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<ri:Resource created="2026-02-16T09:40:41Z" status="active" updated="2026-08-03T07:26:02Z" 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>Spatial distribution of GC systems in early-type gal.</title><shortName>J/ApJS/276/34</shortName><identifier>ivo://CDS.VizieR/J/ApJS/276/34</identifier><altIdentifier>doi:10.26093/cds/vizier/bb-8m-12</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Lim S.</name></creator><creator><name>Peng E.W.</name></creator><creator><name>Cote P.</name></creator><creator><name>Ferrarese L.</name></creator><creator><name>Roediger J.C.</name></creator><creator><name>Liu C.,Spengler C.</name></creator><creator><name>Sola E.</name></creator><creator><name>Duc P.-A.</name></creator><creator><name>Sales L.V.</name></creator><creator><name>Blakeslee J.P.,Cuillandre J.-C.</name></creator><creator><name>Durrell P.R.</name></creator><creator><name>Emsellem E.</name></creator><creator><name>Gwyn S.D.J.</name></creator><creator><name>Lancon A.,Marleau F.R.</name></creator><creator><name>Mihos J.C.</name></creator><creator><name>Muller O.</name></creator><creator><name>Puzia T.H.</name></creator><creator><name>Sanchez-Janssen R.</name></creator><date role="Updated">2026-08-03T07:26:02Z</date><date role="Created">2026-02-16T09:40:41Z</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>globular-star-clusters</subject><subject>galaxies</subject><subject>absolute-magnitude</subject><subject>two-color-diagrams</subject><subject>visible-astronomy</subject><subject>surveys</subject><description>We present an analysis of the spatial distribution of globular cluster (GC) systems of 118 nearby early-type galaxies in the Next Generation Virgo Cluster Survey and Mass Assembly of early-Type GaLAxies with their fine Structures survey programs, which both used MegaCam on the Canada-France-Hawaii Telescope. We describe the procedure used to select GC candidates and fit the spatial distributions of GCs to a two-dimensional Sersic function, which provides effective radii (half number radii) and Sersic indices, and estimate background contamination by adding a constant term to the Sersic function. In cases where a neighboring galaxy affects the estimation of the GC spatial distribution in the target galaxy, we fit two two-dimensional Sersic functions, simultaneously. We also investigate the color distributions of GCs in our sample by using Gaussian mixture modeling. For GC systems with bimodal color distributions, we divide the GCs into blue and red subgroups and fit their respective spatial distributions with Sersic functions. Finally, we measure the total number of GCs based on our fitted Sersic function, and calculate the GC specific frequency.</description><source format="bibcode">2025ApJS..276...34L</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/276/34</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/ApJ/591/850">J/ApJ/591/850 : Radial velocities of M49 globular clusters (Cote+, 2003)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/153/223">J/ApJS/153/223 : ACS Virgo Cluster Survey. I. 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