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<ri:Resource created="2009-11-19T07:00:21Z" 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>MK classifications of spectroscopic binaries</title><shortName>J/ApJS/180/117</shortName><identifier>ivo://CDS.VizieR/J/ApJS/180/117</identifier><altIdentifier>doi:10.26093/cds/vizier.21800117</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Abt H.A.</name></creator><date role="Updated">2017-09-29T09:03:32Z</date><date role="Created">2009-11-19T07:00:21Z</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>spectroscopic-binary-stars</subject><subject>morgan-keenan-classification</subject><subject>spectroscopy</subject><description>New MK spectral classifications are given for 145 spectroscopic binaries (SBs) with A-F primaries because two-dimensional types are lacking for more than one-third of the A-F SBs with known orbital elements in the current catalog. Compared with the classifications by Morgan, Keenan, and their students, the new classifications give types that are 1.1+/-0.2 subclasses later and 0.7+/-0.1 luminosity classes fainter. Also listed are selected published MK types from Brian Skiff's recent compilation (Cat. &lt;B/mk&gt;).</description><source format="bibcode">2009ApJS..180..117A</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/180/117</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/mk">B/mk : Catalogue of Stellar Spectral Classifications (Skiff, 2009)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/B/sb9">B/sb9 : SB9: 9th Catalogue of Spectroscopic Binary Orbits</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/III/190">III/190 : WEB Catalog of Radial Velocities (Duflot+ 1995)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/III/135">III/135 : Henry Draper Catalogue and Extension (Cannon+ 1918-1924;</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/III/117">III/117 : MK Classifications of Close Visual Binaries (Corbally, 1984)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/176/216">J/ApJS/176/216 : MK spectral types of Visual Multiples (Abt, 2008)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/155/175">J/ApJS/155/175 : MK Classification of Bright Star Supplement (Abt, 2004)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/143/513">J/ApJS/143/513 : Spectral classification of close binaries (Ginestet+, 2002)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/121/2148">J/AJ/121/2148 : Precise spectral types for 372 A, F + G stars (Gray+, 2001)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/119/83">J/ApJS/119/83 : IUE sample of binaries with hot component (Parsons+, 1998)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/99/135">J/ApJS/99/135 : A-type stars rotation and spectral peculiarities (Abt+ 1995)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/59/95">J/ApJS/59/95 : Visual multiples. 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(Abt+, 1985)</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/ApJS/180/117</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/180/117</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/180/117</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/180/117</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/180/117</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/180/117</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/ApJS/180/117/table1 (MK spectral classifications of SB9 stars)</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/180/117/table1?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/180/117/table1?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/180/117/table1?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>2.0969108</ra><dec>29.0904319</dec><sr>0.005555555555555556</sr></testQuery></capability><coverage><spatial>6/254 456 463 474 475 565 863 1016 1163 1453 1779 1791 1922 2062 2076 2127 2133 2381 2472 3036 3053 3208 3279 3783 4184 4227 4933 5343 5476 5731 5777 5802 6024 6068 6123 6147 7075 7238 7390 7444 8109 8705 8716 8935 9247 9322 10045 10164 10181 10263 10305 10343 10474 10481 10560 11275 11302 11534 11620 11636 11657 11770 12266 12372 12760 12784 12798 13181 13346 13573 13935 13947 13966 14034 14173 14431 14440 14599 14616 14713 14924 15232 15288 15301 15606 15669 15770 15803 16145 16226 17611 17860 17965 18803 19022 19215 19507 19766 20198 20303 20322 21536 21790 22625 23523 23527 23658 24256 24420 24932 25074 25198 25919 26753 27352 27822 28136 28480 28503 28643 29836 30363 30558 30703 30798 30995 31613 31781 31838 31984 32001 32070 32074 36446 36711 36742 44411 44720 44872 44879 48874</spatial><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/180/117?format=ascii</footprint><waveband>Optical</waveband></coverage><tableset><schema><name>default</name><table><name>J/ApJS/180/117/table1</name><description>MK spectral classifications of SB9 stars</description><column><name>recno</name><description>Record number assigned by the VizieR team. 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