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<ri:Resource created="2007-10-01T21:41:43Z" 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 strong MgII absorbers</title><shortName>J/ApJ/639/766</shortName><identifier>ivo://CDS.VizieR/J/ApJ/639/766</identifier><altIdentifier>doi:10.26093/cds/vizier.16390766</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Prochter G.E.</name></creator><creator><name>Prochaska J.X.</name></creator><creator><name>Burles S.M.</name></creator><date role="Updated">2007-10-01T21:46:32Z</date><date role="Created">2007-10-01T21:41:43Z</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>line-intensities</subject><subject>redshifted</subject><description>We present the results of two complementary investigations into the nature of strong (rest equivalent width, Wr&gt;1.0{AA}) MgII absorption systems at high redshift. The first line of questioning examines the complete Sloan Digital Sky Survey Data Release 3 set of quasar spectra to determine the evolution of the incidence of strong MgII absorption. This search resulted in 7421 confirmed MgII systems of Wr&gt;1.0{AA}, yielding a &gt;95% complete statistical sample of 4835 absorbers (systems detected in S/N&gt;7 spectral regions) spanning a redshift range 0.35&lt;z&lt;2.3.</description><source format="bibcode">2006ApJ...639..766P</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/639/766</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>http://www.sdss.org : SDSS Home Page</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/354/L25">J/MNRAS/354/L25 : MgII absorbers in SDSS QSOs (Bouche+, 2004)</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/ApJ/639/766</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/639/766</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/639/766</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/639/766</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/639/766</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South 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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>SDSS</name><description>Quasar SDSS identification (JHHMMSS.ss+DDMMSS.ss)</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="20*">char</dataType></column><column><name>RAJ2000</name><description>Hour of Right Ascension (J2000)</description><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DEJ2000</name><description>Degree of Declination (J2000)</description><ucd>pos.eq.dec;meta.main</ucd></column><column><name>zQSO</name><description>Emission redshift</description><ucd>src.redshift</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>zMgII</name><description>The MgII redshift</description><ucd>src.redshift</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>EWr</name><description>The MgII rest equivalent width in Angstroms</description><unit>0.1nm</unit><ucd>spect.line.eqWidth</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>SDSSdata</name><description>View the SDSS details</description><ucd>meta.ref.url</ucd><dataType xsi:type="vs:VOTableType" arraysize="*">char</dataType></column></table></schema></tableset></ri:Resource>