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<ri:Resource created="2011-03-14T12:23:06Z" 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>Blue early-type galaxies in Galaxy Zoo</title><shortName>J/MNRAS/396/818</shortName><identifier>ivo://CDS.VizieR/J/MNRAS/396/818</identifier><altIdentifier>doi:10.26093/cds/vizier.73960818</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Schawinski K.</name></creator><creator><name>Lintott C.</name></creator><creator><name>Thomas D.</name></creator><creator><name>Sarzi M.</name></creator><creator><name>Andreescu D.</name></creator><creator><name>Bamford S.P.,Kaviraj S.</name></creator><creator><name>Khochfar S.</name></creator><creator><name>Land K.</name></creator><creator><name>Murray P.</name></creator><creator><name>Nichol R.C.</name></creator><creator><name>Raddick M.J.,Slosar A.</name></creator><creator><name>Szalay A.</name></creator><creator><name>Vandenberg J.</name></creator><creator><name>Yi S.K.</name></creator><date role="Updated">2024-07-09T20:15:20Z</date><date role="Created">2011-03-14T12:23:06Z</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>surveys</subject><subject>galaxies</subject><subject>photometry</subject><subject>visible-astronomy</subject><subject>sloan-photometry</subject><description>We report the discovery of a population of nearby, blue early-type galaxies with high star formation rates (0.5&lt;SFR&lt;50M_{sun}_/yr). They are identified by their visual morphology as provided by Galaxy Zoo for Sloan Digital Sky Survey Data Release 6 and their u-r colour. We select a volume-limited sample in the redshift range 0.02&lt;z&lt;0.05, corresponding to luminosities of approximately L* and above and with u-r colours significantly bluer than the red sequence. We confirm the early-type morphology of the objects in this sample and investigate their environmental dependence and star formation properties.</description><source format="bibcode">2009MNRAS.396..818S</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/396/818</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/II/294">II/294 : SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/VII/260">VII/260 : SDSS-DR7 quasar catalog (Schneider+, 2010)</relatedResource><relatedResource 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