THE REDSHIFT DISTRIBUTION OF DUSTY STAR-FORMING GALAXIES FROM THE SPT SURVEY
We use the Atacama Large Millimeter/submillimeter Array (ALMA) in Cycle 1 to determine spectroscopic redshifts of high-redshift dusty star-forming galaxies (DSFGs) selected by their 1.4 mm continuum emission in the South Pole Telescope (SPT) survey. We present ALMA 3 mm spectral scans between 84 and...
Published in: | The Astrophysical Journal |
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eScholarship, University of California
2016
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Online Access: | https://escholarship.org/uc/item/1kh7k4sk https://escholarship.org/content/qt1kh7k4sk/qt1kh7k4sk.pdf https://doi.org/10.3847/0004-637x/822/2/80 |
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ftcdlib:oai:escholarship.org:ark:/13030/qt1kh7k4sk 2024-09-15T18:36:53+00:00 THE REDSHIFT DISTRIBUTION OF DUSTY STAR-FORMING GALAXIES FROM THE SPT SURVEY Strandet, ML Weiss, A Vieira, JD de Breuck, C Aguirre, JE Aravena, M Ashby, MLN Béthermin, M Bradford, CM Carlstrom, JE Chapman, SC Crawford, TM Everett, W Fassnacht, CD Furstenau, RM Gonzalez, AH Greve, TR Gullberg, B Hezaveh, Y Kamenetzky, JR Litke, K Ma, J Malkan, M Marrone, DP Menten, KM Murphy, EJ Nadolski, A Rotermund, KM Spilker, JS Stark, AA Welikala, N 80 2016-05-10 application/pdf https://escholarship.org/uc/item/1kh7k4sk https://escholarship.org/content/qt1kh7k4sk/qt1kh7k4sk.pdf https://doi.org/10.3847/0004-637x/822/2/80 unknown eScholarship, University of California qt1kh7k4sk https://escholarship.org/uc/item/1kh7k4sk https://escholarship.org/content/qt1kh7k4sk/qt1kh7k4sk.pdf doi:10.3847/0004-637x/822/2/80 public The Astrophysical Journal, vol 822, iss 2 cosmology: observations early universe galaxies: evolution galaxies: high-redshift ISM: molecules astro-ph.GA Astronomical and Space Sciences Atomic Molecular Nuclear Particle and Plasma Physics Physical Chemistry (incl. Structural) Astronomy & Astrophysics article 2016 ftcdlib https://doi.org/10.3847/0004-637x/822/2/80 2024-06-28T06:28:19Z We use the Atacama Large Millimeter/submillimeter Array (ALMA) in Cycle 1 to determine spectroscopic redshifts of high-redshift dusty star-forming galaxies (DSFGs) selected by their 1.4 mm continuum emission in the South Pole Telescope (SPT) survey. We present ALMA 3 mm spectral scans between 84 and 114 GHz for 15 galaxies and targeted ALMA 1 mm observations for an additional eight sources. Our observations yield 30 new line detections from CO, [C i], [N ii], H2O and NH3. We further present Atacama Pathfinder Experiment [C ii] and CO mid-J observations for seven sources for which only a single line was detected in spectral-scan data from ALMA Cycle 0 or Cycle 1. We combine the new observations with previously published and new millimeter/submillimeter line and photometric data of the SPT-selected DSFGs to study their redshift distribution. The combined data yield 39 spectroscopic redshifts from molecular lines, a success rate of >85%. Our sample represents the largest data set of its kind today and has the highest spectroscopic completeness among all redshift surveys of high-z DSFGs. The median of the redshift distribution is z = 3.9 ±0.4, and the highest-redshift source in our sample is at z = 5.8. We discuss how the selection of our sources affects the redshift distribution, focusing on source brightness, selection wavelength, and strong gravitational lensing. We correct for the effect of gravitational lensing and find the redshift distribution for 1.4 mm selected sources with a median redshift of z = 3.1 ±0.3. Comparing to redshift distributions selected at shorter wavelengths from the literature, we show that selection wavelength affects the shape of the redshift distribution. Article in Journal/Newspaper South pole University of California: eScholarship The Astrophysical Journal 822 2 80 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
cosmology: observations early universe galaxies: evolution galaxies: high-redshift ISM: molecules astro-ph.GA Astronomical and Space Sciences Atomic Molecular Nuclear Particle and Plasma Physics Physical Chemistry (incl. Structural) Astronomy & Astrophysics |
spellingShingle |
