<?xml-stylesheet href='/static/xsl/oai.xsl' type='text/xsl'?>
<ri:Resource created="1999-02-27T13:32:12Z" status="active" updated="2025-06-13T15:25:00Z" 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>The Hamburg Quasar Survey. II.</title><shortName>J/A+AS/128/507</shortName><identifier>ivo://CDS.VizieR/J/A+AS/128/507</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Engels D.</name></creator><creator><name>Hagen H.-J.</name></creator><creator><name>Cordis L.</name></creator><creator><name>Koehler S.</name></creator><creator><name>Wisotzki L.</name></creator><creator><name>Reimers D.</name></creator><date role="Updated">2013-03-06T06:37:49Z</date><date role="Created">1999-02-27T13:32:12Z</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>redshifted</subject><subject>galaxies</subject><subject>spectroscopy</subject><description>The Hamburg Quasar Survey is a wide-angle objective prism survey for finding bright QSOs in the northern extragalactic sky (|b|&gt;20{deg}; {delta}&gt;0{deg}). The taking of the prism plates for 567 fields covering this area was completed in 1997. Including direct plates for fields with {delta}&gt; 20{deg} the plate archive contains now 1871 plates. In this paper we present a first list of 121 quasars, which were verified by slit spectroscopy in the years 1986-1991, while experiments to develop efficient selection techniques were made. The sample contains objects with brightnesses 15&lt;=B&lt;=19.5 and redshifts z&lt;=2.8 collected over various parts of the sky, for which objective prism plates were available at that time.</description><source format="bibcode">1998A&amp;AS..128..507E</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/128/507</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/J/A+AS/134/483">J/A+AS/134/483 : The Hamburg Quasar Survey. III. (Hagen+ 1999)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+AS/115/235">J/A+AS/115/235 : The Hamburg/ESO survey for bright QSOs. II. (Reimers+, 1996)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/358/77">J/A+A/358/77 : The Hamburg/ESO survey for bright QSOs. III (Wisotzki+, 2000)</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/A+AS/128/507</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/128/507</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/128/507</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/128/507</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/128/507</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/128/507</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/A+AS/128/507/table2-4 (Names, coordinates, redshift, observing dates, B magnitudes and comments)</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/128/507/table2-4?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/128/507/table2-4?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/128/507/table2-4?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>11.020703</ra><dec>1.561903</dec><sr>0.005555555555555556</sr></testQuery></capability><coverage><spatial>5/1459 1465 6/135 152 575 659 4908 4911 4921 4924 4996-4997 5008 5016 5753 5755 5835 5842-5844 5846 5848-5849 5851-5852 5854 5872-5873 5880 6266 7707 7709 7722 7725 7728 7730 7737 7815 7847 7858 7882 10086 10088 10202 10214 10222 10333 10764 10784 10874 10878 10950-10951 10953 10957-10960 10962-10964 10968-10970 10972 11050 11138 11543 11582 11591 11608 11631 11755 12371 15247 15267 15273-15274 16027 16034 16045 16074 16122 17874 17885 18115 18127 18274 18280-18281 19314 19494 20144 23269 23278 23427</spatial><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/128/507?format=ascii</footprint><waveband>Optical</waveband></coverage><tableset><schema><name>default</name><table><name>J/A+AS/128/507/table2-4</name><description>Names, coordinates, redshift, observing dates, B magnitudes and comments</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Name</name><description>Object Name</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="12*">char</dataType></column><column><name>RA1950</name><description>Right ascension (1950)</description><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DE1950</name><description>Declination (1950)</description><ucd>pos.eq.dec;meta.main</ucd></column><column><name>z</name><description>Redshift</description><ucd>src.redshift</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>ObsDate</name><description>Observing date</description><ucd>time.epoch</ucd><flag>nullable</flag></column><column><name>Bmag</name><description>B magnitude</description><unit>mag</unit><ucd>phot.mag;em.opt.B</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>spFile</name><description>Name of file (in this directory) containing the spectrum</description><ucd>meta.id;meta.file</ucd><dataType xsi:type="vs:VOTableType" arraysize="8*">char</dataType></column><column><name>Com</name><description>Comments</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="10*">char</dataType></column><column><name>_RA.icrs</name><description>Right ascension (ICRS) (computed by VizieR, not part of the original data)</description><ucd>pos.eq.ra</ucd><flag>nullable</flag><flag>indexed</flag></column><column><name>_DE.icrs</name><description>Declination (ICRS) (computed by VizieR, not part of the original data)</description><ucd>pos.eq.dec</ucd><flag>nullable</flag><flag>indexed</flag></column></table></schema></tableset></ri:Resource>