J/A+AS/120/201ivo://CDS.VizieR/J/A+AS/120/201CDSLi J.Jin W.1998-08-28T15:09:17Z1998-08-28T15:09:03ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frradio-galaxiesastrometryBased on 28 individual catalogues, in which the positions of optical counterparts of extragalactic radio sources are listed, we compiled a combined catalogue by means of a weighted least squares adjustment. The catalogue is in the system of FK5/J2000.0. It consists of about five hundred sources, among which there are 56 primary sources with position uncertainties as 0.09". Comparisons show that the orientation differences between optical and radio frames are A1=-0.013"+/-0.012", A2=0.077"+/-0.012", A3=0.005"+/-0.009". Local relative deformations are not obvious within the precision of ground-based optical observations.1996A&AS..120..201Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/120/201CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/115/75 : Benchmark radio sources optical astrometry. III (Costa+, 1996)VII/54 : Extragalactic radio-source ident. cat. (Veron-Cetty+ 1983)I/218 : New Reference Frame defined by Extragalactic Radio Sourcehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/120/201https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/120/201http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/120/201https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/120/201https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/120/201http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/120/201GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/120/201/table3 (Coordinates of primary sources in the compiled catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/120/201/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/120/201/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/120/201/table3?GETtext/xml+votable180.050000true17.16150751.5833950.005555555555555556https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/120/201?format=asciiRadiodefaultJ/A+AS/120/201/table1The observations of optical counterparts of extragalactic radio sourcesSeqSequential numbermeta.id;meta.maincharprimaryCatCatalogue of referencemeta.id;meta.datasetcharEpEpoch of referencetime.epochcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference author namesmeta.bib.authorcharBibCodeReference BibCodemeta.bib.bibcodecharNbNumber of sourcesmeta.numberintDec1Lower value of declination rangedegpos.eq.dec;arith.difffloatDec2Upper value of declination rangedegpos.eq.dec;arith.difffloate_RAsrms uncertainty on right ascensionsstat.errorfloate_DEsrms uncertainty on declinationarcsecstat.errorfloatJ/A+AS/120/201/table3Coordinates of primary sources in the compiled cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource name (based on B1950 position)meta.id;meta.maincharStatus[P] Status of the source (P: primary)meta.notecharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination signpos.eq.dec;meta.maine_RAsrms uncertainty on right ascensionsstat.errorfloate_DEsrms uncertainty on declinationarcsecstat.errorfloatICIndividual catalogue in which the source is available (1)meta.id;meta.datasetcharTTS[QGB] Type of the source (2)meta.notecharmag? Magnitudemagphot.magfloatnullableNameOther namemeta.idcharJ/A+AS/120/201/table2Relative rotations from each individual catalogue to the combined onerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.id;meta.maincharprimaryNbNumber of sourcesmeta.numberintA1Relative rotation A1arcsecstat.fit.paramfloate_A1rms uncertainty on A1arcsecstat.errorfloatA2Relative rotation A2arcsecstat.fit.paramfloate_A2rms uncertainty on A2arcsecstat.errorfloatA3Relative rotation A3arcsecstat.fit.paramfloate_A3rms uncertainty on A3arcsecstat.errorfloat