Physical Conditions of the Gas in an ALMA [CII]-identified Submillimetre Galaxy at z = 4.44

M. T. Huynh; R. P. Norris; Kristen Coppin; B. H. C. Emonts; R. J. Ivison; N. Seymour; Ian Smail; V. Smolcic; A. M. Swinbank; W. N. Brandt; S.C. Chapman; H. Dannerbauer; C. De Breuck; T. R. Greve; J. A. Hodge; A. Karim; K. K. Knudsen; K.M. Menten; P. van der Werf; F. Walter; A. Weiss

doi:10.1093/mnrasl/slt014

Physical Conditions of the Gas in an ALMA [CII]-identified Submillimetre Galaxy at z = 4.44

M. T. Huynh, R. P. Norris, Kristen Coppin, B. H. C. Emonts, R. J. Ivison, N. Seymour, Ian Smail, V. Smolcic, A. M. Swinbank, W. N. Brandt, S.C. Chapman, H. Dannerbauer, C. De Breuck, T. R. Greve, J. A. Hodge, A. Karim, K. K. Knudsen, K.M. Menten, P. van der Werf, F. WalterA. Weiss

Centre for Astrophysics Research (CAR)

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Abstract

We present CO(2-1) observations of the submillimetre galaxy ALESS65.1 performed with the Australia Telescope Compact Array at 42.3 GHz. A previous ALMA study of submillimetre galaxies in the Extended Chandra Deep Field South detected [CII] 157.74 micron emission from this galaxy at a redshift of z = 4.44. No CO(2-1) emission was detected but we derive a firm upper limit to the cold gas mass in ALESS65.1 of M_gas 4 SMGs being the likely progenitors of massive red-and-dead galaxies at z > 2. The ratio of the [CII], CO and far-infrared luminosities implies a strong far-ultraviolet field of G_0 > 10^3, as seen in Galactic star forming regions or local ULIRGs. The observed L_[CII]/L_FIR = 2.3 x 10^{-3} is high compared to local ULIRGs and, combined with L_[CII]/L_CO > 2700, it is consistent with ALESS65.1 either having an extended (several kpc) [CII] emitting region or lower than solar metallicity.

Original language	English
Pages (from-to)	L88-L92
Journal	Monthly Notices of the Royal Astronomical Society
Volume	431
Early online date	7 Mar 2013
DOIs	https://doi.org/10.1093/mnrasl/slt014
Publication status	Published - Apr 2013

Keywords

astro-ph.CO

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Huynh, M. T., Norris, R. P., Coppin, K., Emonts, B. H. C., Ivison, R. J., Seymour, N., Smail, I., Smolcic, V., Swinbank, A. M., Brandt, W. N., Chapman, S. C., Dannerbauer, H., De Breuck, C., Greve, T. R., Hodge, J. A., Karim, A., Knudsen, K. K., Menten, K. M., van der Werf, P., ... Weiss, A. (2013). Physical Conditions of the Gas in an ALMA [CII]-identified Submillimetre Galaxy at z = 4.44. Monthly Notices of the Royal Astronomical Society, 431, L88-L92. https://doi.org/10.1093/mnrasl/slt014

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title = "Physical Conditions of the Gas in an ALMA [CII]-identified Submillimetre Galaxy at z = 4.44",

abstract = "We present CO(2-1) observations of the submillimetre galaxy ALESS65.1 performed with the Australia Telescope Compact Array at 42.3 GHz. A previous ALMA study of submillimetre galaxies in the Extended Chandra Deep Field South detected [CII] 157.74 micron emission from this galaxy at a redshift of z = 4.44. No CO(2-1) emission was detected but we derive a firm upper limit to the cold gas mass in ALESS65.1 of M_gas 4 SMGs being the likely progenitors of massive red-and-dead galaxies at z > 2. The ratio of the [CII], CO and far-infrared luminosities implies a strong far-ultraviolet field of G_0 > 10^3, as seen in Galactic star forming regions or local ULIRGs. The observed L_[CII]/L_FIR = 2.3 x 10^{-3} is high compared to local ULIRGs and, combined with L_[CII]/L_CO > 2700, it is consistent with ALESS65.1 either having an extended (several kpc) [CII] emitting region or lower than solar metallicity.",

keywords = "astro-ph.CO",

author = "Huynh, {M. T.} and Norris, {R. P.} and Kristen Coppin and Emonts, {B. H. C.} and Ivison, {R. J.} and N. Seymour and Ian Smail and V. Smolcic and Swinbank, {A. M.} and Brandt, {W. N.} and S.C. Chapman and H. Dannerbauer and {De Breuck}, C. and Greve, {T. R.} and Hodge, {J. A.} and A. Karim and Knudsen, {K. K.} and K.M. Menten and {van der Werf}, P. and F. Walter and A. Weiss",

year = "2013",

month = apr,

doi = "10.1093/mnrasl/slt014",

language = "English",

volume = "431",

pages = "L88--L92",

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

issn = "0035-8711",

publisher = "Oxford University Press (OUP)",

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Huynh, MT, Norris, RP, Coppin, K, Emonts, BHC, Ivison, RJ, Seymour, N, Smail, I, Smolcic, V, Swinbank, AM, Brandt, WN, Chapman, SC, Dannerbauer, H, De Breuck, C, Greve, TR, Hodge, JA, Karim, A, Knudsen, KK, Menten, KM, van der Werf, P, Walter, F & Weiss, A 2013, 'Physical Conditions of the Gas in an ALMA [CII]-identified Submillimetre Galaxy at z = 4.44', Monthly Notices of the Royal Astronomical Society, vol. 431, pp. L88-L92. https://doi.org/10.1093/mnrasl/slt014

TY - JOUR

T1 - Physical Conditions of the Gas in an ALMA [CII]-identified Submillimetre Galaxy at z = 4.44

AU - Huynh, M. T.

AU - Norris, R. P.

AU - Coppin, Kristen

AU - Emonts, B. H. C.

AU - Ivison, R. J.

AU - Seymour, N.

AU - Smail, Ian

AU - Smolcic, V.

AU - Swinbank, A. M.

AU - Brandt, W. N.

AU - Chapman, S.C.

AU - Dannerbauer, H.

AU - De Breuck, C.

AU - Greve, T. R.

AU - Hodge, J. A.

AU - Karim, A.

AU - Knudsen, K. K.

AU - Menten, K.M.

AU - van der Werf, P.

AU - Walter, F.

AU - Weiss, A.

PY - 2013/4

Y1 - 2013/4

N2 - We present CO(2-1) observations of the submillimetre galaxy ALESS65.1 performed with the Australia Telescope Compact Array at 42.3 GHz. A previous ALMA study of submillimetre galaxies in the Extended Chandra Deep Field South detected [CII] 157.74 micron emission from this galaxy at a redshift of z = 4.44. No CO(2-1) emission was detected but we derive a firm upper limit to the cold gas mass in ALESS65.1 of M_gas 4 SMGs being the likely progenitors of massive red-and-dead galaxies at z > 2. The ratio of the [CII], CO and far-infrared luminosities implies a strong far-ultraviolet field of G_0 > 10^3, as seen in Galactic star forming regions or local ULIRGs. The observed L_[CII]/L_FIR = 2.3 x 10^{-3} is high compared to local ULIRGs and, combined with L_[CII]/L_CO > 2700, it is consistent with ALESS65.1 either having an extended (several kpc) [CII] emitting region or lower than solar metallicity.

AB - We present CO(2-1) observations of the submillimetre galaxy ALESS65.1 performed with the Australia Telescope Compact Array at 42.3 GHz. A previous ALMA study of submillimetre galaxies in the Extended Chandra Deep Field South detected [CII] 157.74 micron emission from this galaxy at a redshift of z = 4.44. No CO(2-1) emission was detected but we derive a firm upper limit to the cold gas mass in ALESS65.1 of M_gas 4 SMGs being the likely progenitors of massive red-and-dead galaxies at z > 2. The ratio of the [CII], CO and far-infrared luminosities implies a strong far-ultraviolet field of G_0 > 10^3, as seen in Galactic star forming regions or local ULIRGs. The observed L_[CII]/L_FIR = 2.3 x 10^{-3} is high compared to local ULIRGs and, combined with L_[CII]/L_CO > 2700, it is consistent with ALESS65.1 either having an extended (several kpc) [CII] emitting region or lower than solar metallicity.

KW - astro-ph.CO

U2 - 10.1093/mnrasl/slt014

DO - 10.1093/mnrasl/slt014

M3 - Article

SN - 0035-8711

VL - 431

SP - L88-L92

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

Physical Conditions of the Gas in an ALMA [CII]-identified Submillimetre Galaxy at z = 4.44

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