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<ri:Resource created="2015-06-10T07:06:37Z" 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>Galactic CHaMP. II. Dense gas clumps.</title><shortName>J/ApJ/779/79</shortName><identifier>ivo://CDS.VizieR/J/ApJ/779/79</identifier><altIdentifier>doi:10.26093/cds/vizier.17790079</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Ma B.</name></creator><creator><name>Tan J.C.</name></creator><creator><name>Barnes P.J.</name></creator><date role="Updated">2019-12-03T10:57:24Z</date><date role="Created">2015-06-10T07:06:37Z</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>millimeter-astronomy</subject><subject>submillimeter-astronomy</subject><subject>surveys</subject><subject>galaxy-kinematics</subject><description>The Census of High- and Medium-mass Protostars (CHaMP) is the first large-scale (280{deg}&lt;l&lt;300{deg}, -4{deg}&lt;b&lt;2{deg}), unbiased, subparsec resolution survey of Galactic molecular clumps and their embedded stars. Barnes et al. (Paper I, 2011, J/ApJS/196/12) presented the source catalog of ~300 clumps based on HCO^+^(1-0) emission, used to estimate masses M. Here we use archival midinfrared-to-millimeter continuum data to construct spectral energy distributions. Fitting two-temperature gray-body models, we derive bolometric luminosities, L. We find that the clumps have 10&lt;~L/L_{sun}_&lt;~10^6.5^ and 0.1&lt;~L/M/[L_{sun}_/M_{sun}_]&lt;~10^3^, consistent with a clump population spanning a range of instantaneous star-formation efficiencies from 0 to ~50%. We thus expect L/M to be a useful, strongly varying indicator of clump evolution during the star cluster formation process.</description><source format="bibcode">2013ApJ...779...79M</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/779/79</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/V/98">V/98 : MSX Infrared Astrometric Catalog (Egan+ 1996)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/196/12">J/ApJS/196/12 : Paper I. 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