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<ri:Resource created="2004-06-28T19:49:57Z" 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>2001-2003 BV differential photometry of SW Lac</title><shortName>J/A+A/420/1039</shortName><identifier>ivo://CDS.VizieR/J/A+A/420/1039</identifier><altIdentifier>doi:10.26093/cds/vizier.34201039</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Albayrak B.</name></creator><creator><name>Djurasevic G.</name></creator><creator><name>Erkapic S.</name></creator><creator><name>Tanriverdi T.</name></creator><date role="Updated">2017-06-28T06:58:30Z</date><date role="Created">2004-06-28T19:49:57Z</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>eclipsing-binary-stars</subject><subject>visible-astronomy</subject><subject>broad-band-photometry</subject><description>In the present study, the activity of the eclipsing binary of the W UMa-type system SW Lac is examined by analysing the new BV photoelectric observations obtained in 2001, 2002 and 2003 at the Ankara University Observatory. During this period, the seasonal light curves show significant differences and asymmetries. 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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>HJD</name><description>Heliocentric Julian date</description><unit>d</unit><ucd>time.epoch</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Phase</name><description>Orbital phase</description><ucd>time.phase</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>DBmag</name><description>DeltaB magnitude</description><unit>mag</unit><ucd>phot.mag;arith.diff</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>DVmag</name><description>DeltaV magnitude</description><unit>mag</unit><ucd>phot.mag;arith.diff</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column></table><table><name>J/A+A/420/1039/obs2001</name><description>Photoelectric Observations Obtained in 2001 season for SW Lac</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>HJD</name><description>Heliocentric Julian date</description><unit>d</unit><ucd>time.epoch</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>Phase</name><description>Orbital phase</description><ucd>time.phase</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>DBmag</name><description>DeltaB magnitude</description><unit>mag</unit><ucd>phot.mag;arith.diff</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>DVmag</name><description>DeltaV magnitude</description><unit>mag</unit><ucd>phot.mag;arith.diff</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column></table><table><name>J/A+A/420/1039/obs2002</name><description>Photoelectric Observations Obtained in 2002 season for SW Lac</description><column><name>recno</name><description>Record number assigned by the VizieR team. 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