dc.contributor.author | Koprowski, M. P. | |
dc.contributor.author | Dunlop, James S. | |
dc.contributor.author | Michałowski, Michał J. | |
dc.contributor.author | Coppin, K. E. K. | |
dc.contributor.author | Geach, J. E. | |
dc.contributor.author | McLure, Ross J. | |
dc.contributor.author | Scott, D. | |
dc.contributor.author | van der Werf, P. | |
dc.date.accessioned | 2017-11-14T17:55:12Z | |
dc.date.available | 2017-11-14T17:55:12Z | |
dc.date.issued | 2017-11-11 | |
dc.identifier.citation | Koprowski , 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.issn | 0035-8711 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/1706.00426v1 | |
dc.identifier.other | ORCID: /0000-0002-0729-2988/work/41650800 | |
dc.identifier.uri | http://hdl.handle.net/2299/19517 | |
dc.description | This 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.abstract | We 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.extent | 15 | |
dc.format.extent | 2205163 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.subject | astro-ph.GA | |
dc.title | The evolving far-IR galaxy luminosity function and dust-obscured star-formation rate density out to z~5 | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1093/mnras/stx1843 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |