THE REST-FRAME SUBMILLIMETER SPECTRUM OF HIGH-REDSHIFT, DUSTY, STAR-FORMING GALAXIES
We present the average rest-frame spectrum of high-redshift dusty, star-forming galaxies from 250 to 770 GHz. This spectrum was constructed by stacking Atacama Large Millimeter/submillimeter Array (ALMA) 3 mm spectra of 22 such sources discovered by the South Pole Telescope and spanning z = 2.0-5.7....
Published in: | The Astrophysical Journal |
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eScholarship, University of California
2014
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Online Access: | https://escholarship.org/uc/item/3n311679 https://escholarship.org/content/qt3n311679/qt3n311679.pdf https://doi.org/10.1088/0004-637x/785/2/149 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt3n311679 2024-09-15T18:36:54+00:00 THE REST-FRAME SUBMILLIMETER SPECTRUM OF HIGH-REDSHIFT, DUSTY, STAR-FORMING GALAXIES Spilker, JS Marrone, DP Aguirre, JE Aravena, M Ashby, MLN Béthermin, M Bradford, CM Bothwell, MS Brodwin, M Carlstrom, JE Chapman, SC Crawford, TM de Breuck, C Fassnacht, CD Gonzalez, AH Greve, TR Gullberg, B Hezaveh, Y Holzapfel, WL Husband, K Ma, J Malkan, M Murphy, EJ Reichardt, CL Rotermund, KM Stalder, B Stark, AA Strandet, M Vieira, JD Weiß, A Welikala, N 149 2014-04-20 application/pdf https://escholarship.org/uc/item/3n311679 https://escholarship.org/content/qt3n311679/qt3n311679.pdf https://doi.org/10.1088/0004-637x/785/2/149 unknown eScholarship, University of California qt3n311679 https://escholarship.org/uc/item/3n311679 https://escholarship.org/content/qt3n311679/qt3n311679.pdf doi:10.1088/0004-637x/785/2/149 public The Astrophysical Journal, vol 785, iss 2 galaxies: high-redshift galaxies: ISM galaxies: star formation ISM: molecules astro-ph.GA astro-ph.CO Astronomical and Space Sciences Atomic Molecular Nuclear Particle and Plasma Physics Physical Chemistry (incl. Structural) Astronomy & Astrophysics article 2014 ftcdlib https://doi.org/10.1088/0004-637x/785/2/149 2024-06-28T06:28:19Z We present the average rest-frame spectrum of high-redshift dusty, star-forming galaxies from 250 to 770 GHz. This spectrum was constructed by stacking Atacama Large Millimeter/submillimeter Array (ALMA) 3 mm spectra of 22 such sources discovered by the South Pole Telescope and spanning z = 2.0-5.7. In addition to multiple bright spectral features of 12CO, [C I], and H 2O, we also detect several faint transitions of 13CO, HCN, HNC, HCO+, and CN, and use the observed line strengths to characterize the typical properties of the interstellar medium of these high-redshift starburst galaxies. We find that the 13CO brightness in these objects is comparable to that of the only other z > 2 star-forming galaxy in which 13CO has been observed. We show that the emission from the high-critical density molecules HCN, HNC, HCO+, and CN is consistent with a warm, dense medium with T kin 55 K and cm-3. High molecular hydrogen densities are required to reproduce the observed line ratios, and we demonstrate that alternatives to purely collisional excitation are unlikely to be significant for the bulk of these systems. We quantify the average emission from several species with no individually detected transitions, and find emission from the hydride CH and the linear molecule CCH for the first time at high redshift, indicating that these molecules may be powerful probes of interstellar chemistry in high-redshift systems. These observations represent the first constraints on many molecular species with rest-frame transitions from 0.4 to 1.2 mm in star-forming systems at high redshift, and will be invaluable in making effective use of ALMA in full science operations. © 2014. The American Astronomical Society. All rights reserved. Article in Journal/Newspaper South pole University of California: eScholarship The Astrophysical Journal 785 2 149 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
galaxies: high-redshift galaxies: ISM galaxies: star formation ISM: molecules astro-ph.GA astro-ph.CO Astronomical and Space Sciences Atomic Molecular Nuclear Particle and Plasma Physics Physical Chemistry (incl. Structural) Astronomy & Astrophysics |
spellingShingle |
