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dc.contributor.authorWhite, S. V.
dc.contributor.authorJarvis, M.J.
dc.contributor.authorHaussler, B.
dc.contributor.authorMaddox, N.
dc.date.accessioned2016-03-16T10:14:22Z
dc.date.available2016-03-16T10:14:22Z
dc.date.issued2015-04-11
dc.identifier.citationWhite , S V , Jarvis , M J , Haussler , B & Maddox , N 2015 , ' Radio-quiet quasars in the VIDEO survey : evidence for AGN-powered radio emission at S-1.4 GHz <1 mJy ' , Monthly Notices of the Royal Astronomical Society , vol. 448 , no. 3 , pp. 2665-2686 . https://doi.org/10.1093/mnras/stv134
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 9642128
dc.identifier.otherPURE UUID: ddf03abd-86d7-4927-8de8-239813dee795
dc.identifier.otherScopus: 84940111787
dc.identifier.urihttp://hdl.handle.net/2299/16787
dc.description.abstractUnderstanding the interplay between black-hole accretion and star formation, and how to disentangle the two, is crucial to our understanding of galaxy formation and evolution. To investigate, we use a combination of optical and near-infrared photometry to select a sample of 74 quasars from the VISTA Deep Extragalactic Observations (VIDEO) survey, over 1 deg2. The depth of VIDEO allows us to study very low accretion rates and/or lower-mass black holes, and 26 per cent of the candidate quasar sample has been spectroscopically confirmed. We use a radio-stacking technique to sample below the nominal flux-density threshold using data from the Very Large Array at 1.4 GHz and find, in agreement with other work, that a power-law fit to the quasar-related radio source counts is inadequate at low flux density. By comparing with a control sample of galaxies (where we match in terms of stellar mass), and by estimating the star formation rate, we suggest that this radio emission is predominantly caused by accretion activity rather than star-formation activityen
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsOpen
dc.titleRadio-quiet quasars in the VIDEO survey : evidence for AGN-powered radio emission at S-1.4 GHz<1 mJyen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2015-04-11
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stv134
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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