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<ri:Resource created="2021-08-02T13:20:50Z" status="active" updated="2025-06-13T15:25:00Z" 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>Compilation of W UMa stars</title><shortName>J/ApJS/254/10</shortName><identifier>ivo://CDS.VizieR/J/ApJS/254/10</identifier><altIdentifier>doi:10.26093/cds/vizier.22540010</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Latkovic O.</name></creator><creator><name>Ceki A.</name></creator><creator><name>Lazarevic S.</name></creator><date role="Updated">2022-07-07T17:48:48Z</date><date role="Created">2021-08-02T13:20:50Z</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>astronomical-reference-materials</subject><subject>stellar-masses</subject><subject>stellar-distance</subject><subject>stellar-ages</subject><description>We present a statistical study of the largest bibliographic compilation of stellar and orbital parameters of W UMa stars derived by light-curve synthesis with Roche models. The compilation includes nearly 700 individually investigated objects from over 450 distinct publications. Almost 70% of this sample is comprised of stars observed in the past decade that have not been considered in previous statistical studies. We estimate the ages of the cataloged stars, model the distributions of their periods, mass ratios, temperatures, and other quantities, and compare them with the data from the Catalina Real-Time Transient Survey, LAMOST, and Gaia archives. As only a small fraction of the sample has radial-velocity curves, we examine the reliability of the photometric mass ratios in totally and partially eclipsing systems and find that totally eclipsing W UMa stars with photometric mass ratios have the same parameter distributions as those with spectroscopic mass ratios. Most of the stars with reliable parameters have mass ratios below 0.5 and orbital periods shorter than 0.5 days. Stars with longer periods and temperatures above 7000K stand out as outliers and should not be labeled W UMa binaries.</description><source format="bibcode">2021ApJS..254...10L</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/254/10</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/B/vsx">B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/B/gcvs">B/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/V/119">V/119 : Catalogue of field contact binary stars (Pribulla+, 2003)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/I/345">I/345 : Gaia DR2 (Gaia Collaboration, 2018)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/V/153">V/153 : LAMOST DR4 catalogs (Luo+, 2018)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/311/523">J/A+A/311/523 : Photometry of W UMa (Maceroni+, 1996)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/426/1001">J/A+A/426/1001 : Catalog of contact binary stars (Csizmadia+, 2004)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/357/497">J/MNRAS/357/497 : Kinematics of W UMa-type binaries (Bilir+, 2005)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/629/1055">J/ApJ/629/1055 : Evolution of close binary systems (Yakut+, 2005)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/373/1483">J/MNRAS/373/1483 : W UMa type and CAB stars dynamical evolution (Eker+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AcA/56/253">J/AcA/56/253 : Period changes of OGLE contact binaries (Kubiak+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/131/2986">J/AJ/131/2986 : Multiplicity of contact binaries (Pribulla+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/696/870">J/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/412/1787">J/MNRAS/412/1787 : Physical parameters of 62 eclipsing binaries (Deb+, 2011)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/141/83">J/AJ/141/83 : Kepler Mission. I. Eclipsing binaries in DR1 (Prsa+, 2011)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/143/99">J/AJ/143/99 : Photometry of W UMa eclipsing binaries (Terrell+, 2012)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/146/70">J/AJ/146/70 : Spectroscopy of W UMa-type binary stars (Rucinski+, 2013)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/430/2029">J/MNRAS/430/2029 : Initial masses of W UMa type contact bin. (Yildiz+, 2013)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/148/126">J/AJ/148/126 : Light curves of four overcontact binaries (Caliskan+, 2014)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/437/185">J/MNRAS/437/185 : W UMa-type contact binaries ages and masses (Yildiz, 2014)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/149/49">J/AJ/149/49 : Radial velocities of AW UMa (Rucinski+, 2015)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/465/4678">J/MNRAS/465/4678 : 9380 contact binaries from CRTS VSC (Marsh+, 2017)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/other/RMxAA/53.235">J/other/RMxAA/53.235 : Photometry of 6 deep-contact W UMa (Kjurkchieva+, 2017)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/859/140">J/ApJ/859/140 : Multi-band magnitudes for W UMa EB* candidates (Chen+, 2018)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/158/186">J/AJ/158/186 : Phot. of 12 eclipsing W UMa stars (Kjurkchieva+, 2019)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/160/104">J/AJ/160/104 : eps. 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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>Name</name><description>The name or identifier of the star</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="29*">char</dataType></column><column><name>Bibcode</name><description>ADS bibcode for the main source publication</description><ucd>meta.bib.bibcode</ucd><dataType xsi:type="vs:VOTableType" arraysize="19*">char</dataType></column><column><name>Type</name><description>Binnendijk type ("A" or "W")</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>ET</name><description>[0/1] The eclipse type: 1 for total, 0 for partial eclipse</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Per</name><description>[0.17/1.15] The orbital period of the binary</description><unit>d</unit><ucd>time.period</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>dPdt</name><description>[-1.53/0.71]? The increase or decrease of the orbital period</description><unit>s/yr</unit><ucd>arith.rate;time.period</ucd><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>Pc</name><description>[1.7/139]? The period of cyclical change of the orbital period</description><unit>yr</unit><ucd>arith.rate;time.period</ucd><dataType xsi:type="vs:VOTableType">double</dataType><flag>nullable</flag></column><column><name>BibcodeP</name><description>The ADS bibcode for the period study publication</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="19*">char</dataType></column><column><name>Solver</name><description>The software used to obtain the light curve solution (1)</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType" arraysize="12*">char</dataType></column><column><name>q</name><description>[0.04/1] The mass ratio, q=M2/M1&lt;1</description><ucd>phys.mass</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>QT</name><description>Mass ratio type: spectroscopic ("SP") or photometric ("PH")</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType" arraysize="2*">char</dataType></column><column><name>i</name><description>[13.4/98.1] The orbital inclination of the binary</description><unit>deg</unit><ucd>src.orbital.inclination</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>a</name><description>[0.9/6.2]? 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Primary luminosity</description><unit>solLum</unit><ucd>phys.luminosity</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>L2</name><description>[0.02/11.3]? Secondary luminosity</description><unit>solLum</unit><ucd>phys.luminosity</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>L3</name><description>[0/1] Detection of uneclipsed (third) light (1 if detected, 0 otherwise)</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Dist</name><description>[5.8/2605]? The estimated distance of the binary</description><unit>pc</unit><ucd>pos.distance;pos.heliocentric</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>Age</name><description>[0.5/13.6]? 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