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<ri:Resource created="2013-09-16T10:36:12Z" status="active" updated="2026-03-17T20:07:23Z" 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>Sample of 467 GPS candidates</title><shortName>J/other/AstBu/68</shortName><identifier>ivo://CDS.VizieR/J/other/AstBu/68.262</identifier><altIdentifier>doi:10.26093/cds/vizier/dv/gikcgc</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Mingaliev M.G.</name></creator><creator><name>Sotnikova Yu.V.</name></creator><creator><name>Mufakharov T.V.</name></creator><creator><name>Erkenov A.K.,Udovitskiy R.Yu.</name></creator><date role="Updated">2026-03-17T20:07:23Z</date><date role="Created">2013-09-16T10:36:12Z</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>active-galactic-nuclei</subject><subject>radio-galaxies</subject><subject>radio-continuum-emission</subject><description>The results of a comprehensive analysis of continuous radio spectra of a sample of Gigahertz-Peaked Spectrum (GPS) sources are reported. The sources are selected from a flux-density-complete sample (S more or equal 200mJy at 4.8 or 5GHz) using multifrequency measurements of the RATAN-600 radio telescope and data from the CATS astrophysical catalogs support system. The analysis revealed a very small number (1-2%) of "classical" GPS objects, which is significantly less than the expected fraction of 10%. GPS galaxies are found to have narrower and steeper radio spectra than quasars. The low-frequency part of the spectrum is seen to become steeper with increasing redshift. Galaxies and quasars at the same z have comparable angular sizes, whereas their luminosities may differ by one order of magnitude. At large redshifts there is a deficit of objects with low (several GHz) peak frequencies. The number of GPS galaxies decreases sharply with redshift, and most of them are found at z between 0.01 and 1.81. GPS quasars are found at large redshifts, from 0.11 to 3.99. A quarter of the sample consists of blazars whose spectra may temporarily have a convex shape when the object is in active state.</description><source format="bibcode">2013AstBu..68..262M</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/AstBu/68.262</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/A+A/450/959">J/A+A/450/959 : VLBA images of High Frequency Peakers (Orienti+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/368/1411">J/MNRAS/368/1411 : Flat-spectrum symmetric radio sources (Augusto+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/495/691">J/A+A/495/691 : Multifrequency cat. of blazars, Roma-BZCAT (Massaro+, 2009)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/A+A/544/A25">J/A+A/544/A25 : GPS radio sources multifrequency study (Mingaliev+, 2012)</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/other/AstBu/68.262</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/AstBu/68.262</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/AstBu/68.262</mirrorURL></interface></capability><capability><interface xsi:type="vs:ParamHTTP"><accessURL 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Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>n_Name</name><description>[g*- ] Comments on GPS (5)</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType" arraysize="2*">char</dataType></column><column><name>Name</name><description>GPS source name (HHMMSS+DDMMSS, J2000)</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="13*">char</dataType></column><column><name>Type</name><description>[QG-] Source type (1)</description><ucd>src.class</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>z</name><description>? Redshift (1)</description><ucd>src.redshift</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>Fpeak</name><description>[0.01/41.2] Observed peak frequency</description><unit>GHz</unit><ucd>em.freq;stat.max</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>S5GHz</name><description>Radio flux density at 5GHz</description><unit>Jy</unit><ucd>phot.flux.density;em.radio.3-6GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>FWHM</name><description>Full width at half maximum of radio spectrum</description><ucd>spect.line.width</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Sp-</name><description>? Spectral index below peak frequency</description><ucd>spect.index</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_Sp-</name><description>? 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