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<ri:Resource created="2003-05-31T19:54:28Z" 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>A search for Compact High-Velocity Clouds</title><shortName>J/A+A/391/159</shortName><identifier>ivo://CDS.VizieR/J/A+A/391/159</identifier><altIdentifier>doi:10.26093/cds/vizier.33910159</altIdentifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>De Heij V.</name></creator><creator><name>Braun R.</name></creator><creator><name>Burton W.B.</name></creator><date role="Updated">2017-10-05T08:00:54Z</date><date role="Created">2003-05-31T19:54:28Z</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>interstellar-medium</subject><subject>h-i-line-emission</subject><description>An automated search is applied to the Leiden/Dwingeloo HI Survey (LDS) for high-velocity clouds north of Dec.=-28{deg}. From the general catalog we extract a sample of relatively small (less than about 8{deg}) and isolated high-velocity clouds, CHVCs: anomalous-velocity HI clouds which are sharply bounded in angular extent with no kinematic or spatial connection to other HI features down to a limiting column density of 1.5x10^18cm^-2. Unambiguously isolated objects are given the "CHVC" designation, while those with some degree of ambiguity in this classification or designated "CHVC:" or "CHVC?". The vast majority of features show diffuse connections at low column densities with the extended HVC complexes and are simply designated as "HVC" features. The automated search algorithm has been applied to the HIPASS and to the Leiden/Dwingeloo data sets. The results from the LDS are described here; Putman et al. (2002, Cat. &lt;J/AJ/123/873&gt;) describe application of this algorithm to the HIPASS material. Only those catalog entries which have and additional ID listed have been confirmed in independent data.</description><source format="bibcode">2002A&amp;A...391..159D</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/391/159</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/123/873">J/AJ/123/873 : HIPASS high-velocity clouds (Putman+, 2002)</relatedResource></relationship></content><rights>https://cds.unistra.fr/vizier-org/licences_vizier.html</rights><capability><interface xsi:type="vr:WebBrowser"><accessURL 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use="base">https://tapvizier.cds.unistra.fr/TAPVizieR/tap</accessURL></interface></capability><capability xsi:type="cs:ConeSearch" standardID="ivo://ivoa.net/std/ConeSearch"><description>Cone search capability for table J/A+A/391/159/table1 (Catalog of high velocity HI features in the LDS)</description><interface xsi:type="vs:ParamHTTP" role="std"><accessURL use="base">https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/391/159/table1?</accessURL><mirrorURL title="VizieR at IUCAA: Pune, India">https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/391/159/table1?</mirrorURL><mirrorURL title="VizieR at SAAO: SAAO, South Africa">http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/391/159/table1?</mirrorURL><queryType>GET</queryType><resultType>text/xml+votable</resultType></interface><maxSR>180.0</maxSR><maxRecords>50000</maxRecords><verbosity>true</verbosity><testQuery><ra>264.525</ra><dec>-25.4333</dec><sr>0.005555555555555556</sr></testQuery></capability><coverage><spatial>6/19 26-27 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48963 48971 49043 49053 49076 49081 49088 49124 49128 49134</spatial><footprint ivo-id="ivo://ivoa.net/std/moc">https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/391/159?format=ascii</footprint><waveband>Radio</waveband></coverage><tableset><schema><name>default</name><table><name>J/A+A/391/159/table1</name><description>Catalog of high velocity HI features in the LDS</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Seq</name><description>Running ID number</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Pref</name><description>Name-prefix (one of HVC, CHVC, CHVC:, CHVC?)</description><ucd>src.class</ucd><dataType xsi:type="vs:VOTableType" arraysize="5*">char</dataType></column><column><name>Suff</name><description>Name-suffix (LLL.L+BB.B+VVV)</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="14*">char</dataType></column><column><name>RAJ2000</name><description>Right ascension (J2000)</description><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DEJ2000</name><description>Declination (J2000)</description><ucd>pos.eq.dec;meta.main</ucd></column><column><name>LRV</name><description>LSR (Local Standard of Rest) radial velocity</description><unit>km/s</unit><ucd>spect.dopplerVeloc;pos.lsr</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>GRV</name><description>GSR (Galactic Standard of Rest) velocity</description><unit>km/s</unit><ucd>phys.veloc;pos.galactocentric</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>LGRV</name><description>LGSR (Local Group Standard of Rest) velocity</description><unit>km/s</unit><ucd>phys.veloc;pos.lg</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>FWHM</name><description>Velocity FWHM</description><unit>km/s</unit><ucd>spect.line.width</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>Maj</name><description>Major axis FWHM</description><unit>deg</unit><ucd>phys.angSize</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Min</name><description>Minor axis FWHM</description><unit>deg</unit><ucd>phys.angSize;src</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>PAlb</name><description>[-90,90] Major axis PA</description><unit>deg</unit><ucd>pos.posAng</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>PTB</name><description>Peak HI brightness temperature</description><unit>K</unit><ucd>obs.param</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>NHI</name><description>Peak HI column density in units of 10^20^cm^-2^</description><unit>1e+20cm**-2</unit><ucd>phys.columnDensity;stat.max</ucd><dataType xsi:type="vs:VOTableType">float</dataType></column><column><name>Flux</name><description>Total HI Flux</description><unit>Jy.km/s</unit><ucd>phot.flux.density;em.radio.750-1500MHz</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>IDs</name><description>? Other published IDs</description><ucd>meta.ref</ucd><dataType xsi:type="vs:VOTableType" arraysize="20*">char</dataType></column><column><name>Simbad</name><description>Simbad column added by the CDS</description><ucd>meta.ref.url</ucd><dataType xsi:type="vs:VOTableType" arraysize="*">char</dataType></column></table></schema></tableset></ri:Resource>