J/A+A/330/108ivo://CDS.VizieR/J/A+A/330/108doi:10.26093/cds/vizier.33300108CDSYuan W.Brinkmann W.Siebert J.Voges W.1998-02-18T06:50:42Z1998-02-18T07:49:40ZCDS 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 radio-quiet quasars or quasars without radio detection from the Veron-Cetty - Veron catalogue (1993, VV93, Cat. <VII/166>) detected by ROSAT in the ALL-SKY SURVEY (RASS, Voges 1992, in Proc. of the ISY Conference `Space Science', ESA ISY-3, ESA Publications, p.9, See Cat. <IX/10>), as targets of pointed observations, or as serendipitous sources from pointed observations publicly available from the ROSAT point source catalogue (ROSAT-SRC, Voges et al. 1995, Cat. <IX/11>). For all sources we used the results of the Standard Analysis Software System (SASS, Voges et al. 1992, in Proc. of the ISY Conference `Space Science', ESA ISY-3, ESA Publications, p.223), employing the most recent processing for the Survey data (RASS-II, Voges et al. 1996, Cat. <IX/10>). The total number of quasars is 846. 69 of the radio-quiet objects with radio detections have already been presented in a previous paper (Brinkmann, Yuan, & Siebert 1997, Cat. <J/A+A/319/413>) using the RASS-I results. 17 objects were found to be radio-loud from recent radio surveys and were marked in the table. When available, the power law photon indices and the corresponding absorption column densities (NH) were estimated from the two hardness ratios given by the SASS, both with free fitted NH and for Galactic absorption. The unabsorbed X-ray flux densities in the ROSAT band (0.1-2.4keV) were calculated from the count rates using the energy to counts conversion factor for power law spectra and Galactic absorption. As the photon index we used the value obtained for the individual source if the estimated 1-{sigma} error is smaller than 0.5, otherwise we used the redshift-dependent mean value (see the paper for details).1998A&A...330..108Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/330/108CatalogResearchIsServedByTAP 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/319/413 : ROSAT detected quasars. I. (Brinkmann+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/330/108https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/330/108http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/330/108https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/330/108https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/330/108http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/330/108GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/330/108/table1 (ROSAT detected radio-quiet quasars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/330/108/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/330/108/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/330/108/table1?GETtext/xml+votable180.050000true0.845417-26.0552780.005555555555555556ROSAThttps://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/330/108?format=asciiX-raydefaultJ/A+A/330/108/table1ROSAT detected radio-quiet 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.notecharVV93Alternative name from VV93 (Cat. <VII/166>)meta.idcharRAJ2000Right Ascension J2000 (hours)pos.eq.ra;meta.mainDEJ2000Declination J2000 (Sign or blank)pos.eq.dec;meta.mainz*? Redshiftsrc.redshiftfloatnullableVmag*? Magnitude from VV93 (Cat. <VII/166>)magphot.mag;em.opt.VfloatnullableFXUnabsorbed X-ray flux density (0.1-2.4keV)1e-12mW.m**-2phot.flux;em.X-rayfloate_FX*Error of X-ray flux density1e-12mW.m**-2stat.errorfloatGfree*? X-ray photon index (free fitted NH)spect.indexfloatnullableE_Gfree*? Positive error of photon index Gfreestat.errorfloatnullablee_Gfree*? Negative error of photon index Gfreestat.errorfloatnullableNH? X-ray absorbing column density1e+20cm**-2phys.columnDensityfloatnullableE_NH*? Positive error of column density1e+20cm**-2stat.errorfloatnullablee_NH*? Negative error of column density1e+20cm**-2stat.errorfloatnullableGgal*? X-ray photon index (Galactic absorption)spect.indexfloatnullableE_Ggal*? Positive error of photon index Ggalstat.errorfloatnullablee_Ggal*? Negative error of photon index Ggalstat.errorfloatnullableNHgal*? Galactic column density1e+20cm**-2phys.columnDensityfloatnullableCom*[S P] Notes on the X-ray detectionmeta.notecharRef*? Reference for the quoted spectral indexmeta.refchar