Effect of the Environment on the Fundamental Plane of Elliptical Galaxies

Evstigneeva, E. A.; Reshetnikov, V. P.; Sotnikova, N. Ya.

Effect of the Environment on the Fundamental Plane of Elliptical Galaxies

Authors

Evstigneeva, E. A.

Reshetnikov, V. P.

Sotnikova, N. Ya.

Description

We present an analysis of interacting E/S0 galaxies location on the Fundamental Plane. Using the NEMO package, we performed N-body simulations of close encounters and mergers between two spherical galaxies. We followed how structural and dynamical parameters (central density, half-mass radius and velocity dispersion)of galaxies are changed during the encounter. We analysed the dependence of these changes on initial mass concentration and presence of dark halo. The results of our simulations are used to discuss the Fundamental Plane for interacting early-type galaxies.
Poster presented at JENAM-2000 (Joint European and National Astronomical meeting - S02. Morphology and dynamics of stellar systems: star clusters, galactic arms and rings)