The SCUBA-2 Cosmology Legacy Survey: 850 mu m maps, catalogues and number counts
Journal article, 2017

We present a catalogue of similar to 3000 submillimetre sources detected (>= 3.5 sigma) at 850 mu m over similar to 5 deg(2) surveyed as part of the James Clerk Maxwell Telescope (JCMT) SCUBA-2 Cosmology Legacy Survey (S2CLS). This is the largest survey of its kind at 850 mu m, increasing the sample size of 850 mu m selected submillimetre galaxies by an order of magnitude. The wide 850 mu m survey component of S2CLS covers the extragalactic fields: UKIDSS-UDS, COSMOS, Akari-NEP, Extended Groth Strip, Lockman Hole North, SSA22 and GOODS-North. The average 1s depth of S2CLS is 1.2 mJy beam(-1), approaching the SCUBA-2 850 mu m confusion limit, which we determine to be sigma(c) approximate to 0.8 mJy beam(-1). We measure the 850 mu m number counts, reducing the Poisson errors on the differential counts to approximately 4 per cent at S-850 approximate to 3 mJy. With several independent fields, we investigate field-to-field variance, finding that the number counts on 0.5 degrees-1 degrees scales are generally within 50 per cent of the S2CLS mean for S-850 > 3 mJy, with scatter consistent with the Poisson and estimated cosmic variance uncertainties, although there is a marginal (2 sigma) density enhancement in GOODS-North. The observed counts are in reasonable agreement with recent phenomenological and semi-analytic models, although determining the shape of the faint-end slope (S-850 < 3 mJy) remains a key test. The large solid angle of S2CLS allows us to measure the bright-end counts: at S-850 > 10 mJy there are approximately 10 sources per square degree, and we detect the distinctive up-turn in the number counts indicative of the detection of local sources of 850 mu m emission

submillimeter galaxy population

degree extragalactic

clerk maxwell telescope

star-forming galaxies

14 hour field

molecular gas

deep field-south

galaxies: high-redshift



bolometer camera



cosmology: observations

galaxies: evolution

survey alma



J.E. Geach

J.S. Dunlop

M. Halpern

I. Smail

P. van der Werf

D. M. Alexander

O. Almaini

I. Aretxaga

V. Arumugam

V. Asboth

M. Banerji

J. Beanlands

P. N. Best

A.W. Blain

M. Birkinshaw

E. L. Chapin

S. C. Chapman

C. C. Chen

A. Chrysostomou

C. Clarke

D. L. Clements

C. Conselice

K. E. K. Coppin

W. I. Cowley

A. L. R. Danielson

S. Eales

A. C. Edge

D. Farrah

A. Gibb

C. M. Harrison

N. K. Hine

D. Hughes

R. J. Ivison

M.J. Jarvis

T. Jenness

Suzy Jones

Chalmers, Earth and Space Sciences, Radio Astronomy and Astrophysics

A. Karim

M. Koprowski

Kirsten Kraiberg Knudsen

Chalmers, Earth and Space Sciences, Radio Astronomy and Astrophysics

C. G. Lacey

T. Mackenzie

G. Marsden

K. McAlpine

R. McMahon

R. Meijerink

M. J. Michalowski

S. J. Oliver

M. J. Page

J. A. Peacock

D. Rigopoulou

I. Robson

I. Roseboom

K. Rotermund

D. Scott

S. Serjeant

C. Simpson

J. M. Simpson

D. J. B. Smith

M. Spaans

F. Stanley

J. A. Stevens

A. M. Swinbank

T. Targett

A. P. Thomson

E. Valiante

D. A. Wake

T.M.A. Webb

C. Willott

J. A. Zavala

M. Zemcov

Monthly Notices of the Royal Astronomical Society

0035-8711 (ISSN) 1365-2966 (eISSN)

Vol. 465 2 1789-1806

Subject Categories

Astronomy, Astrophysics and Cosmology


Basic sciences



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