The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450-μm-selected galaxies and their contribution to the cosmic infrared background

J. E. Geach; E. L. Chapin; K. E. K. Coppin; J. S. Dunlop; M. Halpern; Ian Smail; P. van der Werf; S. Serjeant; D. Farrah; I. Roseboom; T. Targett; V. Arumugam; V. Asboth; A. Blain; A. Chrysostomou; C. Clarke; R. J. Ivison; S. L. Jones; A. Karim; T. Mackenzie; R. Meijerink; M. J. Michalowski; Douglas Scott; J. M. Simpson; A. M. Swinbank; D. M. Alexander; O. Almaini; I. Aretxaga; P. Best; S. Chapman; D. L. Clements; C. Conselice; A. L. R. Danielson; S. Eales; A. C. Edge; A. G. Gibb; D. Hughes; T. Jenness; K. K. Knudsen; C. G. Lacey; G. Marsden; R. McMahon; S. J. Oliver; M. J. Page; J. A. Peacock; D. Rigopoulou; E. I. Robson; M. Spaans; J. Stevens; T. M. A. Webb; C. Willott; C. D. Wilson; M. Zemcov

doi:10.1093/mnras/stt352

The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450-μm-selected galaxies and their contribution to the cosmic infrared background

J. E. Geach^*, E. L. Chapin, K. E. K. Coppin, J. S. Dunlop, M. Halpern, Ian Smail, P. van der Werf, S. Serjeant, D. Farrah, I. Roseboom, T. Targett, V. Arumugam, V. Asboth, A. Blain, A. Chrysostomou, C. Clarke, R. J. Ivison, S. L. Jones, A. Karim, T. MackenzieR. Meijerink, M. J. Michalowski, Douglas Scott, J. M. Simpson, A. M. Swinbank, D. M. Alexander, O. Almaini, I. Aretxaga, P. Best, S. Chapman, D. L. Clements, C. Conselice, A. L. R. Danielson, S. Eales, A. C. Edge, A. G. Gibb, D. Hughes, T. Jenness, K. K. Knudsen, C. G. Lacey, G. Marsden, R. McMahon, S. J. Oliver, M. J. Page, J. A. Peacock, D. Rigopoulou, E. I. Robson, M. Spaans, J. Stevens, T. M. A. Webb, C. Willott, C. D. Wilson, M. Zemcov

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

The first deep blank-field 450 μm map (1σ ≈ 1.3 mJy) from the Submillimetre Common-User Bolometer Array-2 SCUBA-2 Cosmology Legacy Survey (S2CLS), conducted with the James Clerk Maxwell Telescope (JCMT) is presented. Our map covers 140 arcmin2 of the Cosmological Evolution Survey field, in the footprint of the Hubble Space Telescope (HST) Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey. Using 60 submillimetre galaxies detected at ≥3.75σ, we evaluate the number counts of 450-μm-selected galaxies with flux densities S450 > 5 mJy. The 8 arcsec JCMT beam and high sensitivity of SCUBA-2 now make it possible to directly resolve a larger fraction of the cosmic infrared background (CIB, peaking at λ ˜ 200 μm) into the individual galaxies responsible for its emission than has previously been possible at this wavelength. At S450 > 5 mJy, we resolve (7.4 ± 0.7) × 10-2 MJy sr-1 of the CIB at 450 μm (equivalent to 16 ± 7 per cent of the absolute brightness measured by the Cosmic Background Explorer at this wavelength) into point sources. A further ˜40 per cent of the CIB can be recovered through a statistical stack of 24 μm emitters in this field, indicating that the majority (≈60 per cent) of the CIB at 450 μm is emitted by galaxies with S450 > 2 mJy. The average redshift of 450 μm emitters identified with an optical/near-infrared counterpart is estimated to be = 1.3, implying that the galaxies in the sample are in the ultraluminous class (L_IR≈ 1.1× 10^{12} {L_{⊙}}). If the galaxies contributing to the statistical stack lie at similar redshifts, then the majority of the CIB at 450 μm is emitted by galaxies in the luminous infrared galaxy (LIRG) class with LIR > 3.6 × 1011 L⊙.

Original language	English
Pages (from-to)	53-61
Number of pages	9
Journal	Monthly Notices of the Royal Astronomical Society
Volume	432
Issue number	1
DOIs	https://doi.org/10.1093/mnras/stt352
Publication status	Published - Jun 2013

Keywords

galaxies: high-redshift
cosmology: observations
submillimetre: galaxies
SUBMILLIMETER-SELECTED GALAXIES
DEGREE EXTRAGALACTIC SURVEY
HUBBLE-DEEP-FIELD
STAR-FORMATION
HIGH-REDSHIFT
MU-M
EVOLUTION
HERMES
DUSTY
HALF

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10.1093/mnras/stt352

http://adsabs.harvard.edu/abs/2013MNRAS.432...53G

Cite this

Geach, J. E., Chapin, E. L., Coppin, K. E. K., Dunlop, J. S., Halpern, M., Smail, I., van der Werf, P., Serjeant, S., Farrah, D., Roseboom, I., Targett, T., Arumugam, V., Asboth, V., Blain, A., Chrysostomou, A., Clarke, C., Ivison, R. J., Jones, S. L., Karim, A., ... Zemcov, M. (2013). The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450-μm-selected galaxies and their contribution to the cosmic infrared background. Monthly Notices of the Royal Astronomical Society, 432(1), 53-61. https://doi.org/10.1093/mnras/stt352

@article{bdae2b9acbba43bd96da832e10e3b20b,

title = "The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450-μm-selected galaxies and their contribution to the cosmic infrared background",

abstract = "The first deep blank-field 450 μm map (1σ ≈ 1.3 mJy) from the Submillimetre Common-User Bolometer Array-2 SCUBA-2 Cosmology Legacy Survey (S2CLS), conducted with the James Clerk Maxwell Telescope (JCMT) is presented. Our map covers 140 arcmin2 of the Cosmological Evolution Survey field, in the footprint of the Hubble Space Telescope (HST) Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey. Using 60 submillimetre galaxies detected at ≥3.75σ, we evaluate the number counts of 450-μm-selected galaxies with flux densities S450 > 5 mJy. The 8 arcsec JCMT beam and high sensitivity of SCUBA-2 now make it possible to directly resolve a larger fraction of the cosmic infrared background (CIB, peaking at λ ˜ 200 μm) into the individual galaxies responsible for its emission than has previously been possible at this wavelength. At S450 > 5 mJy, we resolve (7.4 ± 0.7) × 10-2 MJy sr-1 of the CIB at 450 μm (equivalent to 16 ± 7 per cent of the absolute brightness measured by the Cosmic Background Explorer at this wavelength) into point sources. A further ˜40 per cent of the CIB can be recovered through a statistical stack of 24 μm emitters in this field, indicating that the majority (≈60 per cent) of the CIB at 450 μm is emitted by galaxies with S450 > 2 mJy. The average redshift of 450 μm emitters identified with an optical/near-infrared counterpart is estimated to be = 1.3, implying that the galaxies in the sample are in the ultraluminous class (L_IR≈ 1.1× 10^{12} {L_{⊙}}). If the galaxies contributing to the statistical stack lie at similar redshifts, then the majority of the CIB at 450 μm is emitted by galaxies in the luminous infrared galaxy (LIRG) class with LIR > 3.6 × 1011 L⊙.",

keywords = "galaxies: high-redshift, cosmology: observations, submillimetre: galaxies, SUBMILLIMETER-SELECTED GALAXIES, DEGREE EXTRAGALACTIC SURVEY, HUBBLE-DEEP-FIELD, STAR-FORMATION, HIGH-REDSHIFT, MU-M, EVOLUTION, HERMES, DUSTY, HALF",

author = "Geach, {J. E.} and Chapin, {E. L.} and Coppin, {K. E. K.} and Dunlop, {J. S.} and M. Halpern and Ian Smail and {van der Werf}, P. and S. Serjeant and D. Farrah and I. Roseboom and T. Targett and V. Arumugam and V. Asboth and A. Blain and A. Chrysostomou and C. Clarke and Ivison, {R. J.} and Jones, {S. L.} and A. Karim and T. Mackenzie and R. Meijerink and Michalowski, {M. J.} and Douglas Scott and Simpson, {J. M.} and Swinbank, {A. M.} and Alexander, {D. M.} and O. Almaini and I. Aretxaga and P. Best and S. Chapman and Clements, {D. L.} and C. Conselice and Danielson, {A. L. R.} and S. Eales and Edge, {A. C.} and Gibb, {A. G.} and D. Hughes and T. Jenness and Knudsen, {K. K.} and Lacey, {C. G.} and G. Marsden and R. McMahon and Oliver, {S. J.} and Page, {M. J.} and Peacock, {J. A.} and D. Rigopoulou and Robson, {E. I.} and M. Spaans and J. Stevens and Webb, {T. M. A.} and C. Willott and Wilson, {C. D.} and M. Zemcov",

year = "2013",

month = jun,

doi = "10.1093/mnras/stt352",

language = "English",

volume = "432",

pages = "53--61",

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

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

}

Geach, JE, Chapin, EL, Coppin, KEK, Dunlop, JS, Halpern, M, Smail, I, van der Werf, P, Serjeant, S, Farrah, D, Roseboom, I, Targett, T, Arumugam, V, Asboth, V, Blain, A, Chrysostomou, A, Clarke, C, Ivison, RJ, Jones, SL, Karim, A, Mackenzie, T, Meijerink, R, Michalowski, MJ, Scott, D, Simpson, JM, Swinbank, AM, Alexander, DM, Almaini, O, Aretxaga, I, Best, P, Chapman, S, Clements, DL, Conselice, C, Danielson, ALR, Eales, S, Edge, AC, Gibb, AG, Hughes, D, Jenness, T, Knudsen, KK, Lacey, CG, Marsden, G, McMahon, R, Oliver, SJ, Page, MJ, Peacock, JA, Rigopoulou, D, Robson, EI, Spaans, M, Stevens, J, Webb, TMA, Willott, C, Wilson, CD & Zemcov, M 2013, 'The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450-μm-selected galaxies and their contribution to the cosmic infrared background', Monthly Notices of the Royal Astronomical Society, vol. 432, no. 1, pp. 53-61. https://doi.org/10.1093/mnras/stt352

TY - JOUR

T1 - The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450-μm-selected galaxies and their contribution to the cosmic infrared background

AU - Geach, J. E.

AU - Chapin, E. L.

AU - Coppin, K. E. K.

AU - Dunlop, J. S.

AU - Halpern, M.

AU - Smail, Ian

AU - van der Werf, P.

AU - Serjeant, S.

AU - Farrah, D.

AU - Roseboom, I.

AU - Targett, T.

AU - Arumugam, V.

AU - Asboth, V.

AU - Blain, A.

AU - Chrysostomou, A.

AU - Clarke, C.

AU - Ivison, R. J.

AU - Jones, S. L.

AU - Karim, A.

AU - Mackenzie, T.

AU - Meijerink, R.

AU - Michalowski, M. J.

AU - Scott, Douglas

AU - Simpson, J. M.

AU - Swinbank, A. M.

AU - Alexander, D. M.

AU - Almaini, O.

AU - Aretxaga, I.

AU - Best, P.

AU - Chapman, S.

AU - Clements, D. L.

AU - Conselice, C.

AU - Danielson, A. L. R.

AU - Eales, S.

AU - Edge, A. C.

AU - Gibb, A. G.

AU - Hughes, D.

AU - Jenness, T.

AU - Knudsen, K. K.

AU - Lacey, C. G.

AU - Marsden, G.

AU - McMahon, R.

AU - Oliver, S. J.

AU - Page, M. J.

AU - Peacock, J. A.

AU - Rigopoulou, D.

AU - Robson, E. I.

AU - Spaans, M.

AU - Stevens, J.

AU - Webb, T. M. A.

AU - Willott, C.

AU - Wilson, C. D.

AU - Zemcov, M.

PY - 2013/6

Y1 - 2013/6

N2 - The first deep blank-field 450 μm map (1σ ≈ 1.3 mJy) from the Submillimetre Common-User Bolometer Array-2 SCUBA-2 Cosmology Legacy Survey (S2CLS), conducted with the James Clerk Maxwell Telescope (JCMT) is presented. Our map covers 140 arcmin2 of the Cosmological Evolution Survey field, in the footprint of the Hubble Space Telescope (HST) Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey. Using 60 submillimetre galaxies detected at ≥3.75σ, we evaluate the number counts of 450-μm-selected galaxies with flux densities S450 > 5 mJy. The 8 arcsec JCMT beam and high sensitivity of SCUBA-2 now make it possible to directly resolve a larger fraction of the cosmic infrared background (CIB, peaking at λ ˜ 200 μm) into the individual galaxies responsible for its emission than has previously been possible at this wavelength. At S450 > 5 mJy, we resolve (7.4 ± 0.7) × 10-2 MJy sr-1 of the CIB at 450 μm (equivalent to 16 ± 7 per cent of the absolute brightness measured by the Cosmic Background Explorer at this wavelength) into point sources. A further ˜40 per cent of the CIB can be recovered through a statistical stack of 24 μm emitters in this field, indicating that the majority (≈60 per cent) of the CIB at 450 μm is emitted by galaxies with S450 > 2 mJy. The average redshift of 450 μm emitters identified with an optical/near-infrared counterpart is estimated to be = 1.3, implying that the galaxies in the sample are in the ultraluminous class (L_IR≈ 1.1× 10^{12} {L_{⊙}}). If the galaxies contributing to the statistical stack lie at similar redshifts, then the majority of the CIB at 450 μm is emitted by galaxies in the luminous infrared galaxy (LIRG) class with LIR > 3.6 × 1011 L⊙.

AB - The first deep blank-field 450 μm map (1σ ≈ 1.3 mJy) from the Submillimetre Common-User Bolometer Array-2 SCUBA-2 Cosmology Legacy Survey (S2CLS), conducted with the James Clerk Maxwell Telescope (JCMT) is presented. Our map covers 140 arcmin2 of the Cosmological Evolution Survey field, in the footprint of the Hubble Space Telescope (HST) Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey. Using 60 submillimetre galaxies detected at ≥3.75σ, we evaluate the number counts of 450-μm-selected galaxies with flux densities S450 > 5 mJy. The 8 arcsec JCMT beam and high sensitivity of SCUBA-2 now make it possible to directly resolve a larger fraction of the cosmic infrared background (CIB, peaking at λ ˜ 200 μm) into the individual galaxies responsible for its emission than has previously been possible at this wavelength. At S450 > 5 mJy, we resolve (7.4 ± 0.7) × 10-2 MJy sr-1 of the CIB at 450 μm (equivalent to 16 ± 7 per cent of the absolute brightness measured by the Cosmic Background Explorer at this wavelength) into point sources. A further ˜40 per cent of the CIB can be recovered through a statistical stack of 24 μm emitters in this field, indicating that the majority (≈60 per cent) of the CIB at 450 μm is emitted by galaxies with S450 > 2 mJy. The average redshift of 450 μm emitters identified with an optical/near-infrared counterpart is estimated to be = 1.3, implying that the galaxies in the sample are in the ultraluminous class (L_IR≈ 1.1× 10^{12} {L_{⊙}}). If the galaxies contributing to the statistical stack lie at similar redshifts, then the majority of the CIB at 450 μm is emitted by galaxies in the luminous infrared galaxy (LIRG) class with LIR > 3.6 × 1011 L⊙.

KW - galaxies: high-redshift

KW - cosmology: observations

KW - submillimetre: galaxies

KW - SUBMILLIMETER-SELECTED GALAXIES

KW - DEGREE EXTRAGALACTIC SURVEY

KW - HUBBLE-DEEP-FIELD

KW - STAR-FORMATION

KW - HIGH-REDSHIFT

KW - MU-M

KW - EVOLUTION

KW - HERMES

KW - DUSTY

KW - HALF

U2 - 10.1093/mnras/stt352

DO - 10.1093/mnras/stt352

M3 - Article

VL - 432

SP - 53

EP - 61

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -

The SCUBA-2 Cosmology Legacy Survey: blank-field number counts of 450-μm-selected galaxies and their contribution to the cosmic infrared background

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Keywords

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