J/A+A/638/A46ivo://CDS.VizieR/J/A+A/638/A46doi:10.26093/cds/vizier.36380046CDSSlaus B.Smolcic V.Novak M.Fotopoulou S.Ciliegi P.Jurlin N.,Ceraj L.Tisanic K.Birkinshaw M.Bremer M.Chiappetti L.Horellou C.,Huynh M.Intema H.Kolokythas K.Pierre M.Raychaudhury S.,Rottgering H.2023-03-10T06:41:31Z2020-06-09T08:58:45ZCDS support team

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

cds-question@unistra.frradio-galaxiesastrometryradio-continuum-emissionradio-sourcesWe study the space density evolution of active galactic nuclei (AGN) using the 610MHz radio survey of the XXL-North field, performed with the Giant Metrewave Radio Telescope (GMRT). The survey covers an area of 30.4deg^2^, with a beamsize of 6.5arcsec. The survey is divided into two parts, one covering an area of 11.9deg^2^ with 1{sigma} rms noise of 200uJy/beam and the other spanning 18.5deg^2^ with rms noise of 45uJy/beam. We extracted the catalog of radio components above 7. The catalog was cross-matched with a multi-wavelength catalog of the XXL-North field (covering about 80% of the radio XXL-North field) using a likelihood ratio method, which determines the counterparts based on their positions and their optical properties. The multi-component sources were matched visually with the aid of a computer code: Multi-Catalog Visual Cross-Matching (MCVCM). A flux density cut above 1mJy selects AGN hosts with a high purity in terms of star formation contamination based on the available source counts. After crossmatching and elimination of observational biases arising from survey incompleteness, the number of remaining sources was 1150. We constructed the rest-frame 1.4GHz radio luminosity functions of these sources using the maximum volume method. This survey allows us to probe luminosities of 23<~log(L1.4GHz[W/Hz])<~28 up to redshifts of z~=2.1. Our results are consistent with the results from the literature in which AGN are comprised of two differently evolving populations, where the high luminosity end of the luminosity functions evolves more strongly than the low-luminosity end.2020A&A...638A..46Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/638/A46CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIX/49 : XXL Survey: First results (Pierre+, 2016)IX/52 : XXL Survey. DR2 (Chiappetti+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/638/A46https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/638/A46http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/638/A46https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/638/A46https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/638/A46http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/638/A46GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/638/A46/gmrtctpt (GMRT XXL-N 610 MHz counterpart catalogue)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/638/A46/gmrtctpt?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/638/A46/gmrtctpt?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/638/A46/gmrtctpt?GETtext/xml+votable180.050000true30.276935-6.81587110.0055555555555555565/4419 4421-4425 4428 6/17503 17525 17671 17674-17675 17681-17683 17705 17708-17709 17716-17717 36795 367984.0419025326745717e-25 4.0419025326745717e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/638/A46?format=asciiRadiodefaultJ/A+A/638/A46/gmrtctptGMRT XXL-N 610 MHz counterpart catalogueNameSource namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintId? Source numeric identifier (1)meta.idintnullableRAdeg? Right ascension (J2000)degpos.eq.ranullableDEdeg? Declination (J2000)degpos.eq.decnullablee_RAdeg? Positional error on RAarcsecstat.error;pos.eq.radoublenullablee_DEdeg? Positional error on DECarcsecstat.error;pos.eq.decdoublenullableSpeak? Peak flux density at 610MHzJy/beamphot.flux.density;em.radio.400-750MHz;stat.maxdoublenullablerms? Local rms valueJy/beaminstr.det.noisedoublenullableStotalTotal flux density at 610MHzJyphot.flux.density;em.radio.400-750MHzdoublee_Stotal? Error on total flux densityJystat.errordoublenullablealpha? 610MHz to 1.4GHz spectral indexspect.index;em.radio.400-750MHzfloatnullableRAIdegRight ascension of IRAC counterpartdegpos.eq.raDEIdegDeclination of IRAC counterpartdegpos.eq.deczphphotometric redshiftsrc.redshiftfloatLR? Likelihood ratio of the counterpartstat.likelihood;arith.ratiodoublenullableAreaFlag[0/1] Area flag (inner/outer) (2)meta.codeintEdgeFlag[0/1] Edge flag (3)meta.codeintNewFlag[0/2] New source flag (4)meta.codeint_RAPositions from Name when no positions (right ascension part)degpos.eq.ra;meta.main_DEPositions from Name when no positions (declination part)degpos.eq.dec;meta.main