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dc.contributor.authorWhittam, IHen
dc.contributor.authorRiley, Juliaen
dc.contributor.authorGreen, Daviden
dc.contributor.authorJarvis, MJen
dc.contributor.authorVaccari, Men
dc.date.accessioned2015-08-13T14:19:42Z
dc.date.available2015-08-13T14:19:42Z
dc.date.issued2015-09-17en
dc.identifier.citationMonthly Notices of the Royal Astronomical Society 2015, 453(4): 4244-4263. doi: 10.1093/mnras/stv1901
dc.identifier.issn0035-8711
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/249305
dc.description.abstractA complete, flux density limited sample of 96 faint (> 0.5 mJy) radio sources is selected from the 10C survey at 15.7 GHz in the Lockman Hole. We have matched this sample to a range of multi-wavelength catalogues, including SERVS, SWIRE, UKIDSS and optical data; multi-wavelength counterparts are found for 80 of the 96 sources and spectroscopic redshifts are available for 24 sources. Photometric reshifts are estimated for the sources with multiwavelength 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 starforming 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 Paper I that the faint, flat-spectrum sources which are found to dominate the 10C sample below ~ 1 mJy are the cores of radio galaxies. The properties of the 10C sample are compared to the SKADS Simulated Skies; a population of low-redshift starforming galaxies predicted by the simulation is not found in the observed sample.
dc.description.sponsorshipIHW acknowledges a Science and Technology Facilities Council studentship. IHW, MJ, MV acknowledge support from the Square Kilometre Array South Africa project and the South African National Research Foundation. MV is supported by the European Commission Research Executive Agency FP7-SPACE- 2013-1 Scheme (Grant Agreement 607254 - Herschel Extragalactic Legacy Project - HELP). This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Opinions expressed and conclusions arrived at are those of the authors and not necessarily attributed to the SKA SA. We thank the anonymous referee for their helpful comments.
dc.languageEnglishen
dc.language.isoenen
dc.titleThe faint radio source population at 15.7 GHz – II. Multi-wavelength propertiesen
dc.typeArticle
dc.description.versionThis is the final version of the article. It first appeared from Oxford University Press via http://dx.doi.org/10.1093/mnras/stv1901en
prism.endingPage4263
prism.publicationDate2015en
prism.publicationNameMonthly Notices of the Royal Astronomical Societyen
prism.startingPage4244
prism.volume453en
dc.rioxxterms.funderSTFC
dc.rioxxterms.funderSquare Kilometre Array South Africa project
dc.rioxxterms.funderSouth African National Research Foundation
dc.rioxxterms.funderEuropean Commission Research Executive Agency FP7-SPACE-2013-1 Scheme
dc.rioxxterms.projectidGrant Agreement 607254 - Herschel Extragalactic Legacy Project - HELP
rioxxterms.versionofrecord10.1093/mnras/stv1901en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2015-09-17en
dc.contributor.orcidGreen, David [0000-0003-3189-9998]
dc.identifier.eissn1365-2966
rioxxterms.typeJournal Article/Reviewen


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