The SCUBA-2 Cosmology Legacy Survey: 850um maps, catalogues and number counts

J. E. Geach; J. S. Dunlop; M. Halpern; Ian 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. Jarvis; T. Jenness; S. F. Jones; A. Karim; M. Koprowski; K. K. Knudsen; 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; E. I. Robson; I. Roseboom; K. Rotermund; Douglas 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; T. M. A. Webb; C. Willott; J. A. Zavala; M. Zemcov

doi:10.1093/mnras/stw2721

The SCUBA-2 Cosmology Legacy Survey: 850um maps, catalogues and number counts

J. E. Geach, J. S. Dunlop, M. Halpern, Ian 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. ClarkeD. 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. Jarvis, T. Jenness, S. F. Jones, A. Karim, M. Koprowski, K. K. Knudsen, 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, E. I. Robson, I. Roseboom, K. Rotermund, Douglas 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, T. M. A. Webb, C. Willott, J. A. Zavala, M. Zemcov

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Abstract

We present a catalogue of nearly 3,000 submillimetre sources detected at 850um over ~5 square degrees 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 850um, probing a meaningful cosmic volume at the peak of star formation activity and increasing the sample size of submillimetre galaxies selected at 850um by an order of magnitude. We describe the wide 850um survey component of S2CLS, which covers the key extragalactic survey fields: UKIDSS-UDS, COSMOS, Akari-NEP, Extended Groth Strip, Lockman Hole North, SSA22 and GOODS-North. The average 1-sigma depth of S2CLS is 1.2 mJy/beam, approaching the SCUBA-2 850um confusion limit, which we determine to be ~0.8 mJy/beam. We measure the single dish 850um number counts to unprecedented accuracy, reducing the Poisson errors on the differential counts to approximately 4% at S_850~3mJy. With several independent fields, we investigate field-to-field variance, finding that the number counts on 0.5-1 degree scales are generally within 50% of the S2CLS mean for S_850>3mJy, with scatter consistent with the Poisson and estimated cosmic variance uncertainties, although there is a marginal (2-sigma) density enhancement in the GOODS-North field. The observed number counts are in reasonable agreement with recent phenomenological and semi-analytic models. Finally, the large solid angle of S2CLS allows us to measure the bright-end counts: at S_850>10mJy there are approximately ten sources per square degree, and we detect the distinctive up-turn in the number counts indicative of the detection of local sources of 850um emission and strongly lensed high-redshift galaxies. Here we describe the data collection and reduction procedures and present calibrated maps and a catalogue of sources; these are made publicly available.

Original language	English
Pages (from-to)	1789-1806
Journal	Monthly Notices of the Royal Astronomical Society
Volume	465
DOIs	https://doi.org/10.1093/mnras/stw2721
Publication status	Published - 10 Nov 2016

Keywords

astro-ph.GA
astro-ph.CO

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Geach et al Published VersionFinal published version, 7.66 MB

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Geach, J. E., Dunlop, J. S., Halpern, M., Smail, I., Werf, P. V. D., Alexander, D. M., Almaini, O., Aretxaga, I., Arumugam, V., Asboth, V., Banerji, M., Beanlands, J., Best, P. N., Blain, A. W., Birkinshaw, M., Chapin, E. L., Chapman, S. C., Chen, C.-C., Chrysostomou, A., ... Zemcov, M. (2016). The SCUBA-2 Cosmology Legacy Survey: 850um maps, catalogues and number counts. Monthly Notices of the Royal Astronomical Society, 465, 1789-1806. https://doi.org/10.1093/mnras/stw2721

@article{5991018a8cb94a91b07e1df7b9437c7f,

title = "The SCUBA-2 Cosmology Legacy Survey: 850um maps, catalogues and number counts",

abstract = "We present a catalogue of nearly 3,000 submillimetre sources detected at 850um over ~5 square degrees 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 850um, probing a meaningful cosmic volume at the peak of star formation activity and increasing the sample size of submillimetre galaxies selected at 850um by an order of magnitude. We describe the wide 850um survey component of S2CLS, which covers the key extragalactic survey fields: UKIDSS-UDS, COSMOS, Akari-NEP, Extended Groth Strip, Lockman Hole North, SSA22 and GOODS-North. The average 1-sigma depth of S2CLS is 1.2 mJy/beam, approaching the SCUBA-2 850um confusion limit, which we determine to be ~0.8 mJy/beam. We measure the single dish 850um number counts to unprecedented accuracy, reducing the Poisson errors on the differential counts to approximately 4% at S_850~3mJy. With several independent fields, we investigate field-to-field variance, finding that the number counts on 0.5-1 degree scales are generally within 50% of the S2CLS mean for S_850>3mJy, with scatter consistent with the Poisson and estimated cosmic variance uncertainties, although there is a marginal (2-sigma) density enhancement in the GOODS-North field. The observed number counts are in reasonable agreement with recent phenomenological and semi-analytic models. Finally, the large solid angle of S2CLS allows us to measure the bright-end counts: at S_850>10mJy there are approximately ten sources per square degree, and we detect the distinctive up-turn in the number counts indicative of the detection of local sources of 850um emission and strongly lensed high-redshift galaxies. Here we describe the data collection and reduction procedures and present calibrated maps and a catalogue of sources; these are made publicly available.",

