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<ri:Resource created="2012-10-20T14:56:17Z" status="active" updated="2025-05-19T09:50:00Z" version="1.2" 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/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>Main sequence intrinsic colours: O8V to M0V</title><shortName>J/MNRAS/418/2219</shortName><identifier>ivo://CDS.VizieR/J/MNRAS/418/2219</identifier><altIdentifier>doi:10.26093/cds/vizier.74182219</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Stead J.J.</name></creator><creator><name>Hoare M.G.</name></creator><date role="Updated">2024-07-16T20:12:04Z</date><date role="Created">2012-10-20T14:56:17Z</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>photometric-standard-stars</subject><subject>morgan-keenan-classification</subject><description>A new Monte Carlo method has been developed in order to derive ages of young embedded clusters in massive star-forming regions where there is strong differential reddening. After foreground and infrared excess source candidates are removed, each cluster candidate star is individually dereddened. Simulated clusters are constructed using isochrones, an initial mass function, realistic photometric errors, simulated background field populations and extinction distributions. These synthetic clusters are then dereddened in the same way as the real data, obtained from a deep near-infrared survey, and used to derive the ages of three embedded clusters. Results were found to be consistent with those determined using spectrophotometric methods. This new method provides way to determine the ages of embedded clusters when only photometric data are available and there is strong differential reddening.</description><source format="bibcode">2011MNRAS.418.2219S</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/418/2219</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</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/MNRAS/418/2219</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/418/2219</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/418/2219</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/418/2219</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/418/2219</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/418/2219</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><coverage><footprint ivo-id="ivo://ivoa.net/std/moc"/><waveband>Optical</waveband></coverage><tableset><schema><name>default</name><table><name>J/MNRAS/418/2219/tablea1</name><description>Main sequence intrinsic colours: O8V to M0V</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>SpType</name><description>MK spectral type (O8V to M0V)</description><ucd>src.spType</ucd><dataType xsi:type="vs:VOTableType" arraysize="3*">char</dataType></column><column><name>Ns</name><description>Number of stars per subtype</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>H-K</name><description>UKIDSS H-K colour index</description><unit>mag</unit><ucd>phot.color;em.IR.H;em.IR.K</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>J-H</name><description>UKIDSS J-H colour index</description><unit>mag</unit><ucd>phot.color;em.IR.J;em.IR.H</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>H-K2</name><description>2MASS H-K colour index</description><unit>mag</unit><ucd>phot.color;em.IR.H;em.IR.K</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>J-H2</name><description>2MASS J-H colour index</description><unit>mag</unit><ucd>phot.color;em.IR.J;em.IR.H</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_H-K</name><description>rms uncertainty on H-K</description><unit>mag</unit><ucd>stat.error;phot.color;em.IR.H</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>e_J-H</name><description>rms uncertainty on J-H</description><unit>mag</unit><ucd>stat.error;phot.color;em.IR.J</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column></table></schema></tableset></ri:Resource>