J/MNRAS/414/2528ivo://CDS.VizieR/J/MNRAS/414/2528doi:10.26093/cds/vizier.74142528CDSPetrov L.Phillips C.Bertarini A.Murphy T.Sadler E.M.2024-07-14T20:14:59Z2011-06-29T07:35:14ZCDS support team

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

cds-question@unistra.frastrometryvery-long-baseline-interferometryoptical-observationcatalogsradio-sourcesWe present a catalogue of accurate positions and correlated flux densities for 410 flat-spectrum, compact extragalactic radio sources previously detected in the AT20G survey. The catalogue spans the declination range [-90{deg}, -40{deg}] and was constructed from four 24-hour VLBI observing sessions with the Australian Long Baseline Array at 8.3GHz. The VLBI detection rate in these experiments is 97%, the median uncertainty of the source positions is 2.6mas, and the median correlated flux density on projected baselines longer than 1000km is 0.14Jy. The goals of this work are 1) to provide a pool of southern sources with positions accurate to a few milliarcsec, which can be used for phase referencing observations, geodetic VLBI and space navigation; 2) to extend the complete flux-limited sample of compact extragalactic sources to the southern hemisphere; and 3) to investigate the parsec-scale properties of high-frequency selected sources from the AT20G survey. As a result of this VLBI campaign, the number of compact radio sources south of declination -40 deg which have measured VLBI correlated flux densities and positions known to milliarcsec accuracy has increased by a factor of 3.5. The catalogue and supporting material is available at http://astrogeo.org/lcs1.2011MNRAS.414.2528Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/414/2528CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/142/35 : The VLBA Galactic Plane Survey. VGaPS. (Petrov+, 2011)J/MNRAS/402/2403 : Australia Telescope 20GHz Survey Catalog, AT20G (Murphy+, 2https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/414/2528https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/414/2528http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/414/2528https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/414/2528https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/414/2528http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/414/2528GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/414/2528/table6 (LCS1 catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/414/2528/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/414/2528/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/414/2528/table6?GETtext/xml+votable180.050000true2.941261125-84.72222488890.005555555555555556Cone search capability for table J/MNRAS/414/2528/table3 (The list of target sources that were not detected in LCS1 VLBI observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/414/2528/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/414/2528/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/414/2528/table3?GETtext/xml+votable180.050000true61.004125-71.15269440.0055555555555555566/32786 32790 32796 32808 32831 32856 32909-32911 32959 32969 32978-32979 33008 33010-33011 33026 33040 33046 33081 33094 33098 33151 33153 33173 33189 33195 33220 33234 33238 33259 33284-33286 33345 33357 33382 33406 33412 33460 33463 33468 33489 33537 33558 33575 33632 33634 33665 33679 33703 33712 33740 33752 33774 33789 33795 33827 33845 33868 33879 33881 33888 33967-33968 33975 33994 34009 34012 34026 34044 34050 34064 34095 34104 34187 34203 34313 34334 34368-34369 34371 34462 34871 34901 34911 34918 35016 35082 35093 35119 35230 35243 35389 35391 35396 35401-35402 35420 35475 35484 35522 36910 36916 36928 36972 37032 37040 37047 37056 37062 37091 37104 37156 37191 37201 37203 37215 37231 37234 37238 37252 37254 37283 37285 37290 37304 37307 37311 37313 37336 37354 37368 37438 37469 37519 37526 37529 37534 37559 37587 37602 37627 37667 37675 37677 37688 37735 37771 37777 37779-37780 37823 37832 37888 37950 37959 37966 37974 38000 38015 38033 38037 38039 38046 38059 38072 38108 38110 38112 38128 38169 38279 38289 38296 38916 38930 38939 38942 38948 38950 38952-38953 38966 38993 39004 39023 39050 39077 39081 39087 39129 39131-39132 39193 39221 39298 39467 39469 39489 40968 40995 40997 41047 41080 41127 41130 41148 41193 41240 41302 41325 41330 41355-41356 41394 41396 41428 41435 41460 41464 41510 41524 41545-41546 41574 41613 41618-41619 41623 41649 41717 41725 41757 41787 41789-41790 41818 41839 41846 41881 41903 41982 41991 41996 42012 42016-42017 42020 42024 42033 42039-42040 42043 42054 42062 42065 42071 42076 42105 42107 42161 42177 42238 42249 42256 42325 42329-42330 42332 42411 42417 42540 42548 42579 42589 42662 42664 43027 43046-43047 43112 43188 43256 43259 43262 43272 43281 43283 43337 43412 43418 43528 43530 43533 43563 43566-43567 43576 43591 43605 43696 45062 45065 45081 45094 45099 45108 45113 45158-45159 45176 45214 45216 45227 45235 45250 45259 45262 45286 45295 45303 45358 45364 45371 45379 45400 45415 45424 45451 45453 45463 45482 45490-45492 45497 45511 45513 45522 45540 45558 45567 45571 45586 45612 45619 45633 45645 45647 45655 45660 45665 45690 45698 45713 45728 45761 45770 45811 45835 45874 45907 45923 45943 45955 45957 45972 45999-46000 46040 46109 46123 46157 46174-46175 46186 46204 46215 46226 46232 46259 46331 46354 46356 46369 46374 46390 46404 46445 46467-46468 46619 46724 47104 47112 47122 47154 47187 47237 47248-47249 47277 47304 47341 47343 47353 47383 47453 47512 47656 476635.499637869737896e-24 5.499637869737896e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/414/2528?format=asciiOpticalRadiodefaultJ/MNRAS/414/2528/table6LCS1 cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJnameIAU J2000 source namemeta.id;meta.maincharBnameIVS B1950 source namemeta.idcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.maine_RAJ2000Inflated right ascension position uncertainty (without cos(delta) factor)masstat.error;pos.eq.rafloatDEJ2000Declination (J2000.0)pos.eq.dec;meta.maine_DEJ2000Inflated declination position uncertaintymasstat.error;pos.eq.decfloatCorr[-1,1] Correlation between estimates of right ascension and declinationstat.correlationfloatNobsNumber of used observationsmeta.numberintFlux1Median correlated 8.3GHz flux density at baseline project length range 0-6M{lambda}Jyphot.flux.density;em.radio.6-12GHzfloate_Flux1rms uncertainty on Flux1Jystat.errorfloatFlux2Median correlated 8.3GHz flux density at baseline project length range 0-19M{lambda}Jyphot.flux.density;em.radio.6-12GHzfloate_Flux2? rms uncertainty on Flux2Jystat.errorfloatnullableFlux3Median correlated 8.3GHz flux density at baseline project length range 19-44M{lambda}Jyphot.flux.density;em.radio.6-12GHzfloate_Flux3? rms uncertainty on Flux3Jystat.errorfloatnullableSEDPlot the spectrum with SPECFIND (Vollmer et al. 2009, Cat. VIII/85)meta.ref.urlcharJ/MNRAS/414/2528/table5*Catalogue of source-correlated flux-density estimates for both 410 target sources and 111 calibrator sources in each experimentrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJnameIAU J2000 source namemeta.id;meta.maincharprimaryBnameIVS B1950 source namemeta.idcharDateObservation datetime.epoch;obsnullableSt.[Cal ] "Cal" if it was used as an amplitude calibratormeta.codecharNobsNumber of used observationsmeta.numberintFlux1Median correlated 8.3GHz flux density at baseline project length range 0-6M{lambda}Jyphot.flux.density;em.radio.6-12GHzfloate_Flux1rms uncertainty on Flux1Jystat.errorfloatFlux2? Median correlated 8.3GHz flux density at baseline project length range 0-19M{lambda}Jyphot.flux.density;em.radio.6-12GHzfloatnullablee_Flux2? rms uncertainty on Flux2Jystat.errorfloatnullableFlux3Median correlated 8.3GHz flux density at baseline project length range 19-44M{lambda}Jyphot.flux.density;em.radio.6-12GHzfloate_Flux3? rms uncertainty on Flux3Jystat.errorfloatnullableExpExperiment namemeta.id;obscharJ/MNRAS/414/2528/table3The list of target sources that were not detected in LCS1 VLBI observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJnameIAU J2000 source namemeta.id;meta.maincharBnameIVS B1950 source namemeta.idcharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainS8.3Flux density in mJy extrapolated to 8.3GHzmJyphot.flux.density;em.radio.6-12GHzfloatalpha? Spectral index {alpha} (in sense S({nu}){prop.to}{nu}^{alpha}^)spect.indexfloatnullableCommComment flag (1)meta.code.errorintSEDPlot the spectrum with SPECFIND (Vollmer et al. 2009, Cat. VIII/85)meta.ref.urlchar