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<ri:Resource created="2016-01-28T14:45:14Z" 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>SDSS-RM project: z&lt;1 QSO host galaxies</title><shortName>J/ApJ/811/91</shortName><identifier>ivo://CDS.VizieR/J/ApJ/811/91</identifier><altIdentifier>doi:10.26093/cds/vizier.18110091</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Matsuoka Y.</name></creator><creator><name>Strauss M.A.</name></creator><creator><name>Shen Y.</name></creator><creator><name>Brandt W.N.</name></creator><creator><name>Greene J.E.</name></creator><creator><name>Ho L.C.,Schneider D.P.</name></creator><creator><name>Sun M.</name></creator><creator><name>Trump J.R.</name></creator><date role="Updated">2021-04-28T12:33:38Z</date><date role="Created">2016-01-28T14:45:14Z</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>quasars</subject><subject>redshifted</subject><subject>spectroscopy</subject><subject>galaxy-kinematics</subject><subject>surveys</subject><description>Quasar host galaxies are key for understanding the relation between galaxies and the supermassive black holes (SMBHs) at their centers. We present a study of 191 broad-line quasars and their host galaxies at z&lt;1 using high signal-to-noise ratio (S/N) spectra produced by the Sloan Digital Sky Survey Reverberation Mapping project. Clear detection of stellar absorption lines allows a reliable decomposition of the observed spectra into nuclear and host components, using spectral models of quasar and stellar radiations as well as emission lines from the interstellar medium. We estimate age, mass M*, and velocity dispersion {sigma}* of the host stars, the star formation rate (SFR), quasar luminosity, and SMBH mass M_{dot}_ for each object. The quasars are preferentially hosted by massive galaxies with M*~10^11^M_{sun}_ characterized by stellar ages around 1 billion yr, which coincides with the transition phase of normal galaxies from the blue cloud to the red sequence. The host galaxies have relatively low SFRs and fall below the main sequence of star-forming galaxies at similar redshifts. These facts suggest that the hosts have experienced an episode of major star formation sometime in the past 1 billion yr, which was subsequently quenched or suppressed. The derived M_{dot}_-{sigma}* and M_{dot}_-M* relations agree with our past measurements and are consistent with no evolution from the local universe. The present analysis demonstrates that reliable measurements of stellar properties of quasar host galaxies are possible with high-S/N fiber spectra, which will be acquired in large numbers with future powerful instruments such as the Subaru Prime Focus Spectrograph.</description><source format="bibcode">2015ApJ...811...91M</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/811/91</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/805/96">J/ApJ/805/96 : SDSS-RM project: velocity dispersions of QSOs (Shen+, 2015)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/149/203">J/AJ/149/203 : Reddening of ~35000 quasars from SDSS (Krawczyk+, 2015)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/216/4">J/ApJS/216/4 : SDSS-RM project: technical overview (Shen+, 2015)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/208/24">J/ApJS/208/24 : Spitzer MIR AGN survey. 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(Lacy+, 2013)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/430/60">J/MNRAS/430/60 : Suzaku view of highly ionized outflows in AGN (Gofford+, 2013)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/763/133">J/ApJ/763/133 : Broad-line AGN with host galaxy colors (Trump+, 2013)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/757/51">J/ApJ/757/51 : FIRST-2MASS dust-reddened QSO spectra (Glikman+, 2012)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/753/125">J/ApJ/753/125 : NIR spectroscopy follow-up of 60 SDSS-DR7 QSOs (Shen+, 2012)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/533/A119">J/A+A/533/A119 : GOODS-Herschel North and South catalogs (Elbaz+, 2011)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/194/45">J/ApJS/194/45 : QSO properties from SDSS-DR7 (Shen+, 2011)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/720/368">J/ApJ/720/368 : Color-magnitude relations of galaxies in CDFs (Xue+, 2010)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/711/284">J/ApJ/711/284 : Galaxy Zoo: AGN host galaxies (Schawinski+, 2010)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/136/2373">J/AJ/136/2373 : Type 2 quasars from SDSS (Reyes+, 2008)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/665/990">J/ApJ/665/990 : SDSS DR2 BAL QSOs (Ganguly+, 2007)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/165/1">J/ApJS/165/1 : BAL QSOs from SDSS DR3 (Trump+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/131/2766">J/AJ/131/2766 : Quasar luminosity function from SDSS-DR3 (Richards+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/131/84">J/AJ/131/84 : AGNs and host galaxies information (Vanden Berk+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/126/2125">J/AJ/126/2125 : SDSS candidate type II quasars (Zakamska+, 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