A COMPREHENSIVE VIEW OF A STRONGLY LENSED PLANCK-ASSOCIATED SUBMILLIMETER GALAXY

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.

D. L. Clements | S. Dye | I. Smail | Hai Fu | S. Maddox | S. Serjeant | S. G. Djorgovski | D. Herranz | I. Perez-Fournon | A. Cava | R. J. Ivison | A. Omont | J. Aguirre | M. J. Michalowski | E. Ibar | A. J. Baker | G. De Zotti | E. Valiante | P. P. van der Werf | M. Bradford | A. I. Harris | E. Jullo | D. Scott | R. Hopwood | H. Dannerbauer | A. M. Swinbank | A. Cooray | J. Vieira | R. Auld | S. Djorgovski | M. Rosenman | S. Maddox | S. Serjeant | M. Jarvis | J. Vieira | D. Riechers | A. Omont | I. Smail | E. Jullo | M. Gurwell | D. Clements | G. Zotti | H. Dole | D. Herranz | D. Scott | S. Kim | M. Baes | R. Lupu | L. Dunne | D. Frayer | L. Yan | P. D. Werf | S. Eales | R. Ivison | J. Aguirre | N. Scoville | R. Gavazzi | A. Swinbank | J. Wardlow | M. Michałowski | E. Valiante | H. Dannerbauer | A. Verma | R. Auld | M. Bradford | A. Cooray | I. Pérez-Fournon | H. Fu | A. Dariush | R. Ivison | M. Negrello | G. De Zotti | A. Baker | Lin Yan | E. Ibar | A. Cava | S. Dye | R. Hopwood | L. Leeuw | A. Harris | P. Martinez-Navajas | R. Bussmann | C. Hoyos | N. Scoville | L. Yan | H. Dole | M. J. Jarvis | L. Dunne | M. Negrello | N. Scoville | M. Baes | P. van der Werf | D. A. Riechers | A. Verma | S. Eales | A. Dariush | D. Frayer | M. Rosenman | R. S. Bussmann | M. Gurwell | R. Gavazzi | J. L. Wardlow | P. Martinez-Navajas | C. Hoyos | S. Kim | L. Leeuw | R. Lupu | Matt Bradford | L. Leeuw | D. Scott | C. Hoyos | I. Pérez-Fournon | P. V. D. Werf | P. Mart́ınez-Navajas | D. Scott

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