cosmology: observations early universe galaxies: evolution galaxies: high-redshift ISM: molecules astro-ph.GA Astronomical and Space Sciences Atomic Molecular Nuclear Particle and Plasma Physics Physical Chemistry (incl. Structural) Astronomy & Astrophysics Strandet, ML Weiss, A Vieira, JD de Breuck, C Aguirre, JE Aravena, M Ashby, MLN Béthermin, M Bradford, CM Carlstrom, JE Chapman, SC Crawford, TM Everett, W Fassnacht, CD Furstenau, RM Gonzalez, AH Greve, TR Gullberg, B Hezaveh, Y Kamenetzky, JR Litke, K Ma, J Malkan, M Marrone, DP Menten, KM Murphy, EJ Nadolski, A Rotermund, KM Spilker, JS Stark, AA Welikala, N THE REDSHIFT DISTRIBUTION OF DUSTY STAR-FORMING GALAXIES FROM THE SPT SURVEY |
topic_facet |
cosmology: observations early universe galaxies: evolution galaxies: high-redshift ISM: molecules astro-ph.GA Astronomical and Space Sciences Atomic Molecular Nuclear Particle and Plasma Physics Physical Chemistry (incl. Structural) Astronomy & Astrophysics |
description |
We use the Atacama Large Millimeter/submillimeter Array (ALMA) in Cycle 1 to determine spectroscopic redshifts of high-redshift dusty star-forming galaxies (DSFGs) selected by their 1.4 mm continuum emission in the South Pole Telescope (SPT) survey. We present ALMA 3 mm spectral scans between 84 and 114 GHz for 15 galaxies and targeted ALMA 1 mm observations for an additional eight sources. Our observations yield 30 new line detections from CO, [C i], [N ii], H2O and NH3. We further present Atacama Pathfinder Experiment [C ii] and CO mid-J observations for seven sources for which only a single line was detected in spectral-scan data from ALMA Cycle 0 or Cycle 1. We combine the new observations with previously published and new millimeter/submillimeter line and photometric data of the SPT-selected DSFGs to study their redshift distribution. The combined data yield 39 spectroscopic redshifts from molecular lines, a success rate of >85%. Our sample represents the largest data set of its kind today and has the highest spectroscopic completeness among all redshift surveys of high-z DSFGs. The median of the redshift distribution is z = 3.9 ±0.4, and the highest-redshift source in our sample is at z = 5.8. We discuss how the selection of our sources affects the redshift distribution, focusing on source brightness, selection wavelength, and strong gravitational lensing. We correct for the effect of gravitational lensing and find the redshift distribution for 1.4 mm selected sources with a median redshift of z = 3.1 ±0.3. Comparing to redshift distributions selected at shorter wavelengths from the literature, we show that selection wavelength affects the shape of the redshift distribution. |
format |
Article in Journal/Newspaper |
author |
Strandet, ML Weiss, A Vieira, JD de Breuck, C Aguirre, JE Aravena, M Ashby, MLN Béthermin, M Bradford, CM Carlstrom, JE Chapman, SC Crawford, TM Everett, W Fassnacht, CD Furstenau, RM Gonzalez, AH Greve, TR Gullberg, B Hezaveh, Y Kamenetzky, JR Litke, K Ma, J Malkan, M Marrone, DP Menten, KM Murphy, EJ Nadolski, A Rotermund, KM Spilker, JS Stark, AA Welikala, N |
author_facet |
Strandet, ML Weiss, A Vieira, JD de Breuck, C Aguirre, JE Aravena, M Ashby, MLN Béthermin, M Bradford, CM Carlstrom, JE Chapman, SC Crawford, TM Everett, W Fassnacht, CD Furstenau, RM Gonzalez, AH Greve, TR Gullberg, B Hezaveh, Y Kamenetzky, JR Litke, K Ma, J Malkan, M Marrone, DP Menten, KM Murphy, EJ Nadolski, A Rotermund, KM Spilker, JS Stark, AA Welikala, N |
author_sort |
Strandet, ML |
title |
THE REDSHIFT DISTRIBUTION OF DUSTY STAR-FORMING GALAXIES FROM THE SPT SURVEY |
title_short |
THE REDSHIFT DISTRIBUTION OF DUSTY STAR-FORMING GALAXIES FROM THE SPT SURVEY |
title_full |
THE REDSHIFT DISTRIBUTION OF DUSTY STAR-FORMING GALAXIES FROM THE SPT SURVEY |
title_fullStr |
THE REDSHIFT DISTRIBUTION OF DUSTY STAR-FORMING GALAXIES FROM THE SPT SURVEY |
title_full_unstemmed |
THE REDSHIFT DISTRIBUTION OF DUSTY STAR-FORMING GALAXIES FROM THE SPT SURVEY |
title_sort |
redshift distribution of dusty star-forming galaxies from the spt survey |
publisher |
eScholarship, University of California |
publishDate |
2016 |
url |
https://escholarship.org/uc/item/1kh7k4sk https://escholarship.org/content/qt1kh7k4sk/qt1kh7k4sk.pdf https://doi.org/10.3847/0004-637x/822/2/80 |
op_coverage |
80 |
genre |
South pole |
genre_facet |
South pole |
op_source |
The Astrophysical Journal, vol 822, iss 2 |
op_relation |
qt1kh7k4sk https://escholarship.org/uc/item/1kh7k4sk https://escholarship.org/content/qt1kh7k4sk/qt1kh7k4sk.pdf doi:10.3847/0004-637x/822/2/80 |
op_rights |
public |
op_doi |
https://doi.org/10.3847/0004-637x/822/2/80 |
container_title |
The Astrophysical Journal |
container_volume |
822 |
container_issue |
2 |
container_start_page |
80 |
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1810480623989555200 |