Prof. Dimitra Rigopoulou: Publications

Infrared power-law galaxies in the Chandra deep field-south: Active galactic nuclei and ultraluminous infrared galaxies

ASTROPHYSICAL JOURNAL 640:1 (2006) 167-184

Authors:

A Alonso-Herrero, PG Pérez-González, DM Alexander, GH Rieke, D Rigopoulou, E Le Floc'h, P Barmby, C Papovich, JR Rigby, FE Bauer, WN Brandt, E Egami, SP Willner, H Dole, JS Huang

Mid-infrared identifications of scuba galaxies in the CUDSS 14 hour field with the Spitzer space telescope

ASTROPHYSICAL JOURNAL 644:2 (2006) 778-791

Authors:

MLN Ashby, S Dye, J-S Huang, S Eales, SP Willner, TMA Webb, P Barmby, D Rigopoulou, E Egami, H McCracken, S Lilly, S Miyazaki, M Brodwin, M Blaylock, J Cadien, GG Fazio

Infrared luminous Lyman break galaxies: A population that bridges LBGs and scuba galaxies

Astrophysical Journal 634:1 I (2005) 137-141

Authors:

JS Huang, D Rigopoulou, SP Willner, C Papovich, C Shu, MLN Ashby, P Barmby, K Bundy, C Conselice, E Egami, PG Pérez-González, JL Rosenberg, HA Smith, G Wilson, GG Fazio

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)

Authors:

A Alonso-Herrero, PG Perez-Gonzalez, DM Alexander, GH Rieke, D Rigopoulou, E Le Floc'h, P Barmby, C Papovich, JR Rigby, FE Bauer, WN Brandt, E Egami, SP Willner, H Dole, J-S Huang

Infrared Luminous Lyman Break Galaxies: A Population that Bridges LBGs and SCUBA Galaxies

Astrophysical Journal 634 (2005) 137-141

Authors:

D Rigopoulou, J.-S.Huang, S.P.Willner, C.Papovich

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