1202.4489 (Audrey Galametz et al.)

The Mid-Infrared Environments of High-Redshift Radio Galaxies    [PDF]

Audrey Galametz, Daniel Stern, Carlos De Breuck, Nina Hatch, Jack Mayo, George Miley, Alessandro Rettura, Nick Seymour, S. Adam Stanford, Joel Vernet

Taking advantage of the impressive sensitivity of Spitzer to detect massive galaxies at high redshift, we study the mid-infrared environments of powerful, high-redshift radio galaxies at 1.2-0.1 (AB), in the fields of 48 radio galaxies at 1.21.2. Using a counts-in-cell analysis, we identify a field as overdense when 15 or more red IRAC sources are found within 1arcmin (i.e.,~0.5Mpc at 1.21.2.

View original: http://arxiv.org/abs/1202.4489