Spitzer Imaging of Herschel-atlas Gravitationally Lensed Submillimeter Sources
We present physical properties of two submillimeter selected gravitationally lensed sources, identified in the Herschel Astrophysical Terahertz Large Area Survey. These submillimeter galaxies (SMGs) have flux densities >100 mJy at 500 Delta *mm, but are not visible in existing optical imaging. We...
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| Veröffentlicht in: | Astrophysical journal. Letters 2011-02, Vol.728 (1), p.L4-jQuery1323918355911='48' |
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| creator | Hopwood, R Wardlow, J Cooray, A Khostovan, A. A Kim, S Negrello, M da Cunha, E Burgarella, D Aretxaga, I Auld, R Baes, M Barton, E Bertoldi, F Bonfield, D. G Blundell, R Buttiglione, S Cava, A Clements, D. L Cooke, J Dannerbauer, H Dariush, A de Zotti, G Dunlop, J Dunne, L Dye, S Eales, S Fritz, J Frayer, D Gurwell, M. A Hughes, D. H Ibar, E Ivison, R. J Jarvis, M. J Lagache, G Leeuw, L Maddox, S Michałowski, M. J Omont, A Pascale, E Pohlen, M Rigby, E Rodighiero, G Scott, D Serjeant, S Smail, I Smith, D. J. B Temi, P Thompson, M. A Valtchanov, I van der Werf, P Verma, A Vieira, J. D |
| description | We present physical properties of two submillimeter selected gravitationally lensed sources, identified in the Herschel Astrophysical Terahertz Large Area Survey. These submillimeter galaxies (SMGs) have flux densities >100 mJy at 500 Delta *mm, but are not visible in existing optical imaging. We fit light profiles to each component of the lensing systems in Spitzer IRAC 3.6 and 4.5 Delta *mm data and successfully disentangle the foreground lens from the background source in each case, providing important constraints on the spectral energy distributions (SEDs) of the background SMG at rest-frame optical-near-infrared wavelengths. The SED fits show that these two SMGs have high dust obscuration with A V ~ 4-5 and star formation rates of ~100 M yr--1. They have low gas fractions and low dynamical masses compared with 850 Delta *mm selected galaxies. |
| doi_str_mv | 10.1088/2041-8205/728/1/L4 |
| format | Article |
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They have low gas fractions and low dynamical masses compared with 850 Delta *mm selected galaxies.</description><subject>Astrophysics</subject><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>ENERGY SPECTRA</subject><subject>FLUX DENSITY</subject><subject>GALAXIES</subject><subject>PHYSICAL PROPERTIES</subject><subject>Sciences of the Universe</subject><subject>SPECTRA</subject><issn>2041-8205</issn><issn>2041-8213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqNkU1LxDAQhoso-PkHPBU8iIe6k7TppkcRdYWih9VzSLMTN5I2NckK6683S8WLFy8zw8zzvgwzWXZO4JoA5zMKFSk4BTabUz4js7bay45-mqTc_62BHWbHIbwDUKgJP8qelqOJX-jzx16-meEtdzpfoA9qjbaQ0cqQP3j5aaKMxg3S2m3e4hBwlS83XW-sNT3GJF-6jVcYTrMDLW3As598kr3e373cLor2-eHx9qYtVMXmMUUEjXy1YkQiakJV01QM6qbsOtqllQFkWbNGA9NaIleSNRWHMk1URzmWJ9nF5OtCNCIoE1GtlRsGVFFQwmpghCbqaqLW0orRm176rXDSiMVNK3Y9IFWZbOtPktjLiR29-9hgiKI3QaG1ckC3CaKhwKGeVyyRdCKVdyF41L_WBMTuG2J3bLE7tkjfEES0VRIVk8i48X_81V_-LyfGlS6_Af6Hlmw</recordid><startdate>20110210</startdate><enddate>20110210</enddate><creator>Hopwood, R</creator><creator>Wardlow, J</creator><creator>Cooray, A</creator><creator>Khostovan, A. 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| subjects | Astrophysics ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ENERGY SPECTRA FLUX DENSITY GALAXIES PHYSICAL PROPERTIES Sciences of the Universe SPECTRA |
| title | Spitzer Imaging of Herschel-atlas Gravitationally Lensed Submillimeter Sources |
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