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A Comprehensive View of a Strongly Lensed Planck-Associated Submillimeter Galaxy

Fu, Hai and Djorgovski, S. G. and Scoville, N. and Yan, L. and Riechers, D. A. and Bradford, M. and Vieira, J. (2012) A Comprehensive View of a Strongly Lensed Planck-Associated Submillimeter Galaxy. Astrophysical Journal, 753 (2). Art. No. 134. ISSN 0004-637X. doi:10.1088/0004-637X/753/2/134. https://resolver.caltech.edu/CaltechAUTHORS:20120731-153352787

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Abstract

We present high-resolution maps of stars, dust, and molecular gas in a strongly lensed submillimeter galaxy (SMG) at z = 3.259. HATLAS J114637.9–001132 is selected from the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) as a strong lens candidate mainly based on its unusually high 500 μm flux density (~300 mJy). It is the only high-redshift Planck detection in the 130 deg^2 H-ATLAS Phase-I area. Keck Adaptive Optics images reveal a quadruply imaged galaxy in the K band while the Submillimeter Array and the Jansky Very Large Array show doubly imaged 880 μm and CO(1→0) sources, indicating differentiated distributions of the various components in the galaxy. In the source plane, the stars reside in three major kpc-scale clumps extended over ~1.6 kpc, the dust in a compact (~1 kpc) region ~3 kpc north of the stars, and the cold molecular gas in an extended (~7 kpc) disk ~5 kpc northeast of the stars. The emissions from the stars, dust, and gas are magnified by ~17, ~8, and ~7 times, respectively, by four lensing galaxies at z ~ 1. Intrinsically, the lensed galaxy is a warm (T_(dust) ~ 40-65 K), hyper-luminous (L_(IR) ~ 1.7 × 10^(13) L_☉; star formation rate (SFR) ~2000 M_☉ yr^(–1)), gas-rich (M_(gas)/M_(baryon) ~ 70%), young (M_(stellar)/SFR ~ 20 Myr), and short-lived (M_(gas)/SFR ~ 40 Myr) starburst. With physical properties similar to unlensed z > 2 SMGs, HATLAS J114637.9–001132 offers a detailed view of a typical SMG through a powerful cosmic microscope.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0004-637X/753/2/134DOIArticle
http://iopscience.iop.org/0004-637X/753/2/134/PublisherArticle
ORCID:
AuthorORCID
Fu, Hai0000-0001-9608-6395
Djorgovski, S. G.0000-0002-0603-3087
Scoville, N.0000-0002-0438-3323
Yan, L.0000-0003-1710-9339
Riechers, D. A.0000-0001-9585-1462
Additional Information:© 2012 American Astronomical Society. Received 2012 February 8; accepted 2012 May 4; published 2012 June 22. We thank the anonymous referee for comments that helped improve the paper. H.F., A.C., J.L.W., and S.K. acknowledge support from NSF CAREER AST-0645427. I.P.F. is supported by the Spanish grants ESP2007-65812-C02-02 and AYA2010-21697-C05-04. S.G.D. acknowledges partial support from the NSF grant AST-0909182. G.D.Z. and M.N. acknowledge support from ASI/INAF agreement I/072/09/0 (“Planck LFI Activity of Phase E2”) and from MIUR through the PRIN 2009. Some of the data presented herein were obtained at the W.M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The Observatory was made possible by the generous financial support of the W.M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The Herschel-ATLAS is a project with Herschel, which is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. The H-ATLAS Web site is http://www.h-atlas.org/. The US participants acknowledge support from the NASA Herschel Science Center/JPL. Partly based on observations obtained with Planck (http://www.esa.int/Planck), an ESA science mission with instruments and contributions directly funded by ESA Member States, NASA, and Canada. Support for CARMA construction was derived from the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the James S. McDonnell Foundation, the Associates of the California Institute of Technology, the University of Chicago, 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. The William Herschel Telescope is operated on the island of La Palma by the Issac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias. Facilities: Keck:II (LGSAO/NIRC2), SMA, VLA, ING:Herschel, Sloan, UKIRT, WISE, Herschel, IRAM:30m, APEX, CARMA
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NSFAST-0645427
Ministerio de Ciencia e Innovación (MCINN)ESP2007-65812-C02-02
Ministerio de Economía y Competitividad (MINECO)AYA2010-21697-C05-04
NSFAST-0909182
Agenzia Spaziale Italiana (ASI)I/072/09/0
Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR)PRIN 2009
W. M. Keck FoundationUNSPECIFIED
NASA Herschel Science CenterUNSPECIFIED
ESA Member StatesUNSPECIFIED
NASAUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Kenneth T. and Eileen L. Norris FoundationUNSPECIFIED
James S. McDonnell FoundationUNSPECIFIED
Associates of the California Institute of TechnologyUNSPECIFIED
University of ChicagoUNSPECIFIED
states of California, Illinois, and MarylandUNSPECIFIED
Istituto Nazionale di Astrofisica (INAF)UNSPECIFIED
Subject Keywords: galaxies: formation; galaxies: individual (HATLAS J114637.9–001132); galaxies: interactions
Issue or Number:2
DOI:10.1088/0004-637X/753/2/134
Record Number:CaltechAUTHORS:20120731-153352787
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20120731-153352787
Official Citation: A Comprehensive View of a Strongly Lensed Planck-Associated Submillimeter Galaxy Hai Fu et al. 2012 ApJ 753 134
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32822
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:01 Aug 2012 15:06
Last Modified:09 Nov 2021 21:30

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