IAU Symposium Abstract S186-056P
On the Universality of the M-sigma relation of Ellipticals
Y. Funato1 and J. Makino2
1 Univ. of Tokyo, Tokyo, Japan, < email@example.com >
2 Univ. of Tokyo, Tokyo, Japan, < firstname.lastname@example.org >
We studied the evolution of structure of galaxies through many
encounters between two galaxies. From the result, we found that the
individual galaxies evolve so as to satisfy the relation M proportional to
sigma4 through interations with each other in galaxy clusters.
Firstly, we present the result of numerical experiment of an encounter
of two galaxies. Scondly, we show a semi-analytic study on the
evolution of structure of ellipticals in galaxy clusters, where
galaxies suffer from frequent encounters with each other. As a
result, we derived the relation M proportional to
sigma4 as a steady state
of ellipticals in a cluster environment.