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dc.contributor.authorKoprowski, M. P.
dc.contributor.authorDunlop, James S.
dc.contributor.authorMichałowski, Michał J.
dc.contributor.authorCoppin, K. E. K.
dc.contributor.authorGeach, J. E.
dc.contributor.authorMcLure, Ross J.
dc.contributor.authorScott, D.
dc.contributor.authorvan der Werf, P.
dc.date.accessioned2017-11-14T17:55:12Z
dc.date.available2017-11-14T17:55:12Z
dc.date.issued2017-11-11
dc.identifier.citationKoprowski , M P , Dunlop , J S , Michałowski , M J , Coppin , K E K , Geach , J E , McLure , R J , Scott , D & van der Werf , P 2017 , ' The evolving far-IR galaxy luminosity function and dust-obscured star-formation rate density out to z~5 ' , Monthly Notices of the Royal Astronomical Society , vol. 471 , no. 4 , pp. 4155-4169 . https://doi.org/10.1093/mnras/stx1843
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 12417824
dc.identifier.otherPURE UUID: 7cb30698-5248-4518-a06a-8e7ec7baa8da
dc.identifier.otherArXiv: http://arxiv.org/abs/1706.00426v1
dc.identifier.otherScopus: 85041460883
dc.identifier.otherORCID: /0000-0002-0729-2988/work/41650800
dc.identifier.urihttp://hdl.handle.net/2299/19517
dc.descriptionThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. ©: 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
dc.description.abstractWe present a new measurement of the evolving galaxy far-IR luminosity function (LF) extending out to redshifts z~5, with resulting implications for the level of dust-obscured star-formation density in the young Universe. To achieve this we have exploited recent advances in sub-mm/mm imaging with SCUBA-2 on the James Clerk Maxwell Telescope (JCMT) and the Atacama Large Millimeter/Submillimeter Array (ALMA), which together provide unconfused imaging with sufficient dynamic range to provide meaningful coverage of the luminosity-redshift plane out to z>4. Our results support previous indications that the faint-end slope of the far-IR LF is sufficiently flat that comoving luminosity-density is dominated by bright objects (~L*). However, we find that the number-density/luminosity of such sources at high redshifts has been severely over-estimated by studies that have attempted to push the highly-confused Herschel SPIRE surveys beyond z~2. Consequently we confirm recent reports that cosmic star-formation density is dominated by UV-visible star formation at z>4. Using both direct (1/Vmax) and maximum likelihood determinations of the LF, we find that its high-redshift evolution is well characterized by continued positive luminosity evolution coupled with negative density evolution (with increasing redshift). This explains why bright sub-mm sources continue to be found at z>5, even though their integrated contribution to cosmic star-formation density at such early times is very small. The evolution of the far-IR galaxy LF thus appears similar in form to that already established for active galactic nuclei, possibly reflecting a similar dependence on the growth of galaxy mass.en
dc.format.extent15
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.rightsOpen
dc.subjectastro-ph.GA
dc.titleThe evolving far-IR galaxy luminosity function and dust-obscured star-formation rate density out to z~5en
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dc.description.versiontypeFinal Published version
dcterms.dateAccepted2017-11-11
rioxxterms.versionVoR
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/stx1843
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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