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<ri:Resource created="2014-10-24T09:14:08Z" 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>IR spectra and photometry of z&lt;0.5 quasars</title><shortName>J/ApJS/214/23</shortName><identifier>ivo://CDS.VizieR/J/ApJS/214/23</identifier><altIdentifier>doi:10.26093/cds/vizier.22140023</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Shi Y.</name></creator><creator><name>Rieke G.H.</name></creator><creator><name>Ogle P.M.</name></creator><creator><name>Su K.Y.L.</name></creator><creator><name>Balog Z.</name></creator><date role="Updated">2017-07-12T15:16:25Z</date><date role="Created">2014-10-24T09:14:08Z</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>infrared-photometry</subject><subject>infrared-astronomy</subject><subject>spectroscopy</subject><subject>redshifted</subject><subject>line-intensities</subject><description>As a step toward a comprehensive overview of the infrared (IR) diagnostics of the central engines and host galaxies of quasars at low redshift, we present Spitzer Space Telescope spectroscopic (5-40{mu}m) and photometric (24, 70, and 160{mu}m) measurements of all Palomar-Green (PG) quasars at z&lt;0.5 and Two Micron All Sky Survey (2MASS) quasars at z&lt;0.3. We supplement these data with Herschel measurements at 160{mu}m. The sample is composed of 87 optically selected PG quasars and 52 near-IR-selected 2MASS quasars. Here we present the data, measure the prominent spectral features, and separate emission due to star formation from that emitted by the dusty circumnuclear torus. We find that the mid-IR (5-30{mu}m) spectral shape for the torus is largely independent of quasar IR luminosity with scatter in the spectral energy distribution (SED) shape of &lt;~0.2dex. Except for the silicate features, no large difference is observed between PG (unobscured --silicate emission) and 2MASS (obscured --silicate absorption) quasars. Only mild silicate features are observed in both cases. When in emission, the peak wavelength of the silicate feature tends to be longer than 9.7{mu}m, possibly indicating effects on grain properties near the active galactic nucleus. The IR color is shown to correlate with the equivalent width of the aromatic features, indicating that the slope of the quasar mid- to far-IR SED is to first order driven by the fraction of radiation from star formation in the IR bands.</description><source format="bibcode">2014ApJS..214...23S</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/214/23</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/246">II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/II/241">II/241 : 2MASS 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ivo-id="ivo://CDS.VizieR/J/ApJ/692/556">J/ApJ/692/556 : Star forming galaxy templates (Rieke+, 2009)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/666/806">J/ApJ/666/806 : SED of Spitzer quasars (QUEST) (Netzer+, 2007)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/656/770">J/ApJ/656/770 : Mid-IR spectrum of star-forming galaxies (Smith+, 2007)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/382/412">J/MNRAS/382/412 : Catalog of SDSS-DR5/2MASS spectroscopic quasars (Ofek, 2007)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/653/127">J/ApJ/653/127 : 9.7um silicate features in AGNs (Shi+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/166/470">J/ApJS/166/470 : SDSS-Spitzer type I QSOs IR photometry (Richards+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/130/873">J/AJ/130/873 : BQS objects in the SDSS DR3 area (Jester+, 2005)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/625/78">J/ApJ/625/78 : QSOs properties (Hao+, 2005)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJ/569/23">J/ApJ/569/23 : Optical polarisation of 2MASS QSOs (Smith+, 2002)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/95/1">J/ApJS/95/1 : Atlas of Quasar Energy Distributions (Elvis+ 1994)</relatedResource></relationship></content><rights>https://cds.unistra.fr/vizier-org/licences_vizier.html</rights><capability><interface xsi:type="vr:WebBrowser"><accessURL use="full">https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/214/23</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/214/23</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/214/23</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL 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