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<ri:Resource created="2008-08-20T14:59:10Z" 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 AGN from ROSAT PSPC</title><shortName>J/AJ/132/1475</shortName><identifier>ivo://CDS.VizieR/J/AJ/132/1475</identifier><altIdentifier>doi:10.26093/cds/vizier.51321475</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Suchkov A.A.</name></creator><creator><name>Hanisch R.J.</name></creator><creator><name>Voges W.</name></creator><creator><name>Heckman T.M.</name></creator><date role="Updated">2008-08-20T15:06:11Z</date><date role="Created">2008-08-20T14:59:10Z</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>active-galactic-nuclei</subject><subject>radio-sources</subject><subject>x-ray-sources</subject><subject>visible-astronomy</subject><subject>sloan-photometry</subject><description>We present a sample of 1744 type 1 active galactic nuclei (AGNs) from the Sloan Digital Sky Survey Data Release 4 (SDSS DR4) spectroscopic catalog with X-ray counterparts in the White-Giommi-Angelini Catalog (WGACAT) of ROSAT PSPC pointed observations. Of 1744 X-ray sources, 1410 (80.9%) are new AGN identifications. Of 4574 SDSS DR4 AGNs for which we found radio matches in the catalog of radio sources from the Faint Images of the Radio Sky at Twenty cm survey, 224 turned up in our sample of SDSS X-ray AGNs. The sample objects are given in a catalog that contains optical and X-ray parameters and supporting data, including redshifts; it also contains radio emission parameters where available. We illustrate the content of our catalog and its potential for AGN science by providing statistical relationships for the catalog data.</description><source format="bibcode">2006AJ....132.1475S</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/132/1475</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/IX/31">IX/31 : The WGACAT version of ROSAT sources (White+ 2000)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/VIII/71">VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003)</relatedResource><relatedResource>http://www.sdss.org : 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