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

作者：Fu Hai^*; Jullo E; Cooray A; Bussmann R S; Ivison R J; Perez Fournon I; Djorgovski S G; Scoville N; Yan L; Riechers D A; Aguirre J; Auld R; Baes M; Baker A J; Bradford M; Cava A; Clements D L; Dannerbauer H; Dariush A; De Zotti G; Dole H; Dunne L; Dye S; Eales S; Frayer D; Gavazzi R; Gurwell M; Harris A I; Herranz D; Hopwood R; Hoyos C; Ibar E; Jarvis M J; Kim S; Leeuw L; Lupu R; Maddox S; Martinez Navajas P

来源：Astrophysical Journal, 2012, 753(2): 134.

DOI：10.1088/0004-637X/753/2/134

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

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 -%26gt; 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 %26gt; 2 SMGs, HATLAS J114637.9-001132 offers a detailed view of a typical SMG through a powerful cosmic microscope.

• 出版日期2012-7-10
• 单位中国地震局