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<ri:Resource created="2011-08-12T10:52:46Z" 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>Type 2 quasars from SDSS</title><shortName>J/AJ/136/2373</shortName><identifier>ivo://CDS.VizieR/J/AJ/136/2373</identifier><altIdentifier>doi:10.26093/cds/vizier.51362373</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Reyes R.</name></creator><creator><name>Zakamska N.L.</name></creator><creator><name>Strauss M.A.</name></creator><creator><name>Green J.</name></creator><creator><name>Krolik J.H.</name></creator><creator><name>Shen Y.,Richards G.T.</name></creator><creator><name>Anderson S.F.</name></creator><creator><name>Schneider D.P.</name></creator><date role="Updated">2019-06-04T11:13:02Z</date><date role="Created">2011-08-12T10:52:46Z</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>active-galactic-nuclei</subject><subject>visible-astronomy</subject><subject>sloan-photometry</subject><subject>radio-sources</subject><description>Type 2 quasars are luminous active galactic nuclei whose central regions are obscured by large amounts of gas and dust. In this paper, we present a catalog of type 2 quasars from the Sloan Digital Sky Survey, selected based on their optical emission lines. 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