J/MNRAS/352/91ivo://CDS.VizieR/J/MNRAS/352/91doi:10.26093/cds/vizier.73520091CDSGeorgantopoulos I.Georgakakis A.Akylas A.Stewart G.C.Giannakis O.,Shanks T.Kitsionas S.2024-06-29T20:15:15Z2006-06-02T09:29:40ZCDS support team

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

cds-question@unistra.frradio-sourcesquasarsactive-galactic-nucleiWe present an analysis of the X-ray spectral properties of 61 hard X-ray (2-8keV) selected sources from the bright XMM-Newton/2dF (f(2-8keV)>10^-14^erg/cm^2^/s) survey. This comprises nine XMMNewton pointings in the North Galactic Pole region (~1.6deg^2^) and overlaps with the SDSS, 2QZ and 2dFGRS surveys. Our sources contribute about 50 per cent of the 2-10keV X-ray background down to the flux limit of 10^-14^erg/cm^2^/s. The hardness ratio distribution of the sample suggests a deficit of heavily absorbed sources. Spectroscopic identifications exist for 34 sources.2004MNRAS.352...91Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/352/91CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2002)IX/37 : XMM-Newton Serendipitous Source Catalogue (1XMM) (XMM-SSC, 2003)VII/226 : The 2dF Galaxy Redshift Survey 100k Data Release (2dFGRS, 2001)J/MNRAS/349/135 : XMM-Newton/2dF survey. II. (Georgakakis+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/352/91https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/352/91http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/352/91https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/352/91https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/352/91http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/352/91GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/352/91/table2 (Optical and X-ray properties of the sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/352/91/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/352/91/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/352/91/table2?GETtext/xml+votable180.050000true206.3125-0.0133330.0055555555555555566/26019-26020 26022-26023 26028https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/352/91?format=asciiRadiodefaultJ/MNRAS/352/91/table2Optical and X-ray properties of the sampleOClassOptical classsrc.class.starGalaxycharSeqSequential numbermeta.recordintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000X-ray right ascension (J2000)pos.eq.ra;meta.mainDEJ2000X-ray declination (J2000)pos.eq.dec;meta.mainCRCounte rate at 2-8keVct/sphot.count;em.X-rayfloatn_CR[d] if count rate and flux from MOS; otherwise from PN instrument.meta.notechare_CRrms uncertainty on CRct/sstat.errorfloatFluxFlux at 2-8keV (10^-14^erg/cm^2^/s)1e-17W.m**-2phot.flux;em.X-rayfloate_Fluxrms uncertainty on Flux1e-17W.m**-2stat.error;phot.fluxfloatExpTime? Total exposure time in 2-8keV band from merged PN + MOS imagestime.duration;obs.exposureintnullablel_PmembLimit flag on Pmembmeta.code.errorcharPmemb? Probability that a given candidate is chance coincidence%stat.valuefloatnullabledr? Separation of the optical counterpart from the X-ray centroidarcsecmeta.id.assoc;pos.angDistancefloatnullablegmag? g magnitude of the optical counterpartmagphot.mag;em.opt.Rfloatnullablez? Redshiftsrc.redshiftfloatnullableu_z[?] Uncertainty flag on zmeta.code.error;src.redshiftcharClassClassification (2)meta.notecharNote[fge] Note (1)meta.notechar