J/MNRAS/512/6104ivo://CDS.VizieR/J/MNRAS/512/6104doi:10.26093/cds/vizier.75126104CDSGurkan G.Prandoni I.O'Brien A.Raja W.Marchetti L.Vaccari M.,Driver S.Taylor E.Franzen T.Brown M.J.I.Shabala S.Andernach H.,Hopkins A.M.Norris R.P.Leahy D.Bilicki M.Farajollahi H.Galvin T.,Heald G.Koribalski B.S.An T.Warhurst K.2025-08-11T20:18:54Z2025-06-16T08:55:34ZCDS support team

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

cds-question@unistra.frsurveysradio-sourcesradio-continuum-emissiongalaxiesastrometrygalaxy-classification-systemsWe present the Australian Square Kilometre Array Pathfinder (ASKAP) observations of the Galaxy and Mass Assembly (GAMA)-23h field. The survey was carried out at 887.5 MHz and covers an ~83 square deg field. We imaged the calibrated visibility data, taken as part of the Evolutionary Mapping of Universe Early Science Programme, using the latest version of the ASKAPSoft pipeline. The final mosaic has an angular resolution of 10 arcsec and a central rms noise of around 38 {mu}Jy beam^-1^. The derived radio source catalogue has 39812 entries above a peak flux density threshold of 5{sigma}. We searched for the radio source host galaxy counterparts using the GAMA spectroscopic (with an i-band magnitude limit of 19.2 mag) and multiwavelength catalogues that are available as part of the collaboration. We identified hosts with GAMA spectroscopic redshifts for 5934 radio sources. We describe the data reduction, imaging, and source identification process, and present the source counts. Thanks to the wide area covered by our survey, we obtain very robust counts down to 0.2 mJy. ASKAP's exceptional survey speed, providing efficient, sensitive, and high-resolution mapping of large regions of the sky in conjunction with the multiwavelength data available for the GAMA23 field, allowed us to discover 63 giant radio galaxies. The data presented here demonstrate the excellent capabilities of ASKAP in the pre-SKA era.2022MNRAS.512.6104Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/512/6104CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/635/A5 : LoTSS giant radio galaxies. I. (Dabhade+, 2020)J/A+A/602/A2 : VLA-COSMOS 3 GHz Large Project. II. (Smolcic+, 2017)J/A+A/659/A1 : LOFAR Two-metre Sky Survey (LoTSS) DR2 (Shimwell+, 2022)J/A+A/598/A104 : LOFAR Two-metre Sky Survey (Shimwell+, 2017)J/A+A/648/A104 : LOFAR LBA Sky Survey. I. (de Gasperin+, 2021)J/ApJ/909/193 : The 1.266GHz MeerKAT DEEP2 component catalogJ/ApJ/915/70 : WALLABY pilot survey: HI gas in Hydra cluster (Wang+,2021)J/MNRAS/460/4433 : SDSS Stripe 82 VLA 1-2GHz survey (Heywood+, 2016)J/MNRAS/481/4548 : New constraints on the 1.4GHz source countsJ/MNRAS/452/2087 : Galaxy And Mass Assembly (GAMA): DR2 (Liske+, 2015)J/MNRAS/506/3540 : ASKAP-EMU ESP LMC Radio Continuum Survey (Pennock+, 2021)J/MNRAS/490/1202 : ASKAP EMU ESP, Radio Continuum Survey of the SMCJ/other/PASA/38.58 : Rapid ASKAP Continuum Survey. II. RACS cat. (Hale+, 2021)J/A+A/598/A78 : The GMRT 150MHz all-sky radio survey (Intema+, 2017)VIII/78 : Sydney University Molonglo Sky Survey (SUMSS)VIII/100 : GaLactic and Extragalactic All-sky MWA surveyVII/294 : The Million Quasars (Milliquas) catalogue, version 8VII/290 : The Million Quasars (Milliquas) catalogue, version 7.2VII/282 : T-RECS. Tiered Radio Extragalactic Continuum SimulationV/158 : Millions of Optical Radio/X-ray Associations (MORX) v2II/344 : KiDS-ESO-DR2 multi-band source catalog (de Jong+, 2015)II/343 : VIKING catalogue data release 2 (Edge+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/512/6104https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/512/6104http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/512/6104https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/512/6104https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/512/6104http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/512/6104GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/512/6104/table (The final ASKAP radio source catalogue in G23 field region)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/512/6104/table?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/512/6104/table?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/512/6104/table?GETtext/xml+votable180.050000true348.025099483604-29.95408545863750.0055555555555555564/2911 2932 5/4136 4138 11639 11643 11719 11724-11725 11732-11734 11736-11738 6/16522 16550 16556 16558 16896-16898 46553-46555 46563 46565-46567 46569-46571 46867 46869-46871 46873-46875 46905 46908-46909 46911 46940-46942 46956-46958 46960-46962 47040-470415.883949854262862e-25 5.883949854262862e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/512/6104?format=asciiOpticalRadiodefaultJ/MNRAS/512/6104/tableThe final ASKAP radio source catalogue in G23 field regionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name that is generated using the final radio source position as (EMUJHHMMSS.s+DDMMAA) (Source_Name)meta.id;meta.maincharRAJ2000Flux-weighted right ascension (J2000) (RA)degpos.eq.ra;meta.mainindexede_RAJ2000Mean uncertainty of RAdeg (E_RA)degstat.error;pos.eq.radoubleDEJ2000Flux-weighted declination (J2000) (DEC)degpos.eq.dec;meta.mainindexede_DEJ2000Mean uncertainty of DEdeg (E_DEC)degstat.error;pos.eq.decdoubleFtotIntegrated radio source flux density at 887.5 MHz with 288 MHz bandwidth (Total_flux)Jyphot.flux.density;em.radio.750-1500MHzdoublee_FtotMean uncertainty of Ftot (E_Total_flux)Jystat.errordoubleFpeakPeak flux density at 887.5 MHz with 288 MHz bandwidth (Peak_flux)Jy/beamphot.flux.density;em.radio.750-1500MHzdoublee_FpeakMean uncertainty of Fpeak (E_Peak_flux)Jy/beamstat.errordoubleLength? Source length (Length)arcsecphys.angSizedoublenullableWidth? Source width (Width)arcsecphys.angSizedoublenullablePAPosition angle (PA)degpos.posAngdoubleDCMajAxis? Deconvolved major axis (DC_Maj)arcsecphys.angSize.smajAxisdoublenullablee_DCMajAxis? Mean uncertainty of DCMajAxis (E_DC_Maj)arcsecstat.errordoublenullableDCMinAxis? Deconvolved minor axis (DC_Min)arcsecphys.angSize.sminAxisdoublenullablee_DCMinAxis? Mean uncertainty of DCMinAxis (E_DC_Min)arcsecstat.errordoublenullableMajAxis? Major axis (Maj)arcsecphys.angSize.smajAxisdoublenullablee_MajAxis? Mean uncertainty of MajAxis (E_Maj)arcsecstat.error;phys.angSizedoublenullableMinAxis? Minor axis (Min)arcsecphys.angSize.sminAxisdoublenullablee_MinAxis? Mean uncertainty of MinAxis (E_Min)arcsecstat.error;phys.angSizedoublenullableSep? Separation between the farthest source components (Separation)arcsecpos.angDistancedoublenullableRMSThe local rms noise used for the source detection (Isl_rms)Jy/beaminstr.det.noisedoubleSourceMorphology code (SCode) (1)meta.codecharSizeSource size (Size) (2)arcsecphys.angSizedouble