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

Aaron Wilkinson; Omar Almaini; 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; Michal J. Michalowski; Alice Mortlock; Douglas Scott; Chris Simpson; James M. Simpson; Paul van der Werf; Vivienne Wild

doi:10.1093/mnras/stw2405

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

Aaron Wilkinson^*, Omar Almaini, 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, Michal J. Michalowski, Alice Mortlock, Douglas Scott, Chris SimpsonJames M. Simpson, Paul van der Werf, Vivienne Wild

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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 (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 (M_halo > 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.

Original language	English
Pages (from-to)	1380-1392
Number of pages	13
Journal	Monthly Notices of the Royal Astronomical Society
Volume	464
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stw2405
Publication status	Published - 22 Sep 2016

Keywords

Galaxies: evolution
Galaxies: formation
Galaxies: high-redshift
Galaxies: starburst
Large-scale structure of Universe

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10.1093/mnras/stw2405

https://arxiv.org/abs/1604.00018

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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., Michalowski, M. J., Mortlock, A., Scott, D., ... Wild, V. (2016). 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

@article{d17f13f7d4dd4a6bb491b5bcfb52365d,

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

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 (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.",

keywords = "Galaxies: evolution, Galaxies: formation, Galaxies: high-redshift, Galaxies: starburst, Large-scale structure of Universe",

author = "Aaron Wilkinson and Omar Almaini and Chen, {Chian Chou} and Ian Smail and Vinodiran Arumugam and Andrew Blain and Chapin, {Edward L.} and Chapman, {Scott C.} and Conselice, {Christopher J.} and Cowley, {William I.} and Dunlop, {James S.} and Duncan Farrah and James Geach and Hartley, {William G.} and Ivison, {Rob J.} and Maltby, {David T.} and Michalowski, {Michal J.} and Alice Mortlock and Douglas Scott and Chris Simpson and Simpson, {James M.} and {van der Werf}, Paul and Vivienne Wild",

year = "2016",

month = sep,

day = "22",

doi = "10.1093/mnras/stw2405",

language = "English",

volume = "464",

pages = "1380--1392",

journal = "Monthly Notices of the Royal Astronomical Society ",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "2",

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Wilkinson, A, Almaini, O, Chen, CC, Smail, I, Arumugam, V, Blain, A, Chapin, EL, Chapman, SC, Conselice, CJ, Cowley, WI, Dunlop, JS, Farrah, D, Geach, J, Hartley, WG, Ivison, RJ, Maltby, DT, Michalowski, MJ, Mortlock, A, Scott, D, Simpson, C, Simpson, JM, van der Werf, P & Wild, V 2016, '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

TY - JOUR

T1 - The SCUBA-2 Cosmology Legacy Survey

T2 - The clustering of submillimetre galaxies in the UKIDSS UDS field

AU - Wilkinson, Aaron

AU - Almaini, Omar

AU - Chen, Chian Chou

AU - Smail, Ian

AU - Arumugam, Vinodiran

AU - Blain, Andrew

AU - Chapin, Edward L.

AU - Chapman, Scott C.

AU - Conselice, Christopher J.

AU - Cowley, William I.

AU - Dunlop, James S.

AU - Farrah, Duncan

AU - Geach, James

AU - Hartley, William G.

AU - Ivison, Rob J.

AU - Maltby, David T.

AU - Michalowski, Michal J.

AU - Mortlock, Alice

AU - Scott, Douglas

AU - Simpson, Chris

AU - Simpson, James M.

AU - van der Werf, Paul

AU - Wild, Vivienne

PY - 2016/9/22

Y1 - 2016/9/22

N2 - 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.

AB - 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.

KW - Galaxies: evolution

KW - Galaxies: formation

KW - Galaxies: high-redshift

KW - Galaxies: starburst

KW - Large-scale structure of Universe

UR - http://www.scopus.com/inward/record.url?scp=85014711756&partnerID=8YFLogxK

U2 - 10.1093/mnras/stw2405

DO - 10.1093/mnras/stw2405

M3 - Article

AN - SCOPUS:85014711756

VL - 464

SP - 1380

EP - 1392

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

ER -

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

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