SDSS-DR7 QSOs with X-ray and UV luminosities J/ApJ/819/154 ivo://CDS.VizieR/J/ApJ/819/154 doi:10.26093/cds/vizier.18190154 CDS Lusso E. Risaliti G. 2018-01-05T08:57:04Z 2016-06-22T09:41:54Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr quasars redshifted x-ray-sources ultraviolet-astronomy surveys The observed relation between the soft X-ray and the optical-ultraviolet emission in active galactic nuclei (AGNs) is nonlinear and it is usually parametrized as a dependence between the logarithm of the monochromatic luminosity at 2500{AA} and at 2keV. Previous investigations have found that the dispersion of this relation is rather high (~0.35-0.4 in log units), which may be caused by measurement uncertainties, variability, and intrinsic dispersion due to differences in the AGN physical properties (e.g., different accretion modes). We show that, once optically selected quasars with homogeneous SED and X-ray detection are selected, and dust reddened and/or gas obscured objects are not included, the measured dispersion drops to significantly lower values (i.e., ~0.21-0.24dex). We show that the residual dispersion is due to some extent to variability, and to remaining measurement uncertainties. Therefore, the real physical intrinsic dispersion should be <0.21dex. Such a tight relation, valid over four decades in luminosity, must be the manifestation of an intrinsic (and universal) physical relation between the disk, emitting the primary radiation, and the hot electron corona emitting X-rays. 2016ApJ...819..154L https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/819/154 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to IX/46 : XMM-Newton Serendipitous Source Catalogue 3XMM-DR5 (XMM-SSC, 2016) VII/270 : SDSS quasar catalog: tenth data release (Paris+, 2014) VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010) J/PAZh/42/313 : 3XMM-DR4 QSO candidates at 3<z<5.5 (Khorunzhev+, 2016) J/ApJ/815/33 : A Hubble diagram for quasars (Risaliti+, 2015) J/ApJS/201/10 : SDSS quasar catalog with Swift observations (Wu+, 2012) J/ApJ/746/54 : Chandra X-ray observations of SDSS-DR5 QSOs (Gibson+, 2012) J/ApJ/726/20 : X-ray emission from quasars (Miller+, 2011) J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011) J/A+A/519/A17 : X-ray/UV ratio of 2XMM AGN (Vagnetti+, 2010) J/MNRAS/405/2302 : Improved redshifts for SDSS quasar spectra (Hewett+, 2010) J/A+A/512/A34 : XMM-COSMOS Type 1 AGNs (Lusso+, 2010) J/ApJS/183/17 : The SDSS DR5/XMM-Newton quasar survey (Young+, 2009) J/ApJ/692/758 : BAL QSOs in SDSS-DR5 (Gibson+, 2009) J/A+A/493/339 : XMM-Newton serendipitous Survey. V. (Watson+, 2009) J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006) J/AJ/130/387 : SDSS-ROSAT AGN data (Strateva+, 2005) J/ApJS/92/53 : Einstein database of quasars. I. (Wilkes+, 1994) http://xmmssc.irap.omp.eu/Catalogue/3XMM-DR5/3XMM_DR5.html : 3XMM-DR5 home page http://heasarc.gsfc.nasa.gov/W3Browse/all/xmmomsuss.html : XMM-OM SUSS catalog https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/819/154 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/819/154 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/819/154 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/819/154 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/819/154 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/819/154 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJ/819/154/table1 (Optical and X-ray properties of the main X-ray detected quasar sample) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/819/154/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/819/154/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/819/154/table1? GET text/xml+votable 180.0 50000 true 0.98121306 0.12680389 0.005555555555555556 Cone search capability for table J/ApJ/819/154/table2 (Optical and X-ray properties of the main X-ray censored quasar sample) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/819/154/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/819/154/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/819/154/table2? GET text/xml+votable 180.0 50000 true 1.35469 0.2958989 0.005555555555555556 5/1241 1454 1519 1633 1810 4441 4454 4758 5802 6814 6/0 524 526 1700 1701 1702 4116 4118 4123 4125 4130 4146 4158 4159 4163 4206 4221 4225 4227 4245 4255 4285 4298 4312 4313 4314 4327 4333 4340 4345 4369 4381 4397 4403 4424 4438 4439 4448 4450 4511 4512 4531 4536 4537 4540 4567 4575 4629 4653 4672 4689 4691 4695 4698 4715 4740 4748 4765 4772 4790 4804 4821 4831 4834 4835 4838 4842 4859 4862 4865 4867 4870 4921 4923 4924 4939 4942 4943 4946 4954 4955 4976 4982 4992 5009 5017 5033 5051 5067 5069 5091 5099 5109 5112 5116 5118 5128 5130 5135 5202 5241 5244 5246 5247 5274 5284 5287 5292 5293 5304 5305 5307 5333 5358 5363 5367 5369 5370 5417 5420 5423 5429 5434 5437 5469 5470 5471 5506 5512 5523 5528 5535 5536 5538 5560 5564 5568 5569 5570 5576 5587 5607 5610 5618 5629 5630 5646 5668 5670 5671 5675 5682 5685 5687 5689 5699 5701 5711 5712 5715 5725 5727 5728 5731 5733 5749 5751 5758 5762 5780 5794 5798 5799 5804 5805 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32484 32486 32500 36733 36764 36765 36774 36777 36778 36779 36780 36782 36785 36786 36792 36794 36861 45044 45046 45054 49009 49021 49094 49101 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/819/154?format=ascii Optical X-ray UV default J/ApJ/819/154/table1 Optical and X-ray properties of the main X-ray detected quasar sample recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS Quasar Name, SDSS identifier (HHMMSS.ss+DDMMSS.s; J2000) meta.id;meta.main char RAJ2000 Right Ascension (J2000) deg pos.eq.ra;meta.main DEJ2000 Declination (J2000) deg pos.eq.dec;meta.main z [0.06/5] Spectroscopic redshifts, SDSS-DR7 quasar catalogue (G1) src.redshift;pos.heliocentric double lgLUV [27.7/32.5] Monochromatic UV luminosity at 2500{AA}, in erg/s/Hz units (G2) log(1e-07W.Hz**-1) phys.luminosity;em.UV float lgL2 [23.5/28.1] Monochromatic luminosity at 2keV, in erg/s/Hz units (G3) log(1e-07W.Hz**-1) phys.luminosity;em.X-ray.soft float e_lgL2 [0.01/0.7] Uncertainty in lgL2 log(1e-07W.Hz**-1) stat.error double Source Unique X-ray detection ID in the 3XMM-DR5 catalog (1) meta.id.cross gamma1 [-2/2.7]? Optical (0.3-1um) SED power-law fit slope spect.index double nullable gamma2 [-7/2.5]? UV (1450-3000{AA}) SED power-law fit slope spect.index double nullable gammaX [-1.8/4.5] X-ray index from the slope of the (XMM 1-5keV) luminosities (2) spect.index double S/N [2/399] X-ray signal-to-noise (3) stat.snr double Sloan Display the online SDSS data for the nearest object meta.ref.url char Simbad Simbad column added by the CDS meta.ref.url char NED Simbad column added by the CDS meta.ref.url char
J/ApJ/819/154/table2 Optical and X-ray properties of the main X-ray censored quasar sample recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int SDSS Quasar Name, SDSS identifier (HHMMSS.ss+DDMMSS.s; J2000) meta.id;meta.main char RAJ2000 Right Ascension in decimal degrees (J2000) deg pos.eq.ra;meta.main DEJ2000 Declination in decimal degrees (J2000) deg pos.eq.dec;meta.main z [0.2/4.8] Spectroscopic redshifts, SDSS-DR7 quasar catalogue (G1) src.redshift;pos.heliocentric double lgLUV [28.5/32] Monochromatic UV luminosity at 2500{AA}, in erg/s/Hz (G2) log(1e-07W.Hz**-1) phys.luminosity;em.UV float lgL2 [24.5/28.6] Monochromatic luminosity at 2keV, in erg/s/Hz (G3) log(1e-07W.Hz**-1) phys.luminosity;em.X-ray.soft float e_lgL2 [0.05/0.2] Uncertainty in lgL2 log(1e-07W.Hz**-1) stat.error double gamma1 [-1.7/2.4]? Optical (0.3-1um) SED power-law fit slope spect.index double nullable gamma2 [-3.3/1.8] UV (1450-3000{AA}) SED power-law fit slope spect.index double Sloan Display the online SDSS data for the nearest object meta.ref.url char Simbad Simbad column added by the CDS meta.ref.url char NED Simbad column added by the CDS meta.ref.url char