J/MNRAS/496/3469ivo://CDS.VizieR/J/MNRAS/496/3469doi:10.26093/cds/vizier.74963469CDSHeywood I.Hale C.L.Jarvis M.J.Makhathini S.Peters J.A.,Sebokolodi M.L.L.Smirnov O.M.2024-08-21T20:15:26Z2023-10-12T15:28:10ZCDS support team

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

cds-question@unistra.frradio-sourcesinterferometryastrometryModern radio telescopes are routinely reaching depths where normal star-forming galaxies are the dominant observed population. Realizing the potential of radio as a tracer of star formation and black hole activity over cosmic time involves achieving such depths over representative volumes, with radio forming part of a larger multiwavelength campaign. In pursuit of this, we used the Karl G. Jansky Very Large Array (VLA) to image ~5deg^2^ of the VIDEO/XMM-LSS extragalactic deep field at 1-2GHz. We achieve a median depth of 16uJy/beam with an angular resolution of 4.5arcsec. Comparisons with existing radio observations of XMM-LSS showcase the improved survey speed of the upgraded VLA: we cover 2.5 times the area and increase the depth by ~20 per cent in 40 per cent of the time. Direction-dependent calibration and wide-field imaging were required to suppress the error patterns from off-axis sources of even modest brightness. We derive a catalogue containing 5762 sources from the final mosaic. Sub-band imaging provides in-band spectral indices for 3458 (60 per cent) sources, with the average spectrum becoming flatter than the canonical synchrotron slope below 1mJy. Positional and flux density accuracy of the observations, and the differential source counts are in excellent agreement with those of existing measurements. A public release of the images and catalogue accompanies this article.2020MNRAS.496.3469Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/496/3469CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/496/3469https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/496/3469http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/496/3469https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/496/3469https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/496/3469http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/496/3469GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/496/3469/table1 (Radio source catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/496/3469/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/496/3469/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/496/3469/table1?GETtext/xml+votable180.050000true35.42963-4.229050.0055555555555555565/4422 6/17677 17679 17681-17683 17686-17687 17692-17694 17701 17712-17713https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/496/3469?format=asciiRadiodefaultJ/MNRAS/496/3469/table1Radio source cataloguerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinte_alpha? Error on alphastat.error;pos.eq.rafloatnullableID2Second IAU source identifiermeta.idcharRAJ2000Right ascension (J2000) (1)degpos.eq.ra;meta.mainDEJ2000Declination (J2000) (1)degpos.eq.dec;meta.maine_RAJ2000Error on RAdeg (2)arcsecstat.error;pos.eq.rafloate_DEJ2000Error on DEdeg (2)arcsecstat.error;pos.eq.decfloatRApeakRight ascension of the peak (J2000) (3)degpos.eq.raDEpeakDeclination of the peak (J2000) (3)degpos.eq.decSintIntegrated flux density (4)mJyphot.flux.density;em.radiodoublee_SintError on SintmJystat.errordoubleSpeakPeak intensity (5)mJy/beamphot.flux.density;em.radiodoublee_SpeakError on SpeakmJy/beamstat.errordoublermspeakRoot-mean square value in the map at the peak position of the sourcemJy/beaminstr.det.noisedoublee_rmspeakError on rmspeakmJy/beamstat.errordoublethetamajMajor axis size of the segment (6)arcsecphys.angSizefloatID3Third IAU source identifiermeta.idcharIDRadio source identifier (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharthetaminMinor axis size of the segment (7)arcsecphys.angSize;srcfloatPAPosition angle of the sourcedegpos.posAngfloatalpha? Spectral index (8)spect.indexfloatnullable