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<ri:Resource created="2008-09-07T08:22:56Z" 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>Redshifts in the SFQS survey</title><shortName>J/AJ/131/2788</shortName><identifier>ivo://CDS.VizieR/J/AJ/131/2788</identifier><altIdentifier>doi:10.26093/cds/vizier.51312788</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Jiang L.</name></creator><creator><name>Fan X.</name></creator><creator><name>Cool R.J.</name></creator><creator><name>Eisenstein D.J.</name></creator><creator><name>Zehavi I.</name></creator><creator><name>Richards G.T.,Scranton R.</name></creator><creator><name>Johnston D.</name></creator><creator><name>Strauss M.A.</name></creator><creator><name>Schneider D.P.</name></creator><creator><name>Brinkmann J.</name></creator><date role="Updated">2008-09-07T08:26:52Z</date><date role="Created">2008-09-07T08:22:56Z</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>quasars</subject><subject>visible-astronomy</subject><subject>sloan-photometry</subject><subject>redshifted</subject><description>In this paper we present the first results of a deep spectroscopic survey of faint quasars in the Sloan Digital Sky Survey (SDSS) Southern Survey, a deep survey carried out by repeatedly imaging a 270{deg}^2^ area. Quasar candidates were selected from the deep data with good completeness over 0&lt;z&lt;5 and 2-3mag fainter than the SDSS main survey. Spectroscopic follow-up was carried out on the 6.5m MMT with Hectospec. The preliminary sample of this SDSS faint quasar survey (SFQS) covers ~3.9{deg}^2^, contains 414 quasars, and reaches g=22.5.</description><source format="bibcode">2006AJ....131.2788J</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/131/2788</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. (Schneider+, 2005)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/VII/241">VII/241 : The 2dF QSO Redshift Survey (Croom+ 2004)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/121/31">J/AJ/121/31 : High-redshift quasars in SDSS (Fan+, 2001)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/155/257">J/ApJS/155/257 : NBC Quasar Candidate Catalog (Richards+, 2004)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/131/2766">J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006)</relatedResource><relatedResource>http://www.sdss.org : SDSS Home Page</relatedResource></relationship></content><rights>https://cds.unistra.fr/vizier-org/licences_vizier.html</rights><capability><interface xsi:type="vr:WebBrowser"><accessURL use="full">https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/131/2788</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/131/2788</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/131/2788</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/131/2788</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/131/2788</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/131/2788</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface></capability><capability standardID="ivo://ivoa.net/std/TAP#aux"><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://tapvizier.cds.unistra.fr/TAPVizieR/tap</accessURL></interface></capability><capability xsi:type="cs:ConeSearch" standardID="ivo://ivoa.net/std/ConeSearch"><description>Cone search capability for table J/AJ/131/2788/table2 (Quasar sample for the SFQS survey)</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/131/2788/table2?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/131/2788/table2?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/131/2788/table2?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>349.007</ra><dec>-0.2102778</dec><sr>0.005555555555555556</sr></testQuery></capability><coverage><spatial>6/17811 17814 17817 17820 18751 18767 18776 18778 18794 18800 18837 18880 19091 19094 19096 19097 19099 19100</spatial><spectral>3.588997330618193e-19 4.653515163505597e-19</spectral><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/131/2788?format=ascii</footprint><waveband>Optical</waveband></coverage><tableset><schema><name>default</name><table><name>J/AJ/131/2788/table2</name><description>Quasar sample for the SFQS survey</description><column><name>recno</name><description>Record number assigned by the VizieR team. 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