The SCUBA-2 Cosmology Legacy Survey: 850 μm 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

cosmology: observations

catalogues

bolometer camera

submillimeter galaxy population

star-forming galaxies

galaxies: evolution

survey alma

high-redshift

galaxies: high-redshift

survey

deep field-south

14 hour field

clerk maxwell telescope

molecular gas

degree extragalactic

resolves

surveys

Author

J.E. Geach

University of Hertfordshire

J.S. Dunlop

Royal Observatory

M. Halpern

University of British Columbia (UBC)

I. Smail

Durham University

P. van der Werf

Leiden University

D. M. Alexander

Durham University

O. Almaini

University of Nottingham

I. Aretxaga

National Institute of Astrophysics, Optics and Electronics

V. Arumugam

Royal Observatory

European Southern Observatory (ESO)

V. Asboth

University of British Columbia (UBC)

M. Banerji

University of Cambridge

J. Beanlands

Saint Mary's University

P. N. Best

Royal Observatory

A.W. Blain

University Of Leicester

M. Birkinshaw

University of Bristol

E. L. Chapin

National Research Council Canada

S. C. Chapman

Dalhousie University

C. C. Chen

Durham University

A. Chrysostomou

University of Manchester

C. Clarke

University of Sussex

D. L. Clements

Imperial College London

C. Conselice

University of Nottingham

K. E. K. Coppin

University of Hertfordshire

W. I. Cowley

Durham University

A. L. R. Danielson

Durham University

S. Eales

Cardiff University

A. C. Edge

Durham University

D. Farrah

Virginia Polytechnic Institute and State University

A. Gibb

University of British Columbia (UBC)

C. M. Harrison

Durham University

N. K. Hine

University of Hertfordshire

D. Hughes

National Institute of Astrophysics, Optics and Electronics

R. J. Ivison

European Southern Observatory (ESO)

Royal Observatory

M.J. Jarvis

University of Oxford

University of the Western Cape

T. Jenness

University of British Columbia (UBC)

Suzy Jones

Chalmers, Earth and Space Sciences, Radio Astronomy and Astrophysics

A. Karim

University of Bonn

M. Koprowski

University of Hertfordshire

Kirsten Kraiberg Knudsen

Chalmers, Earth and Space Sciences, Radio Astronomy and Astrophysics

C. G. Lacey

Durham University

T. Mackenzie

University of British Columbia (UBC)

G. Marsden

University of British Columbia (UBC)

K. McAlpine

University of the Western Cape

R. McMahon

European Southern Observatory (ESO)

R. Meijerink

Leiden University

University of Groningen

M. J. Michalowski

University of British Columbia (UBC)

S. J. Oliver

University of Sussex

M. J. Page

University College London (UCL)

J. A. Peacock

Royal Observatory

D. Rigopoulou

University of Oxford

Rutherford Appleton Laboratory

I. Robson

Royal Observatory

I. Roseboom

Royal Observatory

K. Rotermund

Dalhousie University

D. Scott

University of British Columbia (UBC)

S. Serjeant

Open University

University of British Columbia (UBC)

C. Simpson

Gemini Observatory North

J. M. Simpson

Royal Observatory

D. J. B. Smith

University of Hertfordshire

M. Spaans

University of Groningen

F. Stanley

Durham University

J. A. Stevens

University of Hertfordshire

A. M. Swinbank

Durham University

T. Targett

Sonoma State University

A. P. Thomson

Durham University

E. Valiante

Cardiff University

D. A. Wake

Open University

University of Wisconsin Madison

T.M.A. Webb

McGill University

C. Willott

National Research Council Canada

J. A. Zavala

National Institute of Astrophysics, Optics and Electronics

M. Zemcov

Jet Propulsion Laboratory, California Institute of Technology

Rochester Institute of Technology

Monthly Notices of the Royal Astronomical Society

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

Vol. 465 2 1789-1806

Subject Categories

Astronomy, Astrophysics and Cosmology

Roots

Basic sciences

DOI

10.1093/mnras/stw2721

More information

Latest update

2/20/2019