Spitzer Observations of Massive, Red Galaxies at High Redshift - Université Paris Cité Accéder directement au contenu
Article Dans Une Revue The Astrophysical Journal Année : 2006

Spitzer Observations of Massive, Red Galaxies at High Redshift

Résumé

We study massive galaxies at z~1-3.5 using HST optical imaging, ground-based near-IR imaging, and Spitzer observations at 3-24 mum. From Ks-selected galaxies in the ~=130 arcmin2 GOODS-S field, we identify 153 distant red galaxies (DRGs) with (J-Ks)Vega>=2.3. This sample is approximately complete in stellar mass for passively evolving galaxies above 1011 Msolar and z~4-6 mag) starbursts (at zmed~1.7). Very few DRGs (=1011 Msolar have specific star formation rates (SFRs per unit mass) including the reradiated far-IR emission that range from 0.2 to 10 Gyr-1. Based on the X-ray luminosities and rest-frame near-IR colors, roughly one-quarter of the DRGs contain AGNs, implying that the growth of supermassive black holes coincides with the formation of massive galaxies. At 1.5=1011 Msolar have an integrated specific SFR less than the global value and more than an order of magnitude lower than that for massive DRGs. At z
Fichier non déposé

Dates et versions

hal-03786000 , version 1 (23-09-2022)

Identifiants

Citer

Casey Papovich, Leonidas A. Moustakas, Mark Dickinson, E. Le Floc'H, George H. Rieke, et al.. Spitzer Observations of Massive, Red Galaxies at High Redshift. The Astrophysical Journal, 2006, 640, pp.92-113. ⟨hal-03786000⟩
13 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More