Please use this identifier to cite or link to this item: http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1849
SPITZER IMAGING OF HERSCHEL-ATLAS GRAVITATIONALLY LENSED SUBMILLIMETER SOURCES
Itziar Aretxaga
David Hughes
Acceso Abierto
Atribución-NoComercial-SinDerivadas
Galaxies
Individual (SDP.81: H-ATLAS J090311.6+003906, SDP.130: H-ATLAS J091305.0-005343)
Galaxies: starburst
Gravitational lensing: strong
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 Aᵥ ∼ 4–5 and star formation rates of ∼100Mꙩ yr⁻¹. They have low gas fractions and low dynamical masses compared with 850 μm selected galaxies.
The Astrophysical Journal Letters
10-02-2011
Artículo
Inglés
Estudiantes
Investigadores
Público en general
Hopwood, R., et al., (2011), SPITZER IMAGING OF HERSCHEL-ATLAS GRAVITATIONALLY LENSED SUBMILLIMETER SOURCES, The Astrophysical Journal Letters, Vol. 728(L4):1-6.
ASTRONOMÍA Y ASTROFÍSICA
Versión aceptada
acceptedVersion - Versión aceptada
Appears in Collections:Artículos de Astrofísica

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