Dependence of halo bias on mass and environment
  The simplest analyses of halo bias assume that halo mass alone determines
halo clustering. However, if the large scale environment is fixed, then halo
clustering is almost entirely determined by environment, and is almost
completely independent of halo mass. We show why. Our analysis is useful for
studies which use the environmental dependence of clustering to constrain
cosmological and galaxy formation models. It also shows why many correlations
between galaxy properties and environment are merely consequences of the
underlying correlations between halos and their environments, and provides a
framework for quantifying such inherited correlations.
