Physical conditions of the gas in an ALMA [C II]-identified submillimetre galaxy at z = 4.44
dc.contributor.author | Huynh, M. | |
dc.contributor.author | Norris, R. | |
dc.contributor.author | Seymour, Nick | |
dc.contributor.author | Coppin, K. | |
dc.contributor.author | Ivison, R. | |
dc.contributor.author | Ian, S. | |
dc.contributor.author | Swinbank, A. | |
dc.contributor.author | Karim, A. | |
dc.contributor.author | De Breuck, C. | |
dc.contributor.author | Smolcic, V. | |
dc.contributor.author | Brandt, W. | |
dc.contributor.author | Chapman, S. | |
dc.contributor.author | Dannerbauer, H. | |
dc.contributor.author | Greve, T. | |
dc.contributor.author | Hodge, J. | |
dc.contributor.author | Knudsen, K. | |
dc.contributor.author | Menten, K. | |
dc.contributor.author | Weiss, A. | |
dc.contributor.author | van der Werf, P. | |
dc.date.accessioned | 2017-01-30T11:29:01Z | |
dc.date.available | 2017-01-30T11:29:01Z | |
dc.date.created | 2016-01-18T20:00:48Z | |
dc.date.issued | 2013 | |
dc.identifier.citation | Huynh, M. and Norris, R. and Seymour, N. and Coppin, K. and Ivison, R. and Ian, S. and Swinbank, A. et al. 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): pp. L88-L92. | |
dc.identifier.uri | http://hdl.handle.net/20.500.11937/12141 | |
dc.identifier.doi | 10.1093/mnrasl/slt014 | |
dc.description.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 μm emission 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<1.7×1010 M☉. 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 [C ii], 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[CII]/LFIR=2.3×10−3 is high compared to local ULIRGs and, combined with L[CII]/LC~>2700, it is consistent with ALESS65.1 either having an extended (several kpc) [C ii] emitting region or lower than solar metallicity. | |
dc.title | Physical conditions of the gas in an ALMA [C II]-identified submillimetre galaxy at z = 4.44 | |
dc.type | Journal Article | |
dcterms.source.volume | 431 | |
dcterms.source.number | 1 | |
dcterms.source.startPage | L88 | |
dcterms.source.endPage | L92 | |
dcterms.source.issn | 1745-3925 | |
dcterms.source.title | Monthly Notices of the Royal Astronomical Society: Letters | |
curtin.note |
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. | |
curtin.department | Department of Physics and Astronomy | |
curtin.accessStatus | Open access |