J/A+A/319/413ivo://CDS.VizieR/J/A+A/319/413doi:10.26093/cds/vizier.33190413CDSBrinkmann W.Yuan W.and Siebert J.1997-12-09T16:53:33Z1997-12-09T17:53:28ZCDS support team

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

cds-question@unistra.frquasarsx-ray-sourcesWe have compiled a sample of all quasars with measured radio emission from the Veron-Cetty - Veron catalogue (1993, VV93 <VII/166>) detected by ROSAT in the ALL-SKY SURVEY (RASS, Voges 1992), as targets of pointed observations, or as serendipitous sources from pointed observations as publicly available from the ROSAT point source catalogue (ROSAT-SRC, Voges et al. 1995). The total number of ROSAT detected radio quasars from the above three sources is 654 objects. 69 of the objects are classified as radio-quiet using the defining line at a radio-loudness of 1.0, and 10 objects have no classification. The 5GHz data are from the 87GB radio survey, the NED database, or from the Veron-Cetty - Veron catalogue. The power law indices and their errors are estimated from the two hardness ratios given by the SASS assuming Galactic absorption. The X-ray flux densities in the ROSAT band (0.1-2.4keV) are calculated from the count rates using the energy to counts conversion factor for power law spectra and Galactic absorption. For the photon index we use the value obtained for a individual source if the estimated 1 sigma error is smaller than 0.5, otherwise we use the mean value 2.14.1997A&A...319..413Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/319/413CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/188 : Quasars and Active Galactic Nuclei (7th Ed.) (Veron+ 1996)IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1996)IX/11 : ROSAT Source Catalog (Voges+ 1994)J/A+A/330/108 : ROSAT detected quasars. II. (Yuan+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/319/413https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/319/413http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/319/413https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/319/413https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/319/413http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/319/413GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/319/413/table1 (654 ROSAT detected radio quasars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/319/413/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/319/413/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/319/413/table1?GETtext/xml+votable180.050000true1.333755.4030560.005555555555555556ROSAThttps://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/319/413?format=asciiX-raydefaultJ/A+A/319/413/table1654 ROSAT detected radio quasarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIAUIAU name of the objectmeta.id;meta.maincharn_IAU[ *?!] A flag for classificationmeta.notecharName*Alternative name from VV93 <VII/166>meta.idcharRAJ2000Right ascension J2000 (hours)pos.eq.ra;meta.mainDEJ2000Declination signpos.eq.dec;meta.mainnullablez*[]? Redshiftsrc.redshiftfloatVmag*[]? Magnitude from VV93 <VII/166>magphot.mag;em.opt.VfloatF6cm[]? 6cm radio flux densityJyphot.flux.density;em.radio.3-6GHzfloatalpha_r[]? Radio spectral indexspect.indexfloatFx[] Unabsorbed X-ray flux density1e-12mW.m**-2phot.flux;em.X-rayfloate_Fx*[] Error of X-ray flux density1e-12mW.m**-2stat.errorfloatGamma*[]? X-ray spectral photon indexspect.indexfloatE_Gamma*[]? Positive error of photon indexstat.errorfloate_Gamma*[]? Negative error of photon indexstat.errorfloatCom*[SP ] Notes on the X-ray detectionmeta.notecharRef*? Reference for the quoted spectral indexmeta.refchar