Mid-Infrared Identifications of SCUBA Galaxies in the CUDSS 14-Hour Field with the Spitzer Space Telescope
(2006)
Infrared power-law galaxies in the Chandra deep field-south:: Active galactic nuclei and ultraluminous infrared galaxies
ASTROPHYSICAL JOURNAL 640:1 (2006) 167-184
Mid-infrared identifications of scuba galaxies in the CUDSS 14 hour field with the Spitzer space telescope
ASTROPHYSICAL JOURNAL 644:2 (2006) 778-791
Infrared luminous Lyman break galaxies: A population that bridges LBGs and scuba galaxies
Astrophysical Journal 634:1 I (2005) 137-141
Abstract:
A deep mid- and far-infrared survey in the extended Groth strip (EGS) area gives 3.6 to 8 μm 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 range in apparent dust content relative to stellar mass. About 5% of LBGs are luminous at all wavelengths, with powerful emission at rest 6 μm. In the rest 0.9 to 2 μm 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 Submillimeter Common-User Bolometric Array (SCUBA) sources: both are massive and dusty starburst galaxies at 2 < z < 3; their stellar mass is larger than 10 11 M⊙. We suggest that these galaxies are the progenitors of present-day giant elliptical galaxies, with a substantial fraction of their stars already formed at z ≈ 3. © 2005. The American Astronomical Society. All rights reserved.Infrared power-law galaxies in the Chandra Deep Field South: AGN and ULIRGs
(2005)