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<ri:Resource created="2012-08-21T12:43:49Z" 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>HII regions of M51 and NGC 4449</title><shortName>J/AJ/141/113</shortName><identifier>ivo://CDS.VizieR/J/AJ/141/113</identifier><altIdentifier>doi:10.26093/cds/vizier.51410113</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Gutierrez L.</name></creator><creator><name>Beckman J.E.</name></creator><creator><name>Buenrostro V.</name></creator><date role="Updated">2018-01-30T07:18:24Z</date><date role="Created">2012-08-21T12:43:49Z</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>galaxies</subject><subject>h-ii-regions</subject><subject>galaxy-classification-systems</subject><description>We have used images from the Advanced Camera for Surveys on the Hubble Space Telescope in H{alpha}, and in the neighboring continuum, to produce flux-calibrated images of the large spiral galaxy M51 and the dwarf irregular NGC 4449. 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