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The SCUBA-2 Cosmology Legacy Survey : the clustering of submillimetre galaxies in the UKIDSS UDS field

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Date
01/01/2017
Author
Wilkinson, Aaron
Almaini, Omar
Chen, Chian-Chou
Smail, Ian
Arumugam, Vinodiran
Blain, Andrew
Chapin, Edward L.
Chapman, Scott C.
Conselice, Christopher J.
Cowley, William I.
Dunlop, James S.
Farrah, Duncan
Geach, James
Hartley, William G.
Ivison, Rob J.
Maltby, David T.
Michałowski, Michał J.
Mortlock, Alice
Scott, Douglas
Simpson, Chris
Simpson, James M.
van der Werf, Paul
Wild, Vivienne
Funder
European Research Council
Grant ID
ERC-2012-StG-20111012
Keywords
Cosmology: large-scale structure
Galaxies: formation
Galaxies: evolution
Galaxies: high redshift
Galaxies: starburst
QB Astronomy
QC Physics
NDAS
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Abstract
Submillimetre galaxies (SMGs) are among the most luminous dusty galaxies in the Universe, but their true nature remains unclear; are SMGs the progenitors of the massive elliptical galaxies we see in the local Universe, or are they just a short-lived phase among more typical star-forming galaxies? To explore this problem further, we investigate the clustering of SMGs identified in the SCUBA-2 Cosmology Legacy Survey. We use a catalogue of submillimetre (850μm) source identifications derived using a combination of radio counterparts and colour/IR selection to analyse a sample of 914 SMGs in the UKIDSS UltraDeep Survey (UDS), making this the largest high redshift sample of these galaxies to date. Using angular cross-correlation techniques, we estimate the halo masses for this large sample of SMGs and compare them with passive and star-forming galaxies selected in the same field. We find that SMGs, on average, occupy high-mass dark matter halos(Mhalo >1013 M☉) at redshifts z > 2.5, consistent with being the progenitors of massive quiescent galaxies in present-day galaxy clusters. We also find evidence of downsizing, in which SMG activity shifts to lower mass halos at lower redshifts. Interms of their clustering and halo masses, SMGs appear to be consistent with other star-forming galaxies at a given redshift.
Citation
Wilkinson , A , Almaini , O , Chen , C-C , Smail , I , Arumugam , V , Blain , A , Chapin , E L , Chapman , S C , Conselice , C J , Cowley , W I , Dunlop , J S , Farrah , D , Geach , J , Hartley , W G , Ivison , R J , Maltby , D T , Michałowski , M J , Mortlock , A , Scott , D , Simpson , C , Simpson , J M , van der Werf , P & Wild , V 2017 , ' The SCUBA-2 Cosmology Legacy Survey : the clustering of submillimetre galaxies in the UKIDSS UDS field ' , Monthly Notices of the Royal Astronomical Society , vol. 464 , no. 2 , pp. 1380-1392 . https://doi.org/10.1093/mnras/stw2405
Publication
Monthly Notices of the Royal Astronomical Society
Status
Peer reviewed
DOI
https://doi.org/10.1093/mnras/stw2405
ISSN
0035-8711
Type
Journal article
Rights
© 2016, the Author(s). This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at academic.oup.com/mnras / https://doi.org/10.1093/mnras/stw2405
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URL
https://arxiv.org/pdf/1604.00018v2
http://adsabs.harvard.edu/abs/2016arXiv160400018W
URI
http://hdl.handle.net/10023/10206

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