The Host Galaxies of Tidal Disruption Events
  Recent studies of Tidal Disruption Events (TDEs) have revealed unexpected
correlations between the TDE rate and the large-scale properties of the host
galaxies. In this review, we present the host galaxy properties of all TDE
candidates known to date and quantify their distributions. We consider
throughout the differences between observationally-identified types of TDEs and
differences from spectroscopic control samples of galaxies. We focus here on
the black hole and stellar masses of TDE host galaxies, their star formation
histories and stellar populations, the concentration and morphology of the
optical light, the presence of AGN activity, and the extra-galactic environment
of the TDE hosts. We summarize the state of several possible explanations for
the links between the TDE rate and host galaxy type. We present estimates of
the TDE rate for different host galaxy types and quantify the degree to which
rate enhancement in some types results in rate suppression in others. We
discuss the possibilities for using TDE host galaxies to assist in identifying
TDEs in upcoming large transient surveys and possibilities for TDE observations
to be used to study their host galaxies.
