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<ri:Resource created="2010-06-16T19:04:32Z" 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>Early-type binaries on main sequence</title><shortName>J/MNRAS/401/257</shortName><identifier>ivo://CDS.VizieR/J/MNRAS/401/257</identifier><altIdentifier>doi:10.26093/cds/vizier.74010257</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Khaliullin K.F.</name></creator><creator><name>Khaliullina A.I.</name></creator><date role="Updated">2024-07-10T20:17:01Z</date><date role="Created">2010-06-16T19:04:32Z</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>multiple-stars</subject><subject>photometry</subject><subject>galaxy-classification-systems</subject><subject>stellar-masses</subject><description>We showed in a preceding paper based on an analysis of the observed rates of apsidal motion that synchronization in early-type eclipsing binaries continues on the main sequence, and the observed synchronization times, t_syn_, agree with the Zahn's theory (1977A&amp;A....57..383Z) and are inconsistent with the shorter time-scale proposed by Tassoul (1987ApJ...322..856T, 1988ApJ...324L..71T). It follows from this that circularization in early-type binaries must also proceed in accordance with the Zahn's theory because the circularization times, t_circ_, in both theories are rather tightly related to tsyn via relation t_circ_~{alpha}t_syn_, where {alpha} is the orbital-to-axial momentum ratio.</description><source format="bibcode">2010MNRAS.401..257K</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/401/257</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/J/A+A/424/919">J/A+A/424/919 : Stellar models grids. 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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>GCVS name</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="10*">char</dataType></column><column><name>SB9</name><description>? Star number in the SB9 catalogue</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>Per</name><description>Orbital period</description><unit>d</unit><ucd>time.period</ucd><dataType xsi:type="vs:VOTableType">double</dataType></column><column><name>r1</name><description>Fractional radii of the first component in terms of the semimajor axis a of the relative orbit</description><ucd>phys.size.radius;arith.ratio</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>r2</name><description>Fractional radii of the second component in terms of the semimajor axis a of the relative orbit</description><ucd>phys.size.radius;arith.ratio</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>i</name><description>Inclination of the orbit</description><unit>deg</unit><ucd>src.orbital.inclination</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e</name><description>Eccentricity of the orbit as inferred from the light-curve solution</description><ucd>src.orbital.eccentricity</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>M1v</name><description>? 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Outside-eclipse Johnson visual colour index U-B</description><unit>mag</unit><ucd>phot.color;em.opt.U;em.opt.B</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>m1</name><description>? Outside-eclipse Stroemgren colour index m1</description><unit>mag</unit><ucd>phot.color</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>c1</name><description>? Outside-eclipse Stroemgren colour index c1</description><unit>mag</unit><ucd>phot.color</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>b-y</name><description>? Outside-eclipse visual colour index b-y</description><unit>mag</unit><ucd>phot.color;em.opt.B;em.opt.V</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>Jmag</name><description>? 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