Hai Fu, E. Jullo, A. Cooray, R. S. Bussmann, R. J. Ivison, I. Pérez-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 ZottiH. 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. Martínez-Navajas, M. J. Michałowski, 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

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

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 deg2 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 × 1013 L &sun; star formation rate (SFR) ~2000 M &sun; 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.
Original languageEnglish
Article number134
JournalAstrophysical Journal
Issue number2
Publication statusPublished - 1 Jul 2012

Keywords / Materials (for Non-textual outputs)

  • galaxies: formation
  • galaxies: individual (HATLAS J114637.9–001132)
  • galaxies: interactions


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