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<ri:Resource created="2000-03-16T08:51:02Z" status="active" updated="2025-05-19T09:50:00Z" version="1.2" 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/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>Polarization of broad absorption line QSOs</title><shortName>J/ApJ/512/125</shortName><identifier>ivo://CDS.VizieR/J/ApJ/512/125</identifier><altIdentifier>doi:10.26093/cds/vizier.15120125</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Schmidt G.D.</name></creator><creator><name>Hines D.C.</name></creator><date role="Updated">2000-03-16T07:51:06Z</date><date role="Created">2000-03-16T08:51:02Z</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>polarimetry</subject><subject>quasars</subject><subject>surveys</subject><description>We present the combined results of optical polarization surveys of QSOs showing broad absorption lines (BALQSOs) conducted at the Steward and McDonald Observatories. The merged list of 53 objects provides the first statistical justification for claims of the tendency of BALQSOs to show stronger than average polarization, with a typical BALQSO being polarized a factor 2.4 times greater than a QSO from an optical survey selected without regard for absorption lines. Spectropolarimetry of sufficient quality to distinguish the polarization of emission lines versus absorption troughs versus continuum is also presented for six objects from the survey.</description><source format="bibcode">1999ApJ...512..125S</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/512/125</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>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/332/410">J/A+A/332/410 : Quasar polarization (Hutsemekers 1998)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/340/371">J/A+A/340/371 : Quasar polarization (Hutsemekers+ 1998)</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/512/125</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/512/125</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/512/125</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/512/125</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/512/125</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/512/125</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><coverage><footprint ivo-id="ivo://ivoa.net/std/moc"/><waveband>Optical</waveband></coverage><tableset><schema><name>default</name><table><name>J/ApJ/512/125/table1</name><description>Polarization survey of QSOs</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Name</name><description>QSO object name</description><dataType xsi:type="vs:VOTableType" arraysize="14*">char</dataType></column><column><name>z</name><description>Redshift of Name</description><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>f_Pol</name><description>[Sum] Indicates polarization and position angles are error-weighted means</description><dataType xsi:type="vs:VOTableType" arraysize="3*">char</dataType></column><column><name>Obs</name><description>? Year of observation</description><flag>nullable</flag></column><column><name>UpR.D</name><description>? Indicates observations carried out over a range of days and is the upper value</description><unit>d</unit><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>Tele</name><description>Telescope used. (1)</description><dataType xsi:type="vs:VOTableType" arraysize="8*">char</dataType></column><column><name>Band</name><description>Filter band of the observations (2)</description><dataType xsi:type="vs:VOTableType" arraysize="5*">char</dataType></column><column><name>r_Band</name><description>[b] Indicates observation obtained by B. Wills 1998, private communication</description><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>Pol</name><description>Degree of polarization</description><unit>%</unit><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_Pol</name><description>Uncertainty in Pol</description><unit>%</unit><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>PolPA</name><description>Position angle</description><unit>deg</unit><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_PolPA</name><description>Uncertainty in PolPA</description><unit>deg</unit><dataType xsi:type="vs:VOTableType">float</dataType></column></table></schema></tableset></ri:Resource>