The [CII]/[NII] ratio in 3 < z < 6 sub-millimetre galaxies from the South Pole Telescope survey
We present Atacama Compact Array and Atacama Pathfinder Experiment observations of the [N II] 205 $\mu$m fine-structure line in 40 sub-millimetre galaxies lying at redshifts z = 3 to 6, drawn from the 2500 deg$^2$ South Pole Telescope survey. This represents the largest uniformly selected sample of...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:10095873 2023-12-24T10:24:53+01:00 The [CII]/[NII] ratio in 3 < z < 6 sub-millimetre galaxies from the South Pole Telescope survey Cunningham, DJM Chapman, SC Aravena, M Breuck, CD Béthermin, M Chen, C-C Dong, C Gonzalez, AH Greve, TR Litke, KC Ma, J Malkan, M Marrone, DP Miller, T Phadke, KA Reuter, C Rotermund, K Spilker, JS Stark, AA Strandet, M Vieira, JD Weiß, A 2020-05 text https://discovery.ucl.ac.uk/id/eprint/10095873/1/Greve_staa820%20Final.pdf https://discovery.ucl.ac.uk/id/eprint/10095873/ eng eng https://discovery.ucl.ac.uk/id/eprint/10095873/1/Greve_staa820%20Final.pdf https://discovery.ucl.ac.uk/id/eprint/10095873/ open Monthly Notices of the Royal Astronomical Society , 494 (3) pp. 4090-4097. (2020) astro-ph.GA Article 2020 ftucl 2023-11-27T13:07:34Z We present Atacama Compact Array and Atacama Pathfinder Experiment observations of the [N II] 205 $\mu$m fine-structure line in 40 sub-millimetre galaxies lying at redshifts z = 3 to 6, drawn from the 2500 deg$^2$ South Pole Telescope survey. This represents the largest uniformly selected sample of high-redshift [N II] 205 $\mu$m measurements to date. 29 sources also have [C II] 158 $\mu$m line observations allowing a characterization of the distribution of the [C II] to [N II] luminosity ratio for the first time at high-redshift. The sample exhibits a median L$_{[C II]}$ /L$_{[N II]}$ $\approx$ 11 and interquartile range of 5.0 to 24.7. These ratios are similar to those observed in local (U)LIRGs, possibly indicating similarities in their interstellar medium. At the extremes, we find individual sub-millimetre galaxies with L$_{[C II]}$ /L$_{[N II]}$ low enough to suggest a smaller contribution from neutral gas than ionized gas to the [C II] flux and high enough to suggest strongly photon or X-ray region dominated flux. These results highlight a large range in this line luminosity ratio for sub-millimetre galaxies, which may be caused by variations in gas density, the relative abundances of carbon and nitrogen, ionization parameter, metallicity, and a variation in the fractional abundance of ionized and neutral interstellar medium. Article in Journal/Newspaper South pole University College London: UCL Discovery South Pole |
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University College London: UCL Discovery |
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English |
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astro-ph.GA Cunningham, DJM Chapman, SC Aravena, M Breuck, CD Béthermin, M Chen, C-C Dong, C Gonzalez, AH Greve, TR Litke, KC Ma, J Malkan, M Marrone, DP Miller, T Phadke, KA Reuter, C Rotermund, K Spilker, JS Stark, AA Strandet, M Vieira, JD Weiß, A The [CII]/[NII] ratio in 3 < z < 6 sub-millimetre galaxies from the South Pole Telescope survey |
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astro-ph.GA |
description |
We present Atacama Compact Array and Atacama Pathfinder Experiment observations of the [N II] 205 $\mu$m fine-structure line in 40 sub-millimetre galaxies lying at redshifts z = 3 to 6, drawn from the 2500 deg$^2$ South Pole Telescope survey. This represents the largest uniformly selected sample of high-redshift [N II] 205 $\mu$m measurements to date. 29 sources also have [C II] 158 $\mu$m line observations allowing a characterization of the distribution of the [C II] to [N II] luminosity ratio for the first time at high-redshift. The sample exhibits a median L$_{[C II]}$ /L$_{[N II]}$ $\approx$ 11 and interquartile range of 5.0 to 24.7. These ratios are similar to those observed in local (U)LIRGs, possibly indicating similarities in their interstellar medium. At the extremes, we find individual sub-millimetre galaxies with L$_{[C II]}$ /L$_{[N II]}$ low enough to suggest a smaller contribution from neutral gas than ionized gas to the [C II] flux and high enough to suggest strongly photon or X-ray region dominated flux. These results highlight a large range in this line luminosity ratio for sub-millimetre galaxies, which may be caused by variations in gas density, the relative abundances of carbon and nitrogen, ionization parameter, metallicity, and a variation in the fractional abundance of ionized and neutral interstellar medium. |
format |
Article in Journal/Newspaper |
author |
Cunningham, DJM Chapman, SC Aravena, M Breuck, CD Béthermin, M Chen, C-C Dong, C Gonzalez, AH Greve, TR Litke, KC Ma, J Malkan, M Marrone, DP Miller, T Phadke, KA Reuter, C Rotermund, K Spilker, JS Stark, AA Strandet, M Vieira, JD Weiß, A |
author_facet |
Cunningham, DJM Chapman, SC Aravena, M Breuck, CD Béthermin, M Chen, C-C Dong, C Gonzalez, AH Greve, TR Litke, KC Ma, J Malkan, M Marrone, DP Miller, T Phadke, KA Reuter, C Rotermund, K Spilker, JS Stark, AA Strandet, M Vieira, JD Weiß, A |
author_sort |
Cunningham, DJM |
title |
The [CII]/[NII] ratio in 3 < z < 6 sub-millimetre galaxies from the South Pole Telescope survey |
title_short |
The [CII]/[NII] ratio in 3 < z < 6 sub-millimetre galaxies from the South Pole Telescope survey |
title_full |
The [CII]/[NII] ratio in 3 < z < 6 sub-millimetre galaxies from the South Pole Telescope survey |
title_fullStr |
The [CII]/[NII] ratio in 3 < z < 6 sub-millimetre galaxies from the South Pole Telescope survey |
title_full_unstemmed |
The [CII]/[NII] ratio in 3 < z < 6 sub-millimetre galaxies from the South Pole Telescope survey |
title_sort |
[cii]/[nii] ratio in 3 < z < 6 sub-millimetre galaxies from the south pole telescope survey |
publishDate |
2020 |
url |
https://discovery.ucl.ac.uk/id/eprint/10095873/1/Greve_staa820%20Final.pdf https://discovery.ucl.ac.uk/id/eprint/10095873/ |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
Monthly Notices of the Royal Astronomical Society , 494 (3) pp. 4090-4097. (2020) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/10095873/1/Greve_staa820%20Final.pdf https://discovery.ucl.ac.uk/id/eprint/10095873/ |
op_rights |
open |
_version_ |
1786200119787388928 |