Figure 7: Final density profiles from a set of 10:1 merger simulations in which each galaxy contained a black hole (a-d) and in which neither galaxy contained a black hole (e-g) [136]. The four thin curves in each frame correspond to four different pre-merger orbits. (a), (e) Space density of stars initially associated with the secondary galaxy; thick curves are the initial density profile. (b), (f) Space density of stars initially associated with the primary galaxy; thick curves are the initial density profile. (c), (g) Space density of all stars. Lower thick curves are the initial density profile of the primary galaxy, and upper thick curves are the superposition of the initial density profiles of the primary and secondary galaxies. Lines of logarithmic slope -1 and -2 are also shown. (d), (h) Logarithmic slope of the surface density profiles of the merger remnants. Thick curves correspond to the initial primary galaxy.