J/AJ/130/387ivo://CDS.VizieR/J/AJ/130/387doi:10.26093/cds/vizier.51300387CDSStrateva I.V.Brandt W.N.Schneider D.P.Vanden Berk D.E.Vignali C.2006-04-21T23:33:25Z2006-04-21T23:31:53ZCDS support team

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

cds-question@unistra.fractive-galactic-nucleiultraviolet-astronomyx-ray-sourcesUsing a sample of 228 optically selected active galactic nuclei (AGNs) in the 0.01-6.3 redshift range with a high fraction of X-ray detections (81%-86%), we study the relation between rest-frame UV and soft X-ray emission and its evolution with cosmic time. The majority of the AGNs in our sample (155 objects) have been selected from the Sloan Digital Sky Survey (SDSS) in an unbiased way, rendering the sample results representative of all SDSS AGNs.2005AJ....130..387Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/130/387CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://www.sdss.org : SDSS home pageJ/AJ/126/2209 : X-ray AGN from RASS and SDSS (Anderson+, 2003)J/AJ/124/3465 : AGN in KISS-RASS sample (Stevenson+, 2002)IX/30 : Second ROSAT PSPC Catalog (ROSAT, 2000)B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/130/387https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/130/387http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/130/387https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/130/387https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/130/387http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/130/387GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/130/387/table1 (SDSS-ROSAT AGN data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/130/387/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/130/387/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/130/387/table1?GETtext/xml+votable180.050000true21.5092083-0.32336110.0055555555555555566/5102 5103 5804 5806 5860 6030 6038 6050 6052 6056 6057 6069 6107 6121 6139 6340 6532 6604 6605 7178 7273 7280 7281 7448 7552 9481 9512 9642 10217 11371 11375 11457 11587 11596 11793 11807 17300 17492 17749 17751 17767 17778 18005 18525 19052 19053 19983 25585 25846 25852 26022 26175 26189 26268 26269 26292 26302 26313 26316 27048 27049 27652 27654 27668 27714 36779 367802.381800341673347e-19 2.821731604724377e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/130/387?format=asciiX-rayUVdefaultJ/AJ/130/387/table1SDSS-ROSAT AGN datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSThe SDSS identification (JHHMMSS.ss+DDMMSS.s)meta.id.crosscharf_SDSS[12] ROSAT PSPC pointing or not (1)meta.codecharzSpectroscopic redshiftsrc.redshiftfloatObsIDID of the X-ray observationmeta.id;meta.maincharTexpEffective exposure timekstime.duration;obs.exposurefloatdeltaOff-axis angle (2)arcmininstr.offsetintCtsTotal source counts corrected for background emissionctphot.count;em.X-rayfloatlogF250nmLog of the 250nm flux density (3)log(Jy)phot.flux;em.UVfloatlogFXLog of the 0.5-2keV flux in units of erg/cm^2^/s (3)log(mW.m**-2)phot.flux;em.X-rayfloatlog2keVLog of the 2keV flux densitylog(Jy)phot.flux;em.X-rayfloatSp+IndexOptical/UV-to-X-ray index (4)meta.code;spect.indexfloatlogL2keVLog of the 2keV luminosity density (5)log(1e-07W.Hz**-1)phys.luminosity;em.X-ray.softfloatlogL250nmLog of the 250nm luminosity density (5)log(1e-07W.Hz**-1)phys.luminosity;em.UV.200-300nmfloatimagSDSS PSF i-band magnitudemagphot.mag;em.opt.Ifloatg-iRelative g-i color index (6)magphot.color;em.opt.B;em.opt.IfloatFlag[0/1] X-ray upper limit (0) or detection (1)meta.code.errorintXrayFind out all X-ray in VizieR in a 1'-diameter.meta.ref.urlchar_RAPosition (from SDSS name) (right ascension part)degpos.eq.ra;meta.main_DEPosition (from SDSS name) (declination part)degpos.eq.dec;meta.main