keywords = "astro-ph.GA, astro-ph.CO",

author = "Geach, {J. E.} and Dunlop, {J. S.} and M. Halpern and Ian Smail and Werf, {P. van der} and Alexander, {D. M.} and O. Almaini and I. Aretxaga and V. Arumugam and V. Asboth and M. Banerji and J. Beanlands and Best, {P. N.} and Blain, {A. W.} and M. Birkinshaw and Chapin, {E. L.} and Chapman, {S. C.} and C.-C. Chen and A. Chrysostomou and C. Clarke and Clements, {D. L.} and C. Conselice and Coppin, {K. E. K.} and Cowley, {W. I.} and Danielson, {A. L. R.} and S. Eales and Edge, {A. C.} and D. Farrah and A. Gibb and Harrison, {C. M.} and Hine, {N. K.} and D. Hughes and Ivison, {R. J.} and M. Jarvis and T. Jenness and Jones, {S. F.} and A. Karim and M. Koprowski and Knudsen, {K. K.} and Lacey, {C. G.} and T. Mackenzie and G. Marsden and K. McAlpine and R. McMahon and R. Meijerink and Michalowski, {M. J.} and Oliver, {S. J.} and Page, {M. J.} and Peacock, {J. A.} and D. Rigopoulou and Robson, {E. I.} and I. Roseboom and K. Rotermund and Douglas Scott and S. Serjeant and C. Simpson and Simpson, {J. M.} and Smith, {D. J. B.} and M. Spaans and F. Stanley and Stevens, {J. A.} and Swinbank, {A. M.} and T. Targett and Thomson, {A. P.} and E. Valiante and Webb, {T. M. A.} and C. Willott and Zavala, {J. A.} and M. Zemcov",

note = "This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. {\textcopyright} 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.",

year = "2016",

month = nov,

day = "10",

doi = "10.1093/mnras/stw2721",

language = "English",

volume = "465",

pages = "1789--1806",

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

issn = "0035-8711",

publisher = "Oxford University Press (OUP)",

}

Geach, JE, Dunlop, JS, Halpern, M, Smail, I, Werf, PVD, Alexander, DM, Almaini, O, Aretxaga, I, Arumugam, V, Asboth, V, Banerji, M, Beanlands, J, Best, PN, Blain, AW, Birkinshaw, M, Chapin, EL, Chapman, SC, Chen, C-C, Chrysostomou, A, Clarke, C, Clements, DL, Conselice, C, Coppin, KEK, Cowley, WI, Danielson, ALR, Eales, S, Edge, AC, Farrah, D, Gibb, A, Harrison, CM, Hine, NK, Hughes, D, Ivison, RJ, Jarvis, M, Jenness, T, Jones, SF, Karim, A, Koprowski, M, Knudsen, KK, Lacey, CG, Mackenzie, T, Marsden, G, McAlpine, K, McMahon, R, Meijerink, R, Michalowski, MJ, Oliver, SJ, Page, MJ, Peacock, JA, Rigopoulou, D, Robson, EI, Roseboom, I, Rotermund, K, Scott, D, Serjeant, S, Simpson, C, Simpson, JM, Smith, DJB, Spaans, M, Stanley, F, Stevens, JA, Swinbank, AM, Targett, T, Thomson, AP, Valiante, E, Webb, TMA, Willott, C, Zavala, JA & Zemcov, M 2016, 'The SCUBA-2 Cosmology Legacy Survey: 850um maps, catalogues and number counts', Monthly Notices of the Royal Astronomical Society, vol. 465, pp. 1789-1806. https://doi.org/10.1093/mnras/stw2721

TY - JOUR

T1 - The SCUBA-2 Cosmology Legacy Survey

T2 - 850um maps, catalogues and number counts

AU - Geach, J. E.

AU - Dunlop, J. S.

AU - Halpern, M.

AU - Smail, Ian

AU - Werf, P. van der

AU - Alexander, D. M.

AU - Almaini, O.

AU - Aretxaga, I.

AU - Arumugam, V.

AU - Asboth, V.

AU - Banerji, M.

AU - Beanlands, J.

AU - Best, P. N.

AU - Blain, A. W.

AU - Birkinshaw, M.

AU - Chapin, E. L.

AU - Chapman, S. C.

AU - Chen, C.-C.

AU - Chrysostomou, A.

AU - Clarke, C.

AU - Clements, D. L.

AU - Conselice, C.

AU - Coppin, K. E. K.

AU - Cowley, W. I.

AU - Danielson, A. L. R.

