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<ri:Resource created="1997-12-09T20:44:30Z" 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>Polarimetric Observations of BL Lac</title><shortName>J/AZh/71/717</shortName><identifier>ivo://CDS.VizieR/J/AZh/71/717</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Gagen-Torn V.A.</name></creator><creator><name>Marchenko S.G.</name></creator><creator><name>Yurchenko A.V.</name></creator><creator><name>Yakovleva V.A.</name></creator><date role="Updated">1997-12-09T19:44:33Z</date><date role="Created">1997-12-09T20:44:30Z</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>bl-lacertae-objects</subject><subject>polarimetry</subject><description>This paper continues publications that report the results of photoelectric polarization measurements of the blazar BL Lac. Earlier, we published observational data obtained over the period 1969-1982 (Hagen-Torn et al., 1984AZh....61..925H). 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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>Date</name><description>Date of observation (month, day)</description><ucd>time.epoch</ucd><dataType xsi:type="vs:VOTableType" arraysize="14*">char</dataType></column><column><name>Year</name><description>[1983/1991] Year of the observation.</description><unit>yr</unit><ucd>time.epoch</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>JD</name><description>[2445499/2448514] Julian Day</description><unit>d</unit><ucd>time.epoch</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>P</name><description>Polarization parameters P</description><unit>%</unit><ucd>phys.polarization</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>u_P</name><description>Uncertainty flag on P</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>e_P</name><description>? Error on P</description><unit>%</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Q</name><description>Polarization parameters Q</description><unit>deg</unit><ucd>phys.polarization.stokes</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>u_Q</name><description>Uncertainty flag on Q</description><ucd>meta.code.error</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>e_Q</name><description>? Error on Q</description><unit>deg</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>d</name><description>[1,3] Flag for aperture used in the observation: 1 - 18.8" ; 3 - 26.7"</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Fo/Fb</name><description>Ratio of the object flux to the background flux</description><ucd>phot.flux;arith.ratio</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column></table></schema></tableset></ri:Resource>