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<ri:Resource created="2012-11-13T10:20:49Z" 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>H{alpha}-emission stars</title><shortName>J/A+AS/44/387</shortName><identifier>ivo://CDS.VizieR/J/A+AS/44/387</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>MacConnell D.J.</name></creator><date role="Updated">2018-01-02T13:42:38Z</date><date role="Created">2012-11-13T10:20:49Z</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>emission-line-stars</subject><description>The catalog includes 731 early-type stars (non-banded spectra) and 34 late-type stars (banded spectra) showing H{alpha} in emission which were not previously known as emission-line stars. Description (by B. Skiff): This is a rough working list of accurate coordinates for MacConnell's 1981 list of H-{alpha} emission objects. The original catalog is made of 2 tables: table I with the early-type stars, and table II with the late-type stars. A few objects were not recoverable, either due to gross position errors or simply from plate flaws or something similar. Many cases were verified using the SuperCOSMOS H-{alpha} emission survey images. MacConnell's magnitudes are replaced with much better V data mainly from ASAS-3. The original magnitudes have a scale error at the faint end (the faintest "11.9" stars are typically mag 13 to 14), and are generally rather scattered.</description><source format="bibcode">1981A&amp;AS...44..387M</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/44/387</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/III/180">III/180 : SS(77) Catalogue: new H-alpha em* in Milky Way (Stephenson+ 1977)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/III/205">III/205 : H-alpha Stars in Northern Milky Way (Kohoutek+ 1997)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/402/963">J/A+A/402/963 : Stephenson H{alpha} stars (Maheswar+, 2003)</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/A+AS/44/387</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/44/387</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/44/387</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/44/387</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/44/387</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South 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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>Tbl</name><description>[I ] Table number (I or II)</description><ucd>meta.id;meta.main</ucd><flag>nullable</flag></column><column><name>No</name><description>[1/737] Star number in table</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>RAJ2000</name><description>Right Ascension J2000</description><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DEJ2000</name><description>Declination J2000</description><ucd>pos.eq.dec;meta.main</ucd></column><column><name>s</name><description>[UTMgs?] Source of position (1)</description><ucd>meta.ref;pos.frame</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>Vmag</name><description>? 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