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The Second-generation z (Redshift) and Early Universe Spectrometer. I. First-light Observation of a Highly Lensed Local-ulirg Analog at High-z

Ferkinhoff, Carl and Brisbin, Drew and Parshley, Stephen and Nikola, Thomas and Stacey, Gordon J. and Schoenwald, Justin and Higdon, James L. and Higdon, Sarah J. U. and Verma, Aprajita and Riechers, Dominik and Hailey-Dunsheath, Steven and Menten, Karl M. and Güsten, Rolf and Weiss, Axel and Irwin, Kent and Cho, Hsiao M. and Niemack, Michael and Halpern, Mark and Amiri, Mandana and Hasselfield, Matthew and Wiebe, D. V. and Ade, Peter A. R. and Tucker, Carol E. (2014) The Second-generation z (Redshift) and Early Universe Spectrometer. I. First-light Observation of a Highly Lensed Local-ulirg Analog at High-z. Astrophysical Journal, 780 (2). Art. No. 142. ISSN 0004-637X.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Brisbin, Drew0000-0002-4795-419X
Higdon, James L.0000-0003-1397-0586
Higdon, Sarah J. U.0000-0002-4021-7453
Riechers, Dominik0000-0001-9585-1462
Hailey-Dunsheath, Steven0000-0002-8504-7988
Menten, Karl M.0000-0001-6459-0669
Weiss, Axel0000-0003-4678-3939
Halpern, Mark0000-0002-1760-0868
Ade, Peter A. R.0000-0002-5127-0401
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.
Funding AgencyGrant Number
Georgia Southern UniversityUNSPECIFIED
Subject Keywords: galaxies: active; galaxies: high-redshift; galaxies: individual (H-ATLAS J091043.1-000322); galaxies: starburst; submillimeter: galaxies
Issue or Number:2
Record Number:CaltechAUTHORS:20140225-075642175
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Official Citation:The Second-generation z (Redshift) and Early Universe Spectrometer. I. First-light Observation of a Highly Lensed Local-ulirg Analog at High-z Carl Ferkinhoff et al. 2014 ApJ 780 142
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43966
Deposited By: Ruth Sustaita
Deposited On:25 Feb 2014 16:34
Last Modified:09 Mar 2020 13:18

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