J/MNRAS/453/4244ivo://CDS.VizieR/J/MNRAS/453/4244doi:10.26093/cds/vizier.74534244CDSWhittam I.H.Riley J.M.Green D.A.Jarvis M.J.Vaccari M.2024-08-15T20:15:32Z2016-09-16T07:43:25ZCDS support team

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

cds-question@unistra.frsurveysradio-sourcesphotometryredshiftedA complete, flux density limited sample of 96 faint (>0.5mJy) radio sources is selected from the 10C survey at 15.7GHz in the Lockman Hole. We have matched this sample to a range of multi-wavelength catalogues, including Spitzer Extragalactic Representative Volume Survey, Spitzer Wide-area Infrared Extragalactic survey, United Kingdom Infrared Telescope Infrared Deep Sky Survey and optical data; multi-wavelength counterparts are found for 80 of the 96 sources and spectroscopic redshifts are available for 24 sources. Photometric redshifts are estimated for the sources with multi-wavelength data available; the median redshift of the sample is 0.91 with an interquartile range of 0.84. Radio-to-optical ratios show that at least 94 per cent of the sample are radio loud, indicating that the 10C sample is dominated by radio galaxies. This is in contrast to samples selected at lower frequencies, where radio-quiet AGN and star-forming galaxies are present in significant numbers at these flux density levels. All six radio-quiet sources have rising radio spectra, suggesting that they are dominated by AGN emission. These results confirm the conclusions of that the faint, flat-spectrum sources which are found to dominate the 10C sample below ~1mJy are the cores of radio galaxies. The properties of the 10C sample are compared to the Square Kilometre Array Design Studies Simulated Skies; a population of low-redshift star-forming galaxies predicted by the simulation is not found in the observed sample.2015MNRAS.453.4244Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/453/4244CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/326 : Revised SWIRE photometric redshifts (Rowan-Robinson+, 2013)J/MNRAS/415/2708 : 10C survey of radio sources at 15.7GHz (Davies+, 2011)J/ApJS/198/1 : Photometry catalogs for the Lockman Hole (Fotopoulou+, 2012)J/MNRAS/429/2080 : Lockman Hole 10C sources radio spectral indiceshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/453/4244https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/453/4244http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/453/4244https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/453/4244https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/453/4244http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/453/4244GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap2.483060040379131e-20 1.7798557115773645e-19RadiodefaultJ/MNRAS/453/4244/tablea1Multi-wavelength properties of the 96 10C sources studied in this paperFlag[1/7] Optical matching flag (1)meta.code.errorintKmag? K magnitude (AB)magphot.mag;em.IR.KfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint10C10C designation (JHHMMSS+DDMMSS)meta.id;meta.maincharprimarygmag? g magnitude (AB)magphot.mag;em.opt.Bfloatnullableimag? i magnitude (AB)magphot.mag;em.opt.Ifloatnullablermag? r magnitude (AB)magphot.mag;em.opt.Rfloatnullablezmag? z magnitude (AB)magphot.mag;em.opt.IfloatnullableJmag? J magnitude (AB)magphot.mag;em.IR.JfloatnullableFSERVS1? SERVS1 (3.6um) flux densityuJyphot.mag;em.IR.3-4umfloatnullablen_FSERVS1[*] *: value estimated from the SERVS imagemeta.notecharFSERVS2? SERVS2 (4.5um) flux densityuJyphot.mag;em.IR.4-8umfloatnullableFSWIRE1? SWIRE1 (3.6um) flux densityuJyphot.mag;em.IR.3-4umfloatnullableFSWIRE2? SWIRE2 (4.5um) flux densityuJyphot.mag;em.IR.4-8umfloatnullableFSWIRE3? SWIRE3 (5.8um) flux densityuJyphot.flux.density;em.IR.4-8umfloatnullableFSWIRE4? SWIRE4 (8.0um) flux densityuJyphot.flux.density;em.IR.8-15umfloatnullablez? Le PHARE redshiftsrc.redshiftfloatnullableRR13z? Redshift from Rowan-Robinson et al., (2013MNRAS.428.1958R, Cat. II/326)src.redshift;pos.heliocentricfloatnullableF12z? Redshift from Fotopoulou et al. (2012, Cat. J/ApJS/198/1)src.redshift;pos.heliocentricfloatnullablezsp? Spectroscopic redshiftsrc.redshiftfloatnullabler_zspReference for zspmeta.ref.urlcharzBest? Best redshift used in the analysis (2)src.redshift;pos.heliocentricfloatnullablef_z[1/4]? Origin of final redshift value flag (3)meta.codeintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/453/4244/tablea2References for the spectroscopic redshifts used in this workrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint10C10C designation (JHHMMSS+DDMMSS)meta.id;meta.maincharzspSpecroscopic redshiftsrc.redshiftfloatr_zspReference for redshiftmeta.ref;pos.framechar