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<ri:Resource created="2005-06-19T22:09:31Z" 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>NGC 2264: VRIH{alpha} photometry</title><shortName>J/AJ/128/1684</shortName><identifier>ivo://CDS.VizieR/J/AJ/128/1684</identifier><altIdentifier>doi:10.26093/cds/vizier.51281684</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Sung H.</name></creator><creator><name>Bessell M.S.</name></creator><creator><name>Chun M.-Y.</name></creator><date role="Updated">2005-06-19T22:09:42Z</date><date role="Created">2005-06-19T22:09:31Z</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>open-star-clusters</subject><subject>pre-main-sequence-stars</subject><subject>infrared-photometry</subject><subject>visible-astronomy</subject><subject>photometry</subject><subject>x-ray-sources</subject><subject>ccd-photometry</subject><description>The young open cluster NGC 2264 was observed on 2002 January 67 with the CFH12K mosaic CCD on the 3.6m Canada-France-Hawaii Telescope to investigate the shape of the initial mass function (IMF). In order to select the pre-main-sequence (PMS) members more completely, Chandra X-Ray Observatory archival data were retrieved and used for the identification of X-ray-emitting weak-line T Tauri stars. In addition, the (R-I, V-I) diagram was used to exclude background late-type giants, and a statistical approach was applied to estimate the number of contaminating foreground main-sequence stars.</description><source format="bibcode">2004AJ....128.1684S</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/128/1684</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/AJ/127/2659">J/AJ/127/2659 : CHANDRA observations of NGC 2264 (Ramirez+, 2004)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/345/521">J/A+A/345/521 : BVRI photometry of NGC 2264 (Flaccomio+, 1999)</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/AJ/128/1684</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/128/1684</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/128/1684</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/128/1684</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/128/1684</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/128/1684</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/AJ/128/1684/table1 (Photometric data)</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/128/1684/table1?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/128/1684/table1?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/128/1684/table1?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>100.0249167</ra><dec>9.9467778</dec><sr>0.005555555555555556</sr></testQuery></capability><capability xsi:type="cs:ConeSearch" standardID="ivo://ivoa.net/std/ConeSearch"><description>Cone search capability for table J/AJ/128/1684/table3 (X-Ray sources detected from pwdetect)</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/128/1684/table3?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/128/1684/table3?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/128/1684/table3?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>100.0888333</ra><dec>9.735</dec><sr>0.005555555555555556</sr></testQuery></capability><coverage><spatial>6/23637 23639</spatial><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/128/1684?format=ascii</footprint><waveband>X-ray</waveband><waveband>Optical</waveband><waveband>Infrared</waveband></coverage><tableset><schema><name>default</name><table><name>J/AJ/128/1684/table1</name><description>Photometric data</description><column><name>recno</name><description>Record number assigned by the VizieR team. 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The (V-I) colour index</description><unit>mag</unit><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_V-I</name><description>? The error in V-I in millimagnitudes</description><unit>mag</unit><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>f_V-I</name><description>[*] Indicates error greater than 0.1mag</description><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>R-Ha</name><description>? The (R-H{alpha}) colour index</description><unit>mag</unit><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_R-Ha</name><description>? The error in R-Ha in millimagnitudes</description><unit>mag</unit><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>f_R-Ha</name><description>[*] Indicates error greater than 0.1mag</description><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>o_Imag</name><description>? Number of observations in Imag</description><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>o_R-I</name><description>? Number of observations in R-I</description><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>o_V-I</name><description>? Number of observations in V-I</description><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>o_R-Ha</name><description>? 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