dc.contributor.author | McAlpine, Kim | |
dc.contributor.author | Jarvis, M.J. | |
dc.date.accessioned | 2011-09-15T12:01:10Z | |
dc.date.available | 2011-09-15T12:01:10Z | |
dc.date.issued | 2011-05 | |
dc.identifier.citation | McAlpine , K & Jarvis , M J 2011 , ' The evolution of radio sources in the UKIDSS-DXS-XMM-LSS field ' , Monthly Notices of the Royal Astronomical Society , vol. 413 , no. 2 , pp. 1054-1060 . https://doi.org/10.1111/j.1365-2966.2010.18191.x | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.uri | http://hdl.handle.net/2299/6447 | |
dc.description | The definitive version can be found at: http://onlinelibrary.wiley.com/ Copyright Royal Astronomical Society | |
dc.description.abstract | We investigate the cosmic evolution of low-luminosity (L-1.4 GHz < 1025 W Hz-1 sr-1) radio sources in the XMM Large Scale Structure Survey (XMM-LSS) field. We match low-frequency-selected (610-MHz) radio sources in the XMM-LSS field with near-infrared K-band observations over the same field from the UKIRT Infrared Deep Sky Survey. We use both the mean V/V-max statistic and the radio luminosity function of these matched sources to quantify the evolution of the comoving space density of the low-luminosity radio sources in our sample. Our results indicate that the low-luminosity sources evolve differently from their high-luminosity counterparts out to a redshift of z similar to 0.8. The derived luminosity function is consistent with an increase in the comoving space density of low-luminosity sources by a factor of similar to 1.5 at z = 0.8. We show that the use of the K-z diagram for the radio source population, although coarser than a full photometric redshift analysis, produces consistent results with previous studies using approximately > 10 band photometry. This offers a promising method for conducting similar analyses over the whole sky with future near- and mid-infrared surveys. | en |
dc.format.extent | 7 | |
dc.format.extent | 843755 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.subject | galaxies: active | |
dc.subject | galaxies: luminosity function, mass function | |
dc.subject | radio continuum: galaxies | |
dc.title | The evolution of radio sources in the UKIDSS-DXS-XMM-LSS field | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Science & Technology Research Institute | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.description.status | Peer reviewed | |
dc.date.embargoedUntil | 2011-11-01 | |
rioxxterms.versionofrecord | 10.1111/j.1365-2966.2010.18191.x | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |