Physical conditions of the gas in an ALMA [C II]-identified submillimetre galaxy at z = 4.44

M. T. Huynh, R. P. Norris, N. Seymour, K. E.K. Coppin, R. J. Ivison, Smail Ian, A. M. Swinbank, A. Karim, C. De Breuck, V. Smolčić, William Nielsen Brandt, S. C. Chapman, H. Dannerbauer, T. R. Greve, J. A. Hodge, K. K. Knudsen, K. M. Menten, A. Weiss, P. P. van der Werf

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Abstract

We present 12CO(2-1) observations of the submillimetre galaxy ALESS65.1 performed with the Australia Telescope Compact Array (ATCA) at 42.3 GHz. A previous Atacama Large Millimeter Array study of submillimetre galaxies (SMGs) in the Extended Chandra Deep Field South detected [C II] 157.74 μmemission from this galaxy at a redshift of z=4.44. No 12CO(2- 1) emission was detected but we derive a firm upper limit to the cold gas mass in ALESS65.1 of Mgas >1.7 × 1010M . The estimated gas depletion time-scale is >50 Myr, which is similar to other high-redshift SMGs, and consistent with z > 4 SMGs being the likely progenitors of massive red-and-dead galaxies at z < 2. The ratio of the [CII], 12CO and far-infrared luminosities implies a strong far-ultraviolet field of G0 103, as seen in Galactic star-forming regions or local ultraluminous infrared galaxies (ULIRGs). The observed L[C II]/LFIR = 2.3 × 10-3 is high compared to local ULIRGs and, combined withL[C II]/LCO 2700, it is consiste×nt with ALESS65.1 either having an extended (several kpc) [C II] emitting region or lower than solar metallicity.

Original languageEnglish (US)
JournalMonthly Notices of the Royal Astronomical Society: Letters
Volume431
Issue number1
DOIs
StatePublished - May 3 2013

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galaxies
gases
gas
timescale
physical conditions
cold gas
metallicity
depletion
luminosity
telescopes
stars
firm
cold

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Huynh, M. T., Norris, R. P., Seymour, N., Coppin, K. E. K., Ivison, R. J., Ian, S., ... van der Werf, P. P. (2013). Physical conditions of the gas in an ALMA [C II]-identified submillimetre galaxy at z = 4.44. Monthly Notices of the Royal Astronomical Society: Letters, 431(1). https://doi.org/10.1093/mnrasl/slt014
Huynh, M. T. ; Norris, R. P. ; Seymour, N. ; Coppin, K. E.K. ; Ivison, R. J. ; Ian, Smail ; Swinbank, A. M. ; Karim, A. ; De Breuck, C. ; Smolčić, V. ; Brandt, William Nielsen ; Chapman, S. C. ; Dannerbauer, H. ; Greve, T. R. ; Hodge, J. A. ; Knudsen, K. K. ; Menten, K. M. ; Weiss, A. ; van der Werf, P. P. / Physical conditions of the gas in an ALMA [C II]-identified submillimetre galaxy at z = 4.44. In: Monthly Notices of the Royal Astronomical Society: Letters. 2013 ; Vol. 431, No. 1.
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abstract = "We present 12CO(2-1) observations of the submillimetre galaxy ALESS65.1 performed with the Australia Telescope Compact Array (ATCA) at 42.3 GHz. A previous Atacama Large Millimeter Array study of submillimetre galaxies (SMGs) in the Extended Chandra Deep Field South detected [C II] 157.74 μmemission from this galaxy at a redshift of z=4.44. No 12CO(2- 1) emission was detected but we derive a firm upper limit to the cold gas mass in ALESS65.1 of Mgas >1.7 × 1010M . The estimated gas depletion time-scale is >50 Myr, which is similar to other high-redshift SMGs, and consistent with z > 4 SMGs being the likely progenitors of massive red-and-dead galaxies at z < 2. The ratio of the [CII], 12CO and far-infrared luminosities implies a strong far-ultraviolet field of G0 103, as seen in Galactic star-forming regions or local ultraluminous infrared galaxies (ULIRGs). The observed L[C II]/LFIR = 2.3 × 10-3 is high compared to local ULIRGs and, combined withL[C II]/LCO 2700, it is consiste×nt with ALESS65.1 either having an extended (several kpc) [C II] emitting region or lower than solar metallicity.",
author = "Huynh, {M. T.} and Norris, {R. P.} and N. Seymour and Coppin, {K. E.K.} and Ivison, {R. J.} and Smail Ian and Swinbank, {A. M.} and A. Karim and {De Breuck}, C. and V. Smolčić and Brandt, {William Nielsen} and Chapman, {S. C.} and H. Dannerbauer and Greve, {T. R.} and Hodge, {J. A.} and Knudsen, {K. K.} and Menten, {K. M.} and A. Weiss and {van der Werf}, {P. P.}",
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Huynh, MT, Norris, RP, Seymour, N, Coppin, KEK, Ivison, RJ, Ian, S, Swinbank, AM, Karim, A, De Breuck, C, Smolčić, V, Brandt, WN, Chapman, SC, Dannerbauer, H, Greve, TR, Hodge, JA, Knudsen, KK, Menten, KM, Weiss, A & van der Werf, PP 2013, 'Physical conditions of the gas in an ALMA [C II]-identified submillimetre galaxy at z = 4.44', Monthly Notices of the Royal Astronomical Society: Letters, vol. 431, no. 1. https://doi.org/10.1093/mnrasl/slt014

Physical conditions of the gas in an ALMA [C II]-identified submillimetre galaxy at z = 4.44. / Huynh, M. T.; Norris, R. P.; Seymour, N.; Coppin, K. E.K.; Ivison, R. J.; Ian, Smail; Swinbank, A. M.; Karim, A.; De Breuck, C.; Smolčić, V.; Brandt, William Nielsen; Chapman, S. C.; Dannerbauer, H.; Greve, T. R.; Hodge, J. A.; Knudsen, K. K.; Menten, K. M.; Weiss, A.; van der Werf, P. P.

In: Monthly Notices of the Royal Astronomical Society: Letters, Vol. 431, No. 1, 03.05.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Physical conditions of the gas in an ALMA [C II]-identified submillimetre galaxy at z = 4.44

AU - Huynh, M. T.

AU - Norris, R. P.

AU - Seymour, N.

AU - Coppin, K. E.K.

AU - Ivison, R. J.

AU - Ian, Smail

AU - Swinbank, A. M.

AU - Karim, A.

AU - De Breuck, C.

AU - Smolčić, V.

AU - Brandt, William Nielsen

AU - Chapman, S. C.

AU - Dannerbauer, H.

AU - Greve, T. R.

AU - Hodge, J. A.

AU - Knudsen, K. K.

AU - Menten, K. M.

AU - Weiss, A.

AU - van der Werf, P. P.

PY - 2013/5/3

Y1 - 2013/5/3

N2 - We present 12CO(2-1) observations of the submillimetre galaxy ALESS65.1 performed with the Australia Telescope Compact Array (ATCA) at 42.3 GHz. A previous Atacama Large Millimeter Array study of submillimetre galaxies (SMGs) in the Extended Chandra Deep Field South detected [C II] 157.74 μmemission from this galaxy at a redshift of z=4.44. No 12CO(2- 1) emission was detected but we derive a firm upper limit to the cold gas mass in ALESS65.1 of Mgas >1.7 × 1010M . The estimated gas depletion time-scale is >50 Myr, which is similar to other high-redshift SMGs, and consistent with z > 4 SMGs being the likely progenitors of massive red-and-dead galaxies at z < 2. The ratio of the [CII], 12CO and far-infrared luminosities implies a strong far-ultraviolet field of G0 103, as seen in Galactic star-forming regions or local ultraluminous infrared galaxies (ULIRGs). The observed L[C II]/LFIR = 2.3 × 10-3 is high compared to local ULIRGs and, combined withL[C II]/LCO 2700, it is consiste×nt with ALESS65.1 either having an extended (several kpc) [C II] emitting region or lower than solar metallicity.

AB - We present 12CO(2-1) observations of the submillimetre galaxy ALESS65.1 performed with the Australia Telescope Compact Array (ATCA) at 42.3 GHz. A previous Atacama Large Millimeter Array study of submillimetre galaxies (SMGs) in the Extended Chandra Deep Field South detected [C II] 157.74 μmemission from this galaxy at a redshift of z=4.44. No 12CO(2- 1) emission was detected but we derive a firm upper limit to the cold gas mass in ALESS65.1 of Mgas >1.7 × 1010M . The estimated gas depletion time-scale is >50 Myr, which is similar to other high-redshift SMGs, and consistent with z > 4 SMGs being the likely progenitors of massive red-and-dead galaxies at z < 2. The ratio of the [CII], 12CO and far-infrared luminosities implies a strong far-ultraviolet field of G0 103, as seen in Galactic star-forming regions or local ultraluminous infrared galaxies (ULIRGs). The observed L[C II]/LFIR = 2.3 × 10-3 is high compared to local ULIRGs and, combined withL[C II]/LCO 2700, it is consiste×nt with ALESS65.1 either having an extended (several kpc) [C II] emitting region or lower than solar metallicity.

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U2 - 10.1093/mnrasl/slt014

DO - 10.1093/mnrasl/slt014

M3 - Article

VL - 431

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

SN - 1745-3925

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