The role of the LIRG and ULIRG phases in the evolution of Ks-selected galaxies

Karina Caputi (1) , Herve Dole (1) , Guilaine Lagache (1) , R. J. Mclure (2) , James S. Dunlop (2) , Jean-Loup Puget (1) , E. Le Floc'H (3, 4) , Pablo G. Pérez-González (3)

1 IAS - Institut d'astrophysique spatiale
2 Edin. - University of Edinburgh
3 Steward Observatory, University of Arizona
4 GEPI - Galaxies, Etoiles, Physique, Instrumentation

Aims.We investigate the role of the luminous infrared galaxy (LIRG) and ultra-luminous infrared galaxy (ULIRG) phases in the evolution of K_s-selected galaxies and, in particular, Extremely Red Galaxies (ERGs).
Methods: .With this aim, we compare the properties of a sample of 2905 K_s1×10¹¹ M_&sun; assembled at redshift z=0.5. A minimum of 65% of the galaxies with M>2.5×10¹¹ M_&sun; at z ≈ 2{-}3 are ULIRGs at those redshifts. 60% of the ULIRGs in our sample have the characteristic colours of ERGs. Conversely, 40% of the ERGs with stellar mass M>1.3 ×10¹¹ M_&sun; at 1.5

Domaines: Astrophysique [astro-ph]

Karina Caputi, Herve Dole, Guilaine Lagache, R. J. Mclure, James S. Dunlop, et al.. The role of the LIRG and ULIRG phases in the evolution of Ks-selected galaxies. Astronomy and Astrophysics - A&A, 2006, 454, pp.143-150. ⟨10.1051/0004-6361:20054553⟩. ⟨hal-03729596⟩