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<ri:Resource created="2011-10-11T08:54:40Z" 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>Galactic Bulge Valinhos Observatory Catalog</title><shortName>J/A+A/534/A91</shortName><identifier>ivo://CDS.VizieR/J/A+A/534/A91</identifier><altIdentifier>doi:10.26093/cds/vizier.35340091</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Teixeira R.</name></creator><creator><name>Galli P.A.B.</name></creator><creator><name>Benevides-Soares P.</name></creator><creator><name>Le Campion J.F.,Fidencio M.</name></creator><creator><name>Krone-Martins A.</name></creator><creator><name>Ducourant C.</name></creator><creator><name>Sinachopoulos D.</name></creator><date role="Updated">2017-09-19T14:21:08Z</date><date role="Created">2011-10-11T08:54:40Z</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>optical-observation</subject><subject>meridian-circles</subject><subject>milky-way-galaxy</subject><subject>proper-motions</subject><subject>infrared-photometry</subject><subject>effective-temperature</subject><description>The definition, construction and realization of a reference system is one of the oldest and most fundamental tasks of astronomy. Currently, the ICRS (International Celestial Reference System), realized by the ICRF (International Celestial Reference Frame) or ICRF2, is the reference system adopted by the IAU. It is based on the very precise VLBI positions of a few hundred compact extragalactic radio sources. Despite its excellent precision, the ICRF is far from providing a reference system that is available for the entire sky and accessible to all observers. The ICRF has to be densified and extended to other wavelengths, mainly to the optical domain where the astronomical activities are more intense. For this reason, the IAU has recommended and encouraged works in this direction over the years. Many of them were developed to give sometimes good positions and proper motions, but they are very limited in magnitude, while others are extremely dense and deep in magnitude but have low accuracy, mainly for the proper motions. Nevertheless, all these contributions are very important because they are complementary. We present a homogeneous and precise optical astrometric catalog that extends the ICRF in the direction of 12 low-extinction windows of the Galactic bulge and provides at the same time a useful database for kinematic studies.</description><source format="bibcode">2011A&amp;A...534A..91T</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/534/A91</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/II/246">II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+AS/136/261">J/A+AS/136/261 : Reference stars for 12 low-extinction fields (Dominici+ 1999)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+AS/139/321">J/A+AS/139/321 : Stellar variability towards Galactic Bulge (Dominici+ 1999)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/517/A44">J/A+A/517/A44 : Spitzer sources in the Galactic bulge (Uttenthaler+, 2010)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/194/18">J/ApJS/194/18 : The Galactic Bulge Survey: X-ray observations (Jonker+, 2011)</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+A/534/A91</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/534/A91</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/534/A91</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/534/A91</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/534/A91</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/534/A91</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+A/534/A91/table2 (Galactic Bulge Valinhos Observatory Catalog, GBVOC)</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/534/A91/table2?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/534/A91/table2?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/534/A91/table2?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>271.9459025</ra><dec>-31.817764722</dec><sr>0.005555555555555556</sr></testQuery></capability><coverage><spatial>5/7186 10544 6/28702 28721 28724 28768-28770 28796-28798 28986 29072-29073 29147 29150 29169 29172 29857 29859-29860 42281 42284 42291-42294 42331-42332 42334 47847 47856 47858</spatial><spectral>1.1166583743361574e-19 1.7003137259100215e-19</spectral><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/534/A91?format=ascii</footprint><waveband>Optical</waveband><waveband>Infrared</waveband></coverage><tableset><schema><name>default</name><table><name>J/A+A/534/A91/table2</name><description>Galactic Bulge Valinhos Observatory Catalog, GBVOC</description><column><name>Vmag</name><description>Valinhos merdian magnitude</description><unit>mag</unit><ucd>phot.mag;em.opt.V</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>recno</name><description>Record number assigned by the VizieR team. 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