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Molecular Gas in the z = 1.2 Ultraluminous Merger GOODS J123634.53+621241.3

Frayer, David T. and Koda, Jin and Pope, Alexandra and Huynh, Minh T. and Chary, Ranga-Ram and Scott, Douglas and Dickinson, Mark and Bock, Douglas C.-J. and Carpenter, John M. and Hawkins, David and Hodges, Mark and Lamb, James W. and Plambeck, Richard L. and Pound, Marc W. and Scott, Stephen L. and Scoville, Nicholas Z. and Woody, David P. (2008) Molecular Gas in the z = 1.2 Ultraluminous Merger GOODS J123634.53+621241.3. Astrophysical Journal Letters, 680 (1). L21-L24. ISSN 2041-8205. doi:10.1086/589830. https://resolver.caltech.edu/CaltechAUTHORS:FRAapjl08

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Abstract

We report the detection of CO(2→1) emission from the z = 1.2 ultraluminous infrared galaxy (ULIRG) GOODS J123634.53+621241.3 (also known as the submillimeter galaxy GN 26). These observations represent the first discovery of high-redshift CO emission using the new Combined Array for Research in Millimeter-Wave Astronomy (CARMA). Of all high-redshift (z > 1) galaxies within the GOODS-North field, this source has the largest far-infrared (FIR) flux observed in the Spitzer 70 and 160 mm bands. The CO redshift confirms the optical identification of the source, and the bright CO(2→1) line suggests the presence of a large molecular gas reservoir of about 7 x 10^10 M☉. The infrared-to-CO luminosity ratio of L(IR)/L'(CO) p 80±30 L☉ (K km s^-1 pc^2)^-1 is slightly smaller than the average ratio found in local ULIRGs and high-redshift submillimeter galaxies. The short star formation timescale of about 70 Myr is consistent with a starburst associated with the merger event and is much shorter than the timescales for spiral galaxies and estimates made for high-redshift galaxies selected on the basis of their B-z and z-K colors.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1086/589830DOIArticle
ORCID:
AuthorORCID
Frayer, David T.0000-0003-1924-1122
Koda, Jin0000-0002-8762-7863
Pope, Alexandra0000-0001-8592-2706
Chary, Ranga-Ram0000-0001-7583-0621
Scott, Douglas0000-0002-6878-9840
Dickinson, Mark0000-0001-5414-5131
Carpenter, John M.0000-0003-2251-0602
Scoville, Nicholas Z.0000-0002-0438-3323
Additional Information:© 2008. The American Astronomical Society. Received 2008 February 29; accepted 2008 May 2; published 2008 May 19. Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the Associates of the California Institute of Technology, the states of California, Illinois, and Maryland, and the National Science Foundation. Ongoing CARMA development and operations are supported by the National Science Foundation under a cooperative agreement, and by the CARMA partner universities. This work is based in part on observations made with the Spitzer Space Telescope and has made use of the NASA/IPAC Extragalactic Database (NED), both of which are operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. The optical image was obtained from the Multimission Archive at the Space Telescope Science Institute (MAST).
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
Kenneth T. and Eileen L. Norris FoundationUNSPECIFIED
Associates of the California Institute of TechnologyUNSPECIFIED
State of CaliforniaUNSPECIFIED
State of IllinoisUNSPECIFIED
State of MarylandUNSPECIFIED
NSFUNSPECIFIED
Subject Keywords:galaxies: evolution—galaxies: formation—galaxies: individual (GOODS J123634.53+621241.3)—galaxies: starburst
Issue or Number:1
DOI:10.1086/589830
Record Number:CaltechAUTHORS:FRAapjl08
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:FRAapjl08
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12748
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:22 Dec 2008 20:19
Last Modified:08 Nov 2021 22:32

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