J/MNRAS/457/1496ivo://CDS.VizieR/J/MNRAS/457/1496doi:10.26093/cds/vizier.74571496CDSWhittam I.H.Riley J.M.Green D.A.Davies M.L.Franzen T.M.O.,Rumsey C.Schammel M.P.Waldram E.M.2024-08-15T20:17:53Z2016-02-09T15:24:57ZCDS support team

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

cds-question@unistra.frradio-sourcessurveysradio-continuum-emissionWe present deep 15.7-GHz observations made with the Arcminute Microkelvin Imager (AMI) Large Array in two fields previously observed as part of the Tenth Cambridge (10C) survey. These observations allow the source counts to be calculated down to 0.1mJy, a factor of five deeper than achieved by the 10C survey. The new source counts are consistent with the extrapolated fit to the 10C source count, and display no evidence for either steepening or flattening of the counts. There is thus no evidence for the emergence of a significant new population of sources (e.g. starforming) at 15.7GHz flux densities above 0.1mJy, the flux density level at which we expect starforming galaxies to begin to contribute. Comparisons with the de Zotti et al. model and the SKADS Simulated Sky show that they both underestimate the observed number of sources by a factor of two at this flux density level. We suggest that this is due to the flat-spectrum cores of radio galaxies contributing more significantly to the counts than predicted by the models.2016MNRAS.457.1496Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/457/1496CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/415/2708 : 10C survey of radio sources at 15.7GHz (Davies+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/457/1496https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/457/1496http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/457/1496https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/457/1496https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/457/1496http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/457/1496GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/457/1496/10c_cont (The extended 10C source list for the Lockman Hole and AMI001 fields)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/457/1496/10c_cont?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/457/1496/10c_cont?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/457/1496/10c_cont?GETtext/xml+votable180.050000true7.390458332.74789440.0055555555555555565/5084 6/6047 6069 6071 6090 6112 20315 20318 20340-20342 203451.0402929099001329e-23 1.0402929099001329e-23https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/457/1496?format=asciiRadiodefaultJ/MNRAS/457/1496/10c_contThe extended 10C source list for the Lockman Hole and AMI001 fieldsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDSource designation (JHHMMSS+DDMMSS)meta.id;meta.maincharGroupGroup designation (HHMMSS+DDMMSS)meta.id;phys.atmol.configurationcharN? Number of components in groupmeta.numberintnullableRAJ2000Peak right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Peak declination (J2000)pos.eq.dec;meta.mainSpkPeak flux density at 15.7GHzmJyphot.flux.density;em.radio.12-30GHzfloate_SpkError on peak flux densitymJystat.errorfloatRAI? Centroid right ascension (J2000) (1)pos.eq.ranullableDEI? Centroid declination (J2000) (1)pos.eq.decnullableSint? Integrated flux density at 15.7GHzmJyphot.flux.density;em.radio.12-30GHzfloatnullablee_Sint? Error on integrated flux densitymJystat.errorfloatnullableeCrit? Critical value of the major axis (2)arcsecstat.fit.paramfloatnullableeMaj? Major axis after deconvolutionarcsecphys.angSizefloatnullableeMin? Minor axis after deconvolutionarcsecphys.angSizefloatnullablePA? Position angle of major axisdegpos.posAngfloatnullablet[PE-] Point or Extended source (3)meta.codechar