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<ri:Resource created="2013-12-18T10:10:27Z" 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>QCAL-1 43 GHz Calibrator Survey</title><shortName>J/AJ/144/150</shortName><identifier>ivo://CDS.VizieR/J/AJ/144/150</identifier><altIdentifier>doi:10.26093/cds/vizier.51440150</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Petrov L.</name></creator><creator><name>Lee S.-S.</name></creator><creator><name>Kim J.</name></creator><creator><name>Jung T.</name></creator><creator><name>Oh J.</name></creator><creator><name>Sohn B.W.</name></creator><creator><name>Byun D.-Y.,Chung M.-H.</name></creator><creator><name>Je D.-H.</name></creator><creator><name>Wi S.-O.</name></creator><creator><name>Song M.-G.</name></creator><creator><name>Kang J.</name></creator><creator><name>Han S.-T.</name></creator><creator><name>Lee J.-W.,Kim B.G.</name></creator><creator><name>Chung H.</name></creator><creator><name>Kim H.-G.</name></creator><date role="Updated">2017-09-29T09:03:19Z</date><date role="Created">2013-12-18T10:10:27Z</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>very-long-baseline-interferometry</subject><subject>radio-sources</subject><subject>surveys</subject><subject>interferometry</subject><description>This paper presents the catalog of correlated flux densities in three ranges of baseline projection lengths of 637 sources from a 43GHz (Q band) survey observed with the Korean VLBI Network. Of them, 14 objects used as calibrators were previously observed, but 623 sources have not been observed before in the Q band with very long baseline interferometry (VLBI). The goal of this work in the early science phase of the new VLBI array is twofold: to evaluate the performance of the new instrument that operates in a frequency range of 22-129GHz and to build a list of objects that can be used as targets and as calibrators. We have observed the list of 799 target sources with declinations down to -40{deg}. Among them, 724 were observed before with VLBI at 22GHz and had correlated flux densities greater than 200mJy. The overall detection rate is 78%. The detection limit, defined as the minimum flux density for a source to be detected with 90% probability in a single observation, was in the range of 115-180mJy depending on declination. However, some sources as weak as 70mJy have been detected. Of 623 detected sources, 33 objects are detected for the first time in VLBI mode. We determined their coordinates with a median formal uncertainty of 20mas. The results of this work set the basis for future efforts to build the complete flux-limited sample of extragalactic sources at frequencies of 22GHz and higher at 3/4 of the celestial sphere.</description><source format="bibcode">2012AJ....144..150P</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/144/150</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/AJ/143/35">J/AJ/143/35 : KCAL VERA 22 GHz calibrator survey (Petrov+, 2012)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/419/1097">J/MNRAS/419/1097 : The EVN Galactic Plane Survey - EGaPS (Petrov, 2012)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/142/35">J/AJ/142/35 : The VLBA Galactic Plane Survey (VGaPS) (Petrov+, 2011)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/194/29">J/ApJS/194/29 : Observations of blazars at 15GHz (Richards+, 2011)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/139/1695">J/AJ/139/1695 : Celestial Reference Frame at 24 and 43 GHz (Lanyi+, 2010)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/MNRAS/402/2403">J/MNRAS/402/2403 : Australia Telescope 20GHz Survey Catalog (Murphy+, 2010)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/136/580">J/AJ/136/580 : Sixth VLBA calibrator survey: VCS6 (Petrov+, 2008)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/133/2487">J/AJ/133/2487 : VERA 22GHz Fringe Search Survey (Petrov+, 2007)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/133/1236">J/AJ/133/1236 : Fifth VLBA calibrator survey: VCS5 (Kovalev+, 2007)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/131/1872">J/AJ/131/1872 : Fourth VLBA calibrator survey: VCS4 (Petrov+, 2006)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/129/1163">J/AJ/129/1163 : Third VLBA calibrator survey: VCS3 (Petrov+, 2005)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/AJ/126/2562">J/AJ/126/2562 : Second VLBA calibrator survey: VCS2 (Fomalont+, 2003)</relatedResource><relatedResource ivo-id="ivo://CDS.VizieR/J/ApJS/141/13">J/ApJS/141/13 : VLBA calibrator survey: VCS1 catalog (Beasley+, 2002)</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/AJ/144/150</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/144/150</mirrorURL><mirrorURL 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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>JName</name><description>The IAU J2000.0 source name (JHHMM+DDMM)</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="10*">char</dataType><flag>primary</flag></column><column><name>BName</name><description>The IVS B1950.0 source name (HHMM+DDd) &lt;IVS BHHMM+DDd&gt; in Simbad</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="8*">char</dataType></column><column><name>T</name><description>[CN] Source type (Calibrator or New) (1)</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>N</name><description>[2/48] Number of observations source detected</description><ucd>meta.number</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>F1</name><description>? Median correlated 43GHz flux density at baseline projection lengths &lt;21.44 M{lambda}</description><unit>Jy</unit><ucd>stat.correlation;phot.flux.density;em.mm.30-50GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_F1</name><description>? Mean error in F1</description><unit>Jy</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>F2</name><description>? Median correlated 43GHz flux density at baseline projection lengths 21.44-42.88 M{lambda}</description><unit>Jy</unit><ucd>stat.correlation;phot.flux.density;em.mm.30-50GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_F2</name><description>? Mean error in F2</description><unit>Jy</unit><ucd>stat.error</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>F3</name><description>? Median correlated 43GHz flux density at baseline projection lengths &gt;42.88 M{lambda}</description><unit>Jy</unit><ucd>stat.correlation;phot.flux.density;em.mm.30-50GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>e_F3</name><description>? 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