The Second-generation z (Redshift) and Early Universe Spectrometer. I. First-light Observation of a Highly Lensed Local-ulirg Analog at High-z
Creators
- Ferkinhoff, Carl1
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Brisbin, Drew1
- Parshley, Stephen1
- Nikola, Thomas1
- Stacey, Gordon J.1
- Schoenwald, Justin1
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Higdon, James L.2
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Higdon, Sarah J. U.2
- Verma, Aprajita3
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Riechers, Dominik1
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Hailey-Dunsheath, Steven4
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Menten, Karl M.5
- Güsten, Rolf5
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Weiss, Axel5
- Irwin, Kent
- Cho, Hsiao M.
- Niemack, Michael1
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Halpern, Mark6
- Amiri, Mandana6
- Hasselfield, Matthew7
- Wiebe, D. V.6
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Ade, Peter A. R.8
- Tucker, Carol E.8
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1.
Cornell University
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2.
Georgia Southern University
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3.
University of Oxford
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4.
California Institute of Technology
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5.
Max Planck Institute for Radio Astronomy
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6.
University of British Columbia
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7.
Princeton University
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8.
Cardiff University
Abstract
We recently commissioned our new spectrometer, the second-generation z(Redshift) and Early Universe Spectrometer (ZEUS-2) on the Atacama Pathfinder Experiment telescope. ZEUS-2 is a submillimeter grating spectrometer optimized for detecting the faint and broad lines from distant galaxies that are redshifted into the telluric windows from 200 to 850 μm. It uses a focal plane array of transition-edge sensed bolometers, the first use of these arrays for astrophysical spectroscopy. ZEUS-2 promises to be an important tool for studying galaxies in the years to come because of its synergy with Atacama Large Millimeter Array and its capabilities in the short submillimeter windows that are unique in the post-Herschel era. Here, we report on our first detection of the [C II] 158 μm line with ZEUS-2. We detect the line at z ~ 1.8 from H-ATLAS J091043.1–000322 with a line flux of (6.44 ± 0.42) × 10^(–18) W m^(–2). Combined with its far-IR luminosity and a new Herschel-PACS detection of the [O I] 63 μm line, we model the line emission as coming from a photo-dissociation region with far-ultraviolet radiation field, G ~ 2 × 10^4 G_0, gas density, n ~ 1 × 10^3 cm^(–3) and size between ~0.4 and 1 kpc. On the basis of this model, we conclude that H-ATLAS J091043.1–000322 is a high-redshift analog of a local ultra-luminous IR galaxy; i.e., it is likely the site of a compact starburst caused by a major merger. Further identification of these merging systems is important for constraining galaxy formation and evolution models.
Additional Information
© 2014 American Astronomical Society. Received 2013 August 16; accepted 2013 November 5; published 2013 December 19. Part of this work is based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA), and the Canadian AstronomyData Centre (CADC/NRC/CSA). ZEUS-2 development and observations are supported by NSF grants AST-0705256, AST-0722220, AST-1105874, and AST-1109476; NASA grant NNX10AM09H; and a grant from Georgia Southern University. C.F. thanks R. Wang for sharing her list of high-z [C ii] detections from the literature and in Wang et al. (2013). Last, the authors thank the anonymous referees for their helpful comments and acknowledge the APEX staff whose excellent support helped to make this work possible.Attached Files
Published - 0004-637X_780_2_142.pdf
Submitted - 1311.1515.pdf
Files
0004-637X_780_2_142.pdf
Additional details
Identifiers
- Eprint ID
- 43966
- Resolver ID
- CaltechAUTHORS:20140225-075642175
Related works
- Describes
- http://arxiv.org/abs/1311.1515 (URL)
Funding
- NSF
- AST-0705256
- NSF
- AST-0722220
- NSF
- AST-1105874
- NSF
- AST-1109476
- NASA
- NNX10AM09H
- Georgia Southern University
Dates
- Created
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2014-02-25Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field