University of Hertfordshire

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An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field : number counts of submillimeter galaxies. / Stach, S. M.; Smail, I.; Swinbank, A. M.; Geach, J. E.; An, F. X.; Almaini, O.; Arumugam, V.; Blain, A. W.; Chapman, S. C.; Conselice, C. J.; Cooke, E. A.; Coppin, K. E. K.; Dunlop, J. S.; Farrah, D.; Gullberg, B.; Hartley, W.; Ivison, R. J.; Maltby, D. T.; Michałowski, M. J.; Scott, D.; Wardlow, J. L.; Werf, P. van der.

In: The Astrophysical Journal, Vol. 860, No. 2, 161, 25.06.2018.

Research output: Contribution to journalArticlepeer-review

Harvard

Stach, SM, Smail, I, Swinbank, AM, Geach, JE, An, FX, Almaini, O, Arumugam, V, Blain, AW, Chapman, SC, Conselice, CJ, Cooke, EA, Coppin, KEK, Dunlop, JS, Farrah, D, Gullberg, B, Hartley, W, Ivison, RJ, Maltby, DT, Michałowski, MJ, Scott, D, Wardlow, JL & Werf, PVD 2018, 'An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: number counts of submillimeter galaxies', The Astrophysical Journal, vol. 860, no. 2, 161. https://doi.org/10.3847/1538-4357/aac5e5

APA

Stach, S. M., Smail, I., Swinbank, A. M., Geach, J. E., An, F. X., Almaini, O., Arumugam, V., Blain, A. W., Chapman, S. C., Conselice, C. J., Cooke, E. A., Coppin, K. E. K., Dunlop, J. S., Farrah, D., Gullberg, B., Hartley, W., Ivison, R. J., Maltby, D. T., Michałowski, M. J., ... Werf, P. V. D. (2018). An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: number counts of submillimeter galaxies. The Astrophysical Journal, 860(2), [161]. https://doi.org/10.3847/1538-4357/aac5e5

Vancouver

Author

Stach, S. M. ; Smail, I. ; Swinbank, A. M. ; Geach, J. E. ; An, F. X. ; Almaini, O. ; Arumugam, V. ; Blain, A. W. ; Chapman, S. C. ; Conselice, C. J. ; Cooke, E. A. ; Coppin, K. E. K. ; Dunlop, J. S. ; Farrah, D. ; Gullberg, B. ; Hartley, W. ; Ivison, R. J. ; Maltby, D. T. ; Michałowski, M. J. ; Scott, D. ; Wardlow, J. L. ; Werf, P. van der. / An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field : number counts of submillimeter galaxies. In: The Astrophysical Journal. 2018 ; Vol. 860, No. 2.

Bibtex

@article{4eee9142c4374c1c922fea539fa42989,
title = "An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field: number counts of submillimeter galaxies",
abstract = "We report the first results of AS2UDS, an 870 μm continuum survey with the Atacama Large Millimeter/Submillimeter Array (ALMA) of a total area of ∼50 arcmin 2 comprising a complete sample of 716 submillimeter sources drawn from the SCUBA-2 Cosmology Legacy Survey (S2CLS) map of the UKIDSS/UDS field. The S2CLS parent sample covers a 0.96 degree 2 field at σ 850 = 0.90 ± 0.05 mJy beam -1. Our deep, high-resolution ALMA observations with σ 870 ∼ 0.25 mJy and a 0.″15-0.″30 FWHM synthesized beam, provide precise locations for 695 submillimeter galaxies (SMGs) responsible for the submillimeter emission corresponding to 606 sources in the low-resolution, single-dish map. We measure the number counts of SMGs brighter than S 870 ≥ 4 mJy, free from the effects of blending and show that the normalization of the counts falls by 28% ± 2% in comparison with the SCUBA-2 published counts, but that the shape remains unchanged. We determine that % of the brighter single-dish sources with S 850 ≥ 9 mJy consist of a blend of two or more ALMA-detectable SMGs brighter than S 870 ∼ 1 mJy (corresponding to a galaxy with a total-infrared luminosity of L IR 10 12 L o), in comparison with 28% ± 2% for the single-dish sources at S 850 ≥ 5 mJy. Using the 46 single-dish submillimeter sources that contain two or more ALMA-detected SMGs with photometric redshifts, we show that there is a significant statistical excess of pairs of SMGs with similar redshifts (<1% probability of occurring by chance), suggesting that at least 30% of these blends arise from physically associated pairs of SMGs. ",
keywords = "galaxies: high-redshift, galaxies: starburst",
author = "Stach, {S. M.} and I. Smail and Swinbank, {A. M.} and Geach, {J. E.} and An, {F. X.} and O. Almaini and V. Arumugam and Blain, {A. W.} and Chapman, {S. C.} and Conselice, {C. J.} and Cooke, {E. A.} and Coppin, {K. E. K.} and Dunlop, {J. S.} and D. Farrah and B. Gullberg and W. Hartley and Ivison, {R. J.} and Maltby, {D. T.} and Micha{\l}owski, {M. J.} and D. Scott and Wardlow, {J. L.} and Werf, {P. van der}",
note = "11 pages, 4 figures, fixed typo (sorry Rob)",
year = "2018",
month = jun,
day = "25",
doi = "10.3847/1538-4357/aac5e5",
language = "English",
volume = "860",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "2",

}

RIS

TY - JOUR

T1 - An ALMA survey of the SCUBA-2 Cosmology Legacy Survey UKIDSS/UDS field

T2 - number counts of submillimeter galaxies

AU - Stach, S. M.

