University of Hertfordshire

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  • 906144

    Accepted author manuscript, 954 KB, PDF document

  • Hai Fu
  • E. Jullo
  • A. Cooray
  • R. S. Bussmann
  • R. J. Ivison
  • I. Perez-Fournon
  • S.G. Djorgovski
  • N. Scoville
  • L. Yan
  • D. A. Riechers
  • J. Aguirre
  • R. Auld
  • M. Baes
  • A. J. Baker
  • M. Bradford
  • A. Cava
  • D. L. Clements
  • H. Dannerbauer
  • A. Dariush
  • G. De Zotti
  • And 31 others
  • H. Dole
  • L. Dunne
  • S. Dye
  • S. Eales
  • D. Frayer
  • R. Gavazzi
  • M. Gurwell
  • A.I. Harris
  • D. Herranz
  • R. Hopwood
  • C. Hoyos
  • E. Ibar
  • M.J. Jarvis
  • S. Kim
  • L. Leeuw
  • R. Lupu
  • S. Maddox
  • P. Martinez-Navajas
  • M. J. Michalowski
  • M. Negrello
  • A. Omont
  • M. Rosenman
  • D. Scott
  • S. Serjeant
  • I. Smail
  • A.M. Swinbank
  • E. Valiante
  • A. Verma
  • J. Vieira
  • J. L. Wardlow
  • P. van der Werf
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Original languageEnglish
Article number134
Number of pages12
JournalThe Astrophysical Journal
Volume753
Issue2
DOIs
Publication statusPublished - 10 Jul 2012

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 mu m flux density (similar to 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 mu m 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 similar to 1.6 kpc, the dust in a compact (similar to 1 kpc) region similar to 3 kpc north of the stars, and the cold molecular gas in an extended (similar to 7 kpc) disk similar to 5 kpc northeast of the stars. The emissions from the stars, dust, and gas are magnified by similar to 17, similar to 8, and similar to 7 times, respectively, by four lensing galaxies at z similar to 1. Intrinsically, the lensed galaxy is a warm (T-dust similar to 40-65 K), hyperluminous (L-IR similar to 1.7 x 10(13) L-circle dot; star formation rate (SFR) similar to 2000 M-circle dot similar to yr(-1)), gas-rich (M-gas/M-baryon similar to 70%), young (M-stellar/SFR similar to 20 Myr), and short-lived (M-gas/SFR similar to 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.

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