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<ri:Resource created="2023-06-16T12:57:56Z" status="active" updated="2026-05-22T20:02:29Z" 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 DR3. Cross-match with known variable objects</title><shortName>J/A+A/674/A22</shortName><identifier>ivo://CDS.VizieR/J/A+A/674/A22</identifier><altIdentifier>doi:10.26093/cds/vizier.36740022</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Gavras P.</name></creator><creator><name>Rimoldini L.</name></creator><creator><name>Nienartowicz K.</name></creator><creator><name>Jevardat de Fombelle G.</name></creator><creator><name>Holl B.,Abraham P.</name></creator><creator><name>Audard M.</name></creator><creator><name>Carnerero M.</name></creator><creator><name>Clementini G.</name></creator><creator><name>De Ridder J.,Distefano E.</name></creator><creator><name>Garcia-Lario P.</name></creator><creator><name>Garofalo A.</name></creator><creator><name>Kospal A.</name></creator><creator><name>Kruszynska K.,Kun M.</name></creator><creator><name>Lecoeur-Taibi I.</name></creator><creator><name>Marton G.</name></creator><creator><name>Mazeh T.</name></creator><creator><name>Mowlavi N.</name></creator><creator><name>Raiteri C.M.,Ripepi V.</name></creator><creator><name>Szabados L.</name></creator><creator><name>Zucker S.</name></creator><creator><name>Eyer L.</name></creator><date role="Updated">2026-05-22T20:02:29Z</date><date role="Created">2023-06-16T12:57:56Z</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>surveys</subject><subject>variable-stars</subject><subject>proper-motions</subject><subject>visible-astronomy</subject><subject>photographic-photometry</subject><subject>astronomical-object-identification</subject><subject>galaxies</subject><subject>catalogs</subject><description>In current astronomical surveys with ever-increasing data volumes, automated methods are essential. Objects of known classes from the literature are necessary to train supervised machine-learning algorithms and to verify and validate their results. The primary goal of this work is to provide a comprehensive data set of known variable objects from the literature that we cross-match with Gaia DR3 sources, including a large number of variability types and representatives, in order to cover sky regions and magnitude ranges relevant to each class in the best way. In addition, non-variable objects from selected surveys are targeted to probe their variability in Gaia and possible use as standards. This data set can be the base for a training set that can be applied to variability detection, classification, and validation A statistical method that employed astrometry (position and proper motion) and photometry (mean magnitude) was applied to selected literature catalogues in order to identify the correct counterparts of known objects in the Gaia data. The cross-match strategy was adapted to the properties of each catalogue, and the verification of results excluded dubious matches. Our catalogue gathers 7841723 Gaia sources, 1.2 million of which are non-variable objects and 1.7 million are galaxies, in addition to 4.9 million variable sources. This represents over 100 variability (sub)types. This data set served the requirements of the Gaia variability pipeline for its third data release (DR3) from classifier training to result validation, and it is expected to be a useful resource for the scientific community that is interested in the analysis of variability in the Gaia data and other surveys.</description><source format="bibcode">2023A&amp;A...674A..22G</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/674/A22</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/I/355">I/355 : Gaia DR3 Part 1. 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