AU - Smail, I.

AU - Swinbank, A. M.

AU - Geach, J. E.

AU - An, F. X.

AU - Almaini, O.

AU - Arumugam, V.

AU - Blain, A. W.

AU - Chapman, S. C.

AU - Conselice, C. J.

AU - Cooke, E. A.

AU - Coppin, K. E. K.

AU - Dunlop, J. S.

AU - Farrah, D.

AU - Gullberg, B.

AU - Hartley, W.

AU - Ivison, R. J.

AU - Maltby, D. T.

AU - Michałowski, M. J.

AU - Scott, D.

AU - Wardlow, J. L.

AU - Werf, P. van der

N1 - 11 pages, 4 figures, fixed typo (sorry Rob)

PY - 2018/6/25

Y1 - 2018/6/25

N2 - We report the first results of AS2UDS, an 870 μm continuum survey with the Atacama Large Millimeter/Submillimeter Array (ALMA) of a total area of ∼50 arcmin 2 comprising a complete sample of 716 submillimeter sources drawn from the SCUBA-2 Cosmology Legacy Survey (S2CLS) map of the UKIDSS/UDS field. The S2CLS parent sample covers a 0.96 degree 2 field at σ 850 = 0.90 ± 0.05 mJy beam -1. Our deep, high-resolution ALMA observations with σ 870 ∼ 0.25 mJy and a 0.″15-0.″30 FWHM synthesized beam, provide precise locations for 695 submillimeter galaxies (SMGs) responsible for the submillimeter emission corresponding to 606 sources in the low-resolution, single-dish map. We measure the number counts of SMGs brighter than S 870 ≥ 4 mJy, free from the effects of blending and show that the normalization of the counts falls by 28% ± 2% in comparison with the SCUBA-2 published counts, but that the shape remains unchanged. We determine that % of the brighter single-dish sources with S 850 ≥ 9 mJy consist of a blend of two or more ALMA-detectable SMGs brighter than S 870 ∼ 1 mJy (corresponding to a galaxy with a total-infrared luminosity of L IR 10 12 L o), in comparison with 28% ± 2% for the single-dish sources at S 850 ≥ 5 mJy. Using the 46 single-dish submillimeter sources that contain two or more ALMA-detected SMGs with photometric redshifts, we show that there is a significant statistical excess of pairs of SMGs with similar redshifts (<1% probability of occurring by chance), suggesting that at least 30% of these blends arise from physically associated pairs of SMGs.

AB - We report the first results of AS2UDS, an 870 μm continuum survey with the Atacama Large Millimeter/Submillimeter Array (ALMA) of a total area of ∼50 arcmin 2 comprising a complete sample of 716 submillimeter sources drawn from the SCUBA-2 Cosmology Legacy Survey (S2CLS) map of the UKIDSS/UDS field. The S2CLS parent sample covers a 0.96 degree 2 field at σ 850 = 0.90 ± 0.05 mJy beam -1. Our deep, high-resolution ALMA observations with σ 870 ∼ 0.25 mJy and a 0.″15-0.″30 FWHM synthesized beam, provide precise locations for 695 submillimeter galaxies (SMGs) responsible for the submillimeter emission corresponding to 606 sources in the low-resolution, single-dish map. We measure the number counts of SMGs brighter than S 870 ≥ 4 mJy, free from the effects of blending and show that the normalization of the counts falls by 28% ± 2% in comparison with the SCUBA-2 published counts, but that the shape remains unchanged. We determine that % of the brighter single-dish sources with S 850 ≥ 9 mJy consist of a blend of two or more ALMA-detectable SMGs brighter than S 870 ∼ 1 mJy (corresponding to a galaxy with a total-infrared luminosity of L IR 10 12 L o), in comparison with 28% ± 2% for the single-dish sources at S 850 ≥ 5 mJy. Using the 46 single-dish submillimeter sources that contain two or more ALMA-detected SMGs with photometric redshifts, we show that there is a significant statistical excess of pairs of SMGs with similar redshifts (<1% probability of occurring by chance), suggesting that at least 30% of these blends arise from physically associated pairs of SMGs.

KW - galaxies: high-redshift

KW - galaxies: starburst

UR - http://www.scopus.com/inward/record.url?scp=85049195000&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/aac5e5

DO - 10.3847/1538-4357/aac5e5

M3 - Article

VL - 860

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 2

M1 - 161

ER -