Formation of Compact Clusters from High Resolution Hybrid Cosmological
  Simulations
  The early Universe hosted a large population of small dark matter `minihalos'
that were too small to cool and form stars on their own. These existed as
static objects around larger galaxies until acted upon by some outside
influence. Outflows, which have been observed around a variety of galaxies, can
provide this influence in such a way as to collapse, rather than disperse the
minihalo gas. Gray & Scannapieco performed an investigation in which idealized
spherically-symmetric minihalos were struck by enriched outflows. Here we
perform high-resolution cosmological simulations that form realistic minihalos,
which we then extract to perform a large suite of simulations of
outflow-minihalo interactions including non-equilibrium chemical reactions. In
all models, the shocked minihalo forms molecules through non-equilibrium
reactions, and then cools to form dense chemically homogenous clumps of
star-forming gas. The formation of these high-redshift clusters will be
observable with the next generation of telescopes, and the largest of them
should survive to the present day, having properties similar to halo globular
clusters.
