Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-07-29
Astrophys.J.634:137-141,2005
Astronomy and Astrophysics
Astrophysics
Accepted by ApJ
Scientific paper
10.1086/491697
A deep mid- and far-infrared survey in the Extended Groth Strip (EGS) area gives 3.6 to 8\micron flux densities or upper limits for 253 Lyman Break Galaxies (LBGs). The LBGs are a diverse population but with properties correlated with luminosity. The LBGs show a factor of 30 range in indicated stellar mass and a factor of 10 in apparent dust content relative to stellar mass. About 5% of LBGs are luminous at all wavelengths with powerful emission at rest 6\micron. In the rest 0.9 to 2\micron spectral range these galaxies have stellar spectral slopes with no sign of an AGN power law component, suggesting that their emission is mainly powered by intensive star formation. Galaxies in this luminous population share the infrared properties of cold SCUBA sources: both are massive and dusty starburst galaxies at $2
Ashby Matt L. N.
Barmby Pauline
Bundy Kevin
Conselice Chris
Egami Eiichi E.
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