Studying the emergence of the red sequence through galaxy clustering:
  host halo masses at z > 2
  We use the UKIDSS Ultra-Deep Survey, the deepest degree-scale near-infrared
survey to date, to investigate the clustering of star-forming and passive
galaxies to z ~ 3.5. Our new measurements include the first determination of
the clustering for passive galaxies at z > 2, which we achieve using a
cross-correlation technique. We find that passive galaxies are the most
strongly clustered, typically hosted by massive dark matter halos with M_halo >
5 x 10^12 M_sun irrespective of redshift or stellar mass. Our findings are
consistent with models in which a critical halo mass determines the transition
from star-forming to passive galaxies. Star-forming galaxies show no strong
correlation between stellar mass and halo mass, but passive galaxies show
evidence for an anti-correlation; low-mass passive galaxies appear, on average,
to be located in the most massive halos. These results can be understood if the
termination of star formation is most efficient for galaxies of low stellar
mass in very dense environments.