AU - Eales, S.

AU - Edge, A. C.

AU - Farrah, D.

AU - Gibb, A.

AU - Harrison, C. M.

AU - Hine, N. K.

AU - Hughes, D.

AU - Ivison, R. J.

AU - Jarvis, M.

AU - Jenness, T.

AU - Jones, S. F.

AU - Karim, A.

AU - Koprowski, M.

AU - Knudsen, K. K.

AU - Lacey, C. G.

AU - Mackenzie, T.

AU - Marsden, G.

AU - McAlpine, K.

AU - McMahon, R.

AU - Meijerink, R.

AU - Michalowski, M. J.

AU - Oliver, S. J.

AU - Page, M. J.

AU - Peacock, J. A.

AU - Rigopoulou, D.

AU - Robson, E. I.

AU - Roseboom, I.

AU - Rotermund, K.

AU - Scott, Douglas

AU - Serjeant, S.

AU - Simpson, C.

AU - Simpson, J. M.

AU - Smith, D. J. B.

AU - Spaans, M.

AU - Stanley, F.

AU - Stevens, J. A.

AU - Swinbank, A. M.

AU - Targett, T.

AU - Thomson, A. P.

AU - Valiante, E.

AU - Webb, T. M. A.

AU - Willott, C.

AU - Zavala, J. A.

AU - Zemcov, M.

N1 - This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.

PY - 2016/11/10

Y1 - 2016/11/10

N2 - We present a catalogue of nearly 3,000 submillimetre sources detected at 850um over ~5 square degrees 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 850um, probing a meaningful cosmic volume at the peak of star formation activity and increasing the sample size of submillimetre galaxies selected at 850um by an order of magnitude. We describe the wide 850um survey component of S2CLS, which covers the key extragalactic survey fields: UKIDSS-UDS, COSMOS, Akari-NEP, Extended Groth Strip, Lockman Hole North, SSA22 and GOODS-North. The average 1-sigma depth of S2CLS is 1.2 mJy/beam, approaching the SCUBA-2 850um confusion limit, which we determine to be ~0.8 mJy/beam. We measure the single dish 850um number counts to unprecedented accuracy, reducing the Poisson errors on the differential counts to approximately 4% at S_850~3mJy. With several independent fields, we investigate field-to-field variance, finding that the number counts on 0.5-1 degree scales are generally within 50% of the S2CLS mean for S_850>3mJy, with scatter consistent with the Poisson and estimated cosmic variance uncertainties, although there is a marginal (2-sigma) density enhancement in the GOODS-North field. The observed number counts are in reasonable agreement with recent phenomenological and semi-analytic models. Finally, the large solid angle of S2CLS allows us to measure the bright-end counts: at S_850>10mJy there are approximately ten sources per square degree, and we detect the distinctive up-turn in the number counts indicative of the detection of local sources of 850um emission and strongly lensed high-redshift galaxies. Here we describe the data collection and reduction procedures and present calibrated maps and a catalogue of sources; these are made publicly available.

AB - We present a catalogue of nearly 3,000 submillimetre sources detected at 850um over ~5 square degrees 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 850um, probing a meaningful cosmic volume at the peak of star formation activity and increasing the sample size of submillimetre galaxies selected at 850um by an order of magnitude. We describe the wide 850um survey component of S2CLS, which covers the key extragalactic survey fields: UKIDSS-UDS, COSMOS, Akari-NEP, Extended Groth Strip, Lockman Hole North, SSA22 and GOODS-North. The average 1-sigma depth of S2CLS is 1.2 mJy/beam, approaching the SCUBA-2 850um confusion limit, which we determine to be ~0.8 mJy/beam. We measure the single dish 850um number counts to unprecedented accuracy, reducing the Poisson errors on the differential counts to approximately 4% at S_850~3mJy. With several independent fields, we investigate field-to-field variance, finding that the number counts on 0.5-1 degree scales are generally within 50% of the S2CLS mean for S_850>3mJy, with scatter consistent with the Poisson and estimated cosmic variance uncertainties, although there is a marginal (2-sigma) density enhancement in the GOODS-North field. The observed number counts are in reasonable agreement with recent phenomenological and semi-analytic models. Finally, the large solid angle of S2CLS allows us to measure the bright-end counts: at S_850>10mJy there are approximately ten sources per square degree, and we detect the distinctive up-turn in the number counts indicative of the detection of local sources of 850um emission and strongly lensed high-redshift galaxies. Here we describe the data collection and reduction procedures and present calibrated maps and a catalogue of sources; these are made publicly available.

KW - astro-ph.GA

KW - astro-ph.CO

U2 - 10.1093/mnras/stw2721

DO - 10.1093/mnras/stw2721

M3 - Article

SN - 0035-8711

VL - 465

SP - 1789

EP - 1806

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

The SCUBA-2 Cosmology Legacy Survey: 850um maps, catalogues and number counts

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