A Comprehensive View of a Strongly Lensed Planck-Associated Submillimeter Galaxy
| Autor: | 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., Michalowski, M. J., Negrello, M., Omont, A., Rosenman, M., Scott, D., Serjeant, S., Smail, I., Swinbank, A. M., Valiante, E., Verma, A., Vieira, J., Wardlow, J. L., van der Werf, P. |
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| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/0004-637X/753/2/134 |
| Popis: | We present high-resolution maps of stars, dust, and molecular gas in a strongly lensed submillimeter galaxy (SMG) at z = 3.259. HATLAS12--00 is selected from the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) as a strong lens candidate mainly based on its unusually high 500um flux density (~300 mJy). It is the only high-redshift Planck detection in the 130 deg^2 H-ATLAS Phase 1 area. Keck Adaptive Optics images reveal a quadruply imaged galaxy in the K-band while the Submillimeter Array and the Extended Very Large Array show doubly imaged 880um 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 emission 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 ~ 1.7e13 Lsun; SFR ~ 2000 Msun/yr), gas-rich (M_gas/M_baryon ~ 70%), young (M_stellar/SFR ~ 20 Myr), and short-lived (M_gas/SFR ~ 40 Myr) starburst, without a significant active galactic nucleus. With physical properties similar to unlensed z > 2 SMGs, HATLAS12--00 offers a detailed view of a typical SMG through a powerful cosmic microscope. Comment: ApJ accepted version. Minor revisions. 12 pages, 4 figures, emulateapj style |
| Databáze: | arXiv |
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