Bibcode
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.
Bibliographical reference
The Astrophysical Journal Letters, Volume 728, Issue 1, article id. L4 (2011).
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2
2011
Citations
21
Refereed citations
19
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 μm, 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 μm 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
sun yr-1. They have low gas fractions and low
dynamical masses compared with 850 μm selected galaxies.
Related projects
Formation and Evolution of Galaxies: Observations in Infrared and other Wavelengths
This IAC research group carries out several extragalactic projects in different spectral ranges, using space as well as ground-based telescopes, to study the cosmological evolution of galaxies and the origin of nuclear activity in active galaxies. The group is a member of the international consortium which built the SPIRE instrument for the
Ismael
Pérez Fournon