Title:
Supermassive black holes and stellar objects in galaxy mergers

Abstract:
Galaxy mergers are the direct descendent of the Λ cold dark matter cosmology. 
During the merging of galaxies and the formation of the supermassive black hole binary, 
black holes and surrounding stars undergo a dramatic evolution, 
which results in very complicated evolution of SMBHs and stars. 
We focus on the dynamical co-evolution of the above systems in gas poor mergers. 
By combining theoretical analysis and high precision large scale direct N-body simulation, 
we systematically and self-consistently study the evolution of SMBHs and tidal disruption. 
Our results indicate that the tidal disruption rate can be significantly boosted 
during the formation of the bound SMBH binary system, 
and the disrupted stars may have different orbital eccentricities 
in different stages of the merger.