The faint radio source population at 15.7 GHz - II. Multi-wavelength properties

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dc.contributor.authorWhittam, I.H.
dc.contributor.authorRiley, J.M.
dc.contributor.authorGreen, D.A.
dc.contributor.authorJarvis, Matt
dc.contributor.authorVaccari, M.
dc.date.accessioned2016-08-12T10:40:12Z
dc.date.available2016-08-12T10:40:12Z
dc.date.issued2015
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.en_US
dc.description.accreditationScopusen_US
dc.identifier.citationWhittam, I. H. et al. (2015). The faint radio source population at 15.7 GHz - II. Multi-wavelength properties. Monthly Notices of the Royal Astronomical Society, 2(2): 1-21en_US
dc.identifier.issn0035-8711
dc.identifier.urihttp://hdl.handle.net/10566/2383
dc.language.isoenen_US
dc.privacy.showsubmitterFALSE
dc.publisherOxford University Press
dc.rights.urihttp://www.sherpa.ac.uk/romeo/issn/0035-8711/
dc.source.urihttp://dx.doi.org/10.1093/mnras/stv1901
dc.status.ispeerreviewedTRUE
dc.subjectGalaxiesen_US
dc.subjectRadio continuumen_US
dc.subjectSpitzer Extragalactic Representative Volume Surveyen_US
dc.subjectSpitzer Wide-area Infrared Extragalactic surveyen_US
dc.subjectUnited Kingdom Infrared Telescope Infrared Deep Sky Surveyen_US
dc.subjectSquare Kilometre Array (SKA)en_US
dc.titleThe faint radio source population at 15.7 GHz - II. Multi-wavelength propertiesen_US
dc.typeArticleen_US

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