galaxies: high-redshift galaxies: ISM galaxies: star formation ISM: molecules astro-ph.GA astro-ph.CO Astronomical and Space Sciences Atomic Molecular Nuclear Particle and Plasma Physics Physical Chemistry (incl. Structural) Astronomy & Astrophysics Spilker, JS Marrone, DP Aguirre, JE Aravena, M Ashby, MLN Béthermin, M Bradford, CM Bothwell, MS Brodwin, M Carlstrom, JE Chapman, SC Crawford, TM de Breuck, C Fassnacht, CD Gonzalez, AH Greve, TR Gullberg, B Hezaveh, Y Holzapfel, WL Husband, K Ma, J Malkan, M Murphy, EJ Reichardt, CL Rotermund, KM Stalder, B Stark, AA Strandet, M Vieira, JD Weiß, A Welikala, N THE REST-FRAME SUBMILLIMETER SPECTRUM OF HIGH-REDSHIFT, DUSTY, STAR-FORMING GALAXIES |
topic_facet |
galaxies: high-redshift galaxies: ISM galaxies: star formation ISM: molecules astro-ph.GA astro-ph.CO Astronomical and Space Sciences Atomic Molecular Nuclear Particle and Plasma Physics Physical Chemistry (incl. Structural) Astronomy & Astrophysics |
description |
We present the average rest-frame spectrum of high-redshift dusty, star-forming galaxies from 250 to 770 GHz. This spectrum was constructed by stacking Atacama Large Millimeter/submillimeter Array (ALMA) 3 mm spectra of 22 such sources discovered by the South Pole Telescope and spanning z = 2.0-5.7. In addition to multiple bright spectral features of 12CO, [C I], and H 2O, we also detect several faint transitions of 13CO, HCN, HNC, HCO+, and CN, and use the observed line strengths to characterize the typical properties of the interstellar medium of these high-redshift starburst galaxies. We find that the 13CO brightness in these objects is comparable to that of the only other z > 2 star-forming galaxy in which 13CO has been observed. We show that the emission from the high-critical density molecules HCN, HNC, HCO+, and CN is consistent with a warm, dense medium with T kin 55 K and cm-3. High molecular hydrogen densities are required to reproduce the observed line ratios, and we demonstrate that alternatives to purely collisional excitation are unlikely to be significant for the bulk of these systems. We quantify the average emission from several species with no individually detected transitions, and find emission from the hydride CH and the linear molecule CCH for the first time at high redshift, indicating that these molecules may be powerful probes of interstellar chemistry in high-redshift systems. These observations represent the first constraints on many molecular species with rest-frame transitions from 0.4 to 1.2 mm in star-forming systems at high redshift, and will be invaluable in making effective use of ALMA in full science operations. © 2014. The American Astronomical Society. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Spilker, JS Marrone, DP Aguirre, JE Aravena, M Ashby, MLN Béthermin, M Bradford, CM Bothwell, MS Brodwin, M Carlstrom, JE Chapman, SC Crawford, TM de Breuck, C Fassnacht, CD Gonzalez, AH Greve, TR Gullberg, B Hezaveh, Y Holzapfel, WL Husband, K Ma, J Malkan, M Murphy, EJ Reichardt, CL Rotermund, KM Stalder, B Stark, AA Strandet, M Vieira, JD Weiß, A Welikala, N |
author_facet |
Spilker, JS Marrone, DP Aguirre, JE Aravena, M Ashby, MLN Béthermin, M Bradford, CM Bothwell, MS Brodwin, M Carlstrom, JE Chapman, SC Crawford, TM de Breuck, C Fassnacht, CD Gonzalez, AH Greve, TR Gullberg, B Hezaveh, Y Holzapfel, WL Husband, K Ma, J Malkan, M Murphy, EJ Reichardt, CL Rotermund, KM Stalder, B Stark, AA Strandet, M Vieira, JD Weiß, A Welikala, N |
author_sort |
Spilker, JS |
title |
THE REST-FRAME SUBMILLIMETER SPECTRUM OF HIGH-REDSHIFT, DUSTY, STAR-FORMING GALAXIES |
title_short |
THE REST-FRAME SUBMILLIMETER SPECTRUM OF HIGH-REDSHIFT, DUSTY, STAR-FORMING GALAXIES |
title_full |
THE REST-FRAME SUBMILLIMETER SPECTRUM OF HIGH-REDSHIFT, DUSTY, STAR-FORMING GALAXIES |
title_fullStr |
THE REST-FRAME SUBMILLIMETER SPECTRUM OF HIGH-REDSHIFT, DUSTY, STAR-FORMING GALAXIES |
title_full_unstemmed |
THE REST-FRAME SUBMILLIMETER SPECTRUM OF HIGH-REDSHIFT, DUSTY, STAR-FORMING GALAXIES |
title_sort |
rest-frame submillimeter spectrum of high-redshift, dusty, star-forming galaxies |
publisher |
eScholarship, University of California |
publishDate |
2014 |
url |
https://escholarship.org/uc/item/3n311679 https://escholarship.org/content/qt3n311679/qt3n311679.pdf https://doi.org/10.1088/0004-637x/785/2/149 |
op_coverage |
149 |
genre |
South pole |
genre_facet |
South pole |
op_source |
The Astrophysical Journal, vol 785, iss 2 |
op_relation |
qt3n311679 https://escholarship.org/uc/item/3n311679 https://escholarship.org/content/qt3n311679/qt3n311679.pdf doi:10.1088/0004-637x/785/2/149 |
op_rights |
public |
op_doi |
https://doi.org/10.1088/0004-637x/785/2/149 |
container_title |
The Astrophysical Journal |
container_volume |
785 |
container_issue |
2 |
container_start_page |
149 |
_version_ |
1810480637847535616 |