color;em.opt.R;em.opt.IfloatClassClassification (3)meta.code.classcharl_logNHLimit flag on logNHmeta.code.errorcharlogNH? Log of the hydrogen column densitylog(cm**-2)phys.columnDensityfloatnullableE_logNH? Upper limit on logNHlog(cm**-2)stat.error;stat.maxfloatnullablee_logNH? Lower limit on logNHlog(cm**-2)stat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar