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<ri:Resource created="2011-07-30T17:53:41Z" status="active" updated="2025-05-19T09:50:00Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>SDSS DR3 flat-spectrum radio quasars</title><shortName>J/MNRAS/397/1713</shortName><identifier>ivo://CDS.VizieR/J/MNRAS/397/1713</identifier><altIdentifier>doi:10.26093/cds/vizier.73971713</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Chen Z.</name></creator><creator><name>Gu M.</name></creator><creator><name>Cao X.</name></creator><date role="Updated">2024-07-09T20:15:26Z</date><date role="Created">2011-07-30T17:53:41Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>surveys</subject><subject>quasars</subject><subject>spectroscopy</subject><subject>redshifted</subject><description>We constructed a sample of 185 flat-spectrum radio quasars (FSRQs) by cross-correlating Shen et al.'s (2006MNRAS.369.1639S) Sloan Digital Sky Survey Data Release 3 (SDSS DR3) X-ray quasar sample with the Faint Images of the Radio Sky at Twenty Centimeters (FIRST) and Green Bank 6-cm survey (GB6) radio catalogues. From the spectral energy distribution (SED) constructed using multi-band (radio, UV, optical, infrared and X-ray) data, we derived the synchrotron peak frequency and peak luminosity. The black hole mass MBH and the broad-line region (BLR) luminosity (then the bolometric luminosity Lbol) were obtained by measuring the linewidth and strength of broad emission lines from SDSS spectra. We define a subsample of 118 FSRQs for which non-thermal jet emission is thought to dominate over thermal emission from the accretion disc and host galaxy.</description><source format="bibcode">2009MNRAS.397.1713C</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/397/1713</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship><relationship><relationshipType>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/VII/243">VII/243 : SDSS quasar catalog. III. 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Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>S</name><description>Simbad column added by the CDS</description><ucd>meta.id;meta.dataset</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>SDSS</name><description>Source SDSS name (JHHMMSS.s+DDMMSS.s)</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="18*">char</dataType></column><column><name>logMbh</name><description>Black hole mass</description><unit>log(solMass)</unit><ucd>phys.mass</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>lognuLnu</name><description>Synchrotron peak luminosity</description><unit>log(1e-07W)</unit><ucd>phys.luminosity</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>logLblr</name><description>Broad-line region luminosity</description><unit>log(1e-07W)</unit><ucd>phys.luminosity</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>logLbol</name><description>Bolometric luminosity</description><unit>log(1e-07W)</unit><ucd>phys.luminosity</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>lognu.p</name><description>Synchrotron peak frequency</description><unit>log(Hz)</unit><ucd>em.freq;stat.max</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>alfRO</name><description>Spectral index between the rest-frame frequencies of 5GHz and 5000{AA}</description><ucd>spect.index</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>alfOX</name><description>Spectral index between the rest-frame frequencies of 5000{AA} and 1keV</description><ucd>spect.index</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>alfRX</name><description>Spectral index between the rest-frame frequencies of 5GHz and 1keV</description><ucd>spect.index</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Sloan</name><description>Display the SDSS data for this quasar</description><ucd>meta.ref.url</ucd><dataType xsi:type="vs:VOTableType" arraysize="*">char</dataType></column><column><name>DR3</name><description>Details from SDSS-DR3 QSO catalog (Schneider et al. 2005, Cat. 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