A reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2014 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. Motivated by the current controversy over the redshift distribution and physical properties of...
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ftunivhertford:oai:uhra.herts.ac.uk:2299/19371 2024-05-19T07:48:42+00:00 A reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies Koprowski, M. P. Dunlop, J. S. Michalowski, M. J. Cirasuolo, M. Bowler, R. A. A. School of Physics, Astronomy and Mathematics 2014-10-11 12 2084790 http://hdl.handle.net/2299/19371 eng eng Monthly Notices of the Royal Astronomical Society Koprowski , M P , Dunlop , J S , Michalowski , M J , Cirasuolo , M & Bowler , R A A 2014 , ' A reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 444 , no. 1 , pp. 117-128 . https://doi.org/10.1093/mnras/stu1402 0035-8711 ArXiv: http://arxiv.org/abs/1312.1173v2 http://hdl.handle.net/2299/19371 astro-ph.CO 2014 ftunivhertford 2024-04-30T23:36:08Z This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2014 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. Motivated by the current controversy over the redshift distribution and physical properties of luminous (sub-)mm sources, we have undertaken a new study of the brightest sample of unlensed (sub-)mm sources with pre-ALMA interferometric follow-up in the COSMOS field. Exploiting the very latest multi-frequency supporting data, we find that this sample displays a redshift distribution indistinguishable from that of the lensed sources uncovered with the South Pole Telescope (SPT), with z_median ~ 3.5. We also find that, over the redshift range z ~ 2-6 the median stellar mass of the most luminous (sub-)mm sources is M_* ~ 3 * 10^11 M_odot, yielding a typical specific star-formation rate sSFR ~ 3 Gyr^-1. Consistent with recent ALMA and SMA studies, we confirm that source blending is not a serious issue in the study of luminous (sub-)mm sources uncovered by ground-based, single-dish surveys; only ~ 10-15% of bright (S_850 ~ 5 - 10 mJy) (sub-)mm sources arise from significant (i.e. >20%) blends, and so our conclusions are largely unaffected by whether we adopt the original single-dish mm/sub-mm flux-densities/positions, or the interferometric data. Our results suggest that apparent disagreements over the redshift distribution of (sub-)mm sources are a result of "down-sizing" in dust-enshrouded star-formation, consistent with existing knowledge of the star-formation histories of massive galaxies. They also indicate that extreme star-forming galaxies at high redshift are, on average, subject to the same star-formation rate-limiting processes as less luminous objects, and lie on the "main sequence" of star-forming galaxies at z>3. Peer reviewed Other/Unknown Material South pole University of Hertfordshire: UH Research Archive Monthly Notices of the Royal Astronomical Society 444 1 117 128 |
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University of Hertfordshire: UH Research Archive |
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astro-ph.CO |
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astro-ph.CO Koprowski, M. P. Dunlop, J. S. Michalowski, M. J. Cirasuolo, M. Bowler, R. A. A. A reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies |
topic_facet |
astro-ph.CO |
description |
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2014 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. Motivated by the current controversy over the redshift distribution and physical properties of luminous (sub-)mm sources, we have undertaken a new study of the brightest sample of unlensed (sub-)mm sources with pre-ALMA interferometric follow-up in the COSMOS field. Exploiting the very latest multi-frequency supporting data, we find that this sample displays a redshift distribution indistinguishable from that of the lensed sources uncovered with the South Pole Telescope (SPT), with z_median ~ 3.5. We also find that, over the redshift range z ~ 2-6 the median stellar mass of the most luminous (sub-)mm sources is M_* ~ 3 * 10^11 M_odot, yielding a typical specific star-formation rate sSFR ~ 3 Gyr^-1. Consistent with recent ALMA and SMA studies, we confirm that source blending is not a serious issue in the study of luminous (sub-)mm sources uncovered by ground-based, single-dish surveys; only ~ 10-15% of bright (S_850 ~ 5 - 10 mJy) (sub-)mm sources arise from significant (i.e. >20%) blends, and so our conclusions are largely unaffected by whether we adopt the original single-dish mm/sub-mm flux-densities/positions, or the interferometric data. Our results suggest that apparent disagreements over the redshift distribution of (sub-)mm sources are a result of "down-sizing" in dust-enshrouded star-formation, consistent with existing knowledge of the star-formation histories of massive galaxies. They also indicate that extreme star-forming galaxies at high redshift are, on average, subject to the same star-formation rate-limiting processes as less luminous objects, and lie on the "main sequence" of star-forming galaxies at z>3. Peer reviewed |
author2 |
School of Physics, Astronomy and Mathematics |
author |
Koprowski, M. P. Dunlop, J. S. Michalowski, M. J. Cirasuolo, M. Bowler, R. A. A. |
author_facet |
Koprowski, M. P. Dunlop, J. S. Michalowski, M. J. Cirasuolo, M. Bowler, R. A. A. |
author_sort |
Koprowski, M. P. |
title |
A reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies |
title_short |
A reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies |
title_full |
A reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies |
title_fullStr |
A reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies |
title_full_unstemmed |
A reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies |
title_sort |
reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies |
publishDate |
2014 |
url |
http://hdl.handle.net/2299/19371 |
genre |
South pole |
genre_facet |
South pole |
op_relation |
Monthly Notices of the Royal Astronomical Society Koprowski , M P , Dunlop , J S , Michalowski , M J , Cirasuolo , M & Bowler , R A A 2014 , ' A reassessment of the redshift distribution and physical properties of luminous (sub-)millimetre galaxies ' , Monthly Notices of the Royal Astronomical Society , vol. 444 , no. 1 , pp. 117-128 . https://doi.org/10.1093/mnras/stu1402 0035-8711 ArXiv: http://arxiv.org/abs/1312.1173v2 http://hdl.handle.net/2299/19371 |
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Monthly Notices of the Royal Astronomical Society |
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444 |
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117 |
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128 |
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