The Formation of Massive Cluster Galaxies

Details The Formation of Massive Cluster Galaxies The Formation of Massive Cluster Galaxies

2010-07-08

arxiv.org/abs/1007.1454v1

2010ApJ, 720, 284M

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

17 pages, 14 figures, accepted for publication in ApJ

Scientific paper

10.1088/0004-637X/720/1/284

We present composite 3.6 and 4.5 micron luminosity functions for cluster galaxies measured from the Spitzer Deep, Wide-Field Survey (SDWFS) for 0.3 1.3) we also witness a statistically significant (>5sigma) disagreement between the measured luminosity function and the continuation of the passive evolution model from lower redshifts. After considering potential systematic biases that might influence our highest redshift data points, we interpret the observed deviation as potential evidence for ongoing mass assembly at this epoch.

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