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<ri:Resource created="2018-02-07T17:08:53Z" 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>Gaia-PS1-SDSS (GPS1) proper motion catalog</title><shortName>I/343</shortName><identifier>ivo://CDS.VizieR/I/343</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Tian H.-J.</name></creator><creator><name>Gupta P.</name></creator><creator><name>Sesar B.</name></creator><creator><name>Rix H.-W.</name></creator><creator><name>Martin N.F.</name></creator><creator><name>Liu C.</name></creator><creator><name>Goldman B.,Platais I.</name></creator><creator><name>Kudritzki R.-P.</name></creator><creator><name>Waters C.Z.</name></creator><date role="Updated">2023-12-19T14:07:12Z</date><date role="Created">2018-02-07T17:08:53Z</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>proper-motions</subject><subject>infrared-photometry</subject><subject>visible-astronomy</subject><subject>Wide-band photometry</subject><subject>astrometry</subject><subject>surveys</subject><description>We combine Gaia DR1, PS1, Sloan Digital Sky Survey (SDSS), and 2MASS astrometry to measure proper motions for 350 million sources across three-fourths of the sky down to a magnitude of m_r_~20. Using positions of galaxies from PS1, we build a common reference frame for the multi-epoch PS1, single-epoch SDSS and 2MASS data, and calibrate the data in small angular patches to this frame. As the Gaia DR1 excludes resolved galaxy images, we choose a different approach to calibrate its positions to this reference frame: we exploit the fact that the proper motions of stars in these patches are linear. By simultaneously fitting the positions of stars at different epochs of-Gaia DR1, PS1, SDSS, and 2MASS-we construct an extensive catalog of proper motions dubbed GPS1. GPS1 has a characteristic systematic error of less than 0.3mas/yr and a typical precision of 1.5-2.0mas/yr. The proper motions have been validated using galaxies, open clusters, distant giant stars, and QSOs. In comparison with other published faint proper motion catalogs, GPS1's systematic error (&lt;0.3mas/yr) should be nearly an order of magnitude better than that of PPMXL and UCAC4 (&gt;2.0mas/yr). Similarly, its precision (~1.5mas/yr) is a four-fold improvement relative to PPMXL and UCAC4 (~6.0mas/yr). For QSOs, the precision of GPS1 is found to be worse (~2.0-3.0mas/yr), possibly due to their particular differential chromatic refraction.</description><source format="bibcode">2017ApJS..232....4T</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/I/343</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/I/312">I/312 : PPMX Catalog of positions and proper motions (Roeser+ 2008)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/I/317">I/317 : The PPMXL Catalog (Roeser+ 2010)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/I/324">I/324 : The Initial Gaia Source List (IGSL) (Smart, 2013)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/I/337">I/337 : Gaia DR1 (Gaia Collaboration, 2016)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/V/139">V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/II/349">II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/127/3034">J/AJ/127/3034 : Proper-motion catalog combining USNO-B and SDSS (Munn+, 2004)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/750/99">J/ApJ/750/99 : The Pan-STARRS1 photometric system (Tonry+, 2012)</relatedResource><relatedResource>http://dc.zah.uni-heidelberg.de/gps1/q/cone/info : The GPS1 catalog on GAVO</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=I/343</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=I/343</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=I/343</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=I/343</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=I/343</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=I/343</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 I/343/gps1 (Gaia-PS1-SDSS (GPS1) proper motion catalog, output (on a total of 345,274,875 sources))</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/I/343/gps1?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/I/343/gps1?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/I/343/gps1?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>44.996132993</ra><dec>0.005636496</dec><sr>0.005555555555555556</sr></testQuery></capability><coverage><spatial>6/0</spatial><spectral>8.650015785639275e-20 4.670716440110116e-19</spectral><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/I/343?format=ascii</footprint><waveband>Optical</waveband><waveband>Infrared</waveband></coverage><tableset><schema><name>default</name><table><name>I/343/gps1</name><description>Gaia-PS1-SDSS (GPS1) proper motion catalog, output (on a total of 345,274,875 sources)</description><column><name>chi2pmRAps</name><description>Reduced {Chi}^2^ for the Pan-STARRS 1-only fit of proper motion in RA</description><ucd>stat.fit.chi2;pos.pm;pos.eq.ra</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>chi2pmDEps</name><description>Reduced {Chi}^2^ for the Pan-STARRS 1-only fit of proper motion in DEC</description><ucd>stat.fit.chi2;pos.pm;pos.eq.dec</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>gmag</name><description>[-33/32]? g-band PSF magnitude from PAN-STARRS1/PS1 DR1 (4)</description><unit>mag</unit><ucd>phot.mag;em.opt.V</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag><flag>indexed</flag></column><column><name>RAICRS</name><description>Right ascension from fit (ICRS, Epoch 2010) (1)</description><unit>deg</unit><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DEICRS</name><description>Declination from fit (ICRS, Epoch 2010) (1)</description><unit>deg</unit><ucd>pos.eq.dec;meta.main</ucd></column><column><name>objid</name><description>Object identifier (not unique; this is not the Pan-STARRS1 identifier) (2)</description><ucd>meta.id;meta.main</ucd></column><column><name>e_RAICRS</name><description>[0.01/100]? 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