Spitzer's View of the Candidate Cluster and Protocluster Catalog (CCPC)
  The Candidate Cluster and Protocluster Catalog (CCPC) contains 218 galaxy
overdensities com- posed of more than 2000 galaxies with spectroscopic
redshifts spanning the first few Gyrs after the Big Bang (2.0 < z < 6.6). We
use Spitzer archival data to track the underlying stellar mass of these
overdense regions in various temporal cross sections by building rest-frame
near-infrared luminosity functions across the span of redshifts.This exercise
maps the stellar growth of protocluster galaxies, as halos in the densest
environments should be the most massive from hierarchical accretion. The
characteristic apparent magnitude, m*(z), is relatively flat from 2.0 < z <
6.6, consistent with a passive evolution of an old stellar population. This
trend maps smoothly to lower redshift results of cluster galaxies from other
works. We find no difference in the luminosity
