The MassiveBlack-II Simulation: The Evolution of Halos and Galaxies to
  z~0
  (Abridged for arXiv)We investigate the properties of halos, galaxies and
blackholes to z=0 in the high resolution hydrodynamical simulation
MassiveBlack-II (MBII) which evolves a LCDM cosmology in a comoving volume
Vbox=100(Mpc/h)^3. MBII is the highest resolution simulation of this size which
includes a self-consistent model for star formation, black hole accretion and
associated feedback. We provide a simulation browser web application which
enables interactive search and tagging of halos, subhalos and their properties
and publicly release our galaxy catalogs. Our analysis of the halo mass
function (MF) in MBII reveals that baryons have strong effects, with changes in
the halo abundance of 20-35% below the knee of the MF (Mhalo < 10^13.2 Msun/h
at z=0) when compared to fits based on dark matter only simulations. We provide
a fitting function for the halo MF out to redshift z=11 and discuss how the
onset of non-universality in the MF limits the accuracy of our fit. We study
the halo occupation distribution and clustering of galaxies, in particular the
evolution and scale dependence of stochasticity and bias finding reasonable
agreement with observational data. The shape of the cosmic spectral energy
distribution predicted by MBII is consistent with observations, but lower in
amplitude. The Galaxy Stellar Mass Function (GSMF) function is broadly
consistent with observations at z>=2. At z<2, the population of passive low
mass (for M*<10^9 Msun) galaxies in MBII makes the GSMF too steep compared to
observations whereas at the high mass end (M*>10^11 Msun) galaxies hosting
bright AGNs make significant contributions to the GSMF. The quasar bolometric
luminosity function is also largely consistent with observations. We note
however that more efficient AGN feedback (beyond simple thermal coupling used
here) is likely necessary for the largest, rarest objects/clusters at low
redshifts.
