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

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.; Micha?owski, Micha? J.; Mortlock, Alice; Scott, Douglas; Simpson, Chris; Simpson, James M.; van der Werf, Paul; Wild, Vivienne

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


Authors

Aaron Wilkinson

OMAR ALMAINI omar.almaini@nottingham.ac.uk
Professor of Astrophysics

Chian Chou Chen

Ian Smail

Vinodiran Arumugam

Andrew Blain

Edward L. Chapin

Scott C. Chapman

Christopher J. Conselice

William I. Cowley

James S. Dunlop

Duncan Farrah

James Geach

William G. Hartley

Rob J. Ivison

David T. Maltby

Micha? J. Micha?owski

Alice Mortlock

Douglas Scott

Chris Simpson

James M. Simpson

Paul van der Werf

Vivienne Wild



Abstract

© 2016 The Authors. 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 (850 μm) source identifications derived using a combination of radio counterparts and colour/infrared selection to analyse a sample of 610 SMG counterparts in the United Kingdom Infrared Telescope (UKIRT) Infrared Deep Survey (UKIDSS) Ultra Deep 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 haloes (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 haloes at lower redshifts. In terms 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., …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, 464(2), 1380-1392. https://doi.org/10.1093/mnras/stw2405

Journal Article Type Article
Acceptance Date Sep 21, 2016
Online Publication Date Sep 22, 2016
Publication Date Jan 1, 2017
Deposit Date Jan 13, 2017
Publicly Available Date Mar 29, 2024
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 464
Issue 2
Pages 1380-1392
DOI https://doi.org/10.1093/mnras/stw2405
Keywords galaxies: evolution ; galaxies: formation ; galaxies: high-redshift ; galaxies: starburst ; large-scale structure of Universe.
Public URL https://nottingham-repository.worktribe.com/output/830980
Publisher URL https://academic.oup.com/mnras/article/464/2/1380/2282841/The-SCUBA-2-Cosmology-Legacy-Survey-the-clustering

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