J/MNRAS/385/1656ivo://CDS.VizieR/J/MNRAS/385/1656doi:10.26093/cds/vizier.73851656CDSSadler E.M.Ricci R.Ekers R.D.Sault R.J.Jackson C.A.De Zotti G.2024-07-06T20:15:46Z2009-07-26T22:11:06ZCDS support team

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

cds-question@unistra.frradio-sourcesradio-galaxiesquasarsWe have used the Australia Telescope Compact Array (ATCA) at 95GHz to carry out continuum observations of 130 extragalactic radio sources selected from the Australia Telescope 20GHz (AT20G) survey. We use a triple-correlation method to measure simultaneous 20- and 95-GHz flux densities for these objects, and over 90 per cent of our target sources are detected at 95GHz. We demonstrate that the ATCA can robustly measure 95-GHz flux densities with an accuracy of ~10 per cent in a few minutes for sources stronger than about 50mJy. We measure the distribution of radio spectral indices in a flux-limited sample of extragalactic sources, and show that the median 20-95GHz spectral index does not vary significantly with flux density for S_20_>150mJy . This finding allows us to estimate the extragalactic radio source counts at 95GHz by combining our observed 20-95GHz spectral-index distribution with the accurate 20-GHz source counts measured in the AT20G survey.2008MNRAS.385.1656Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/385/1656CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)VIII/81 : Sydney University Molonglo Sky Survey (SUMSS V2.1) (Mauch+ 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/385/1656https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/385/1656http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/385/1656https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/385/1656https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/385/1656http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/385/1656GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/385/1656/ATCA (Observations of 2005 and 2006)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/385/1656/ATCA?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/385/1656/ATCA?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/385/1656/ATCA?GETtext/xml+votable180.050000true6.5682917-35.21347220.0055555555555555566/20579 20611 20649 24608 24715 28715 33740 33774 33997 34009 34013 34026 34032 34038 34041 34043 34117-34118 34123 34158 34168 34185 34194 34210 34218 34253 34369 34437 34443 34461-34462 34489 34510 34528 34534 34569 34591 34616 34691 34699 35033 35047 35061 35093 35141 35238 35243 35249 35254 35256 35318 35370 35420 35432 35440 35475 35482 35491 35501 35532 35549 35562 35577 35579 35590 35670 35680 35722 35983 36003 38015 38184 38277 38279 38347 39577 39667 39848 42283 42286 42312 42580 42590 44034 44043 44170 45950 46007 46040 46055 46286 46294 46310 46331 46379 46394 46398 46467-46468 46529 46562 46566 46568-46569 46778 46844 46848 46872 46921 46993 47014 47016 47375 47383 47398 47408 47471 47505 47534 47572 47597 47605 47912 47941 47943 48207https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/385/1656?format=asciiRadiodefaultJ/MNRAS/385/1656/ATCAObservations of 2005 and 2006recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_Name[abc] Note on source (1)meta.notecharNameName (HHMM-DDMM)meta.id;meta.maincharf_Name[C*] Calibrator or low-latitude source (2)meta.codecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainONameAlternate namemeta.idcharl_BjmagLimit flag on Bjmagmeta.code.errorcharBjmag? Blue (B_J_) magnitude of the optical counterpart if any (3)magphot.mag;em.opt.BfloatnullableT[0/2]? Supercosmos classification of the optical ID (4)src.class.starGalaxyintnullablel_S95-1Limit flag on S95GHz1meta.code.errorcharS95-1? Flux density at 95GHz, 2005 Day1 or 2006 (5)mJyphot.flux.density;em.mm.50-100GHzintnullablel_S95-2Limit flag on S95GHz2meta.code.errorcharS95-2? Flux density at 95GHz, 2005 Day2 (5)mJyphot.flux.density;em.mm.50-100GHzintnullableS20-1? Flux density at 20GHz, 2005 or 2006 (5)mJyphot.flux.density;em.radio.12-30GHzintnullableS20-2? Flux density at 20GHz, 2004 (6)mJyphot.flux.density;em.radio.12-30GHzintnullablee_S20-2? rms uncertainty on S20GHz2mJystat.errorintnullableS8.6? Flux density at 8.6GHz, 2004 (6)mJyphot.flux.density;em.radio.6-12GHzintnullablee_S8.6? rms uncertainty on S8.6GHzmJystat.errorintnullableS4.8? Flux density at 4.8GHz, 2004 (6)mJyphot.flux.density;em.radio.3-6GHzintnullablee_S4.8? rms uncertainty on S4.8GHzmJystat.errorintnullableS1.4? NVSS (Cat. VIII/65) 1.4GHz flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_S1.4? rms uncertainty on S1.4GHzmJystat.errorfloatnullablel_S843Limit flag on S843MHzmeta.code.errorcharS843? SUMSS (Cat. VIII/81) 843MHz flux densitymJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_S843? rms uncertainty on S843MHzmJystat.errorfloatnullableYrYear of observationyrtime.epochintnullablez? Spectroscopic redshift of optical counterpartsrc.redshiftfloatnullableID[QG ? PN] Source class (Quasar, Galaxy, PN)src.classcharSimbadNameSimbad column added by the CDSmeta.idcharSPECFINDLink with radio surveys (Vollmer et al., Cat. VIII/85)meta.ref.urlchar