Galaxy merging and the Fundamental Plane of elliptical galaxies

Details Galaxy merging and the Fundamental Plane of elliptical galaxies Galaxy merging and the Fundamental Plane of elliptical galaxies

2001-12-06

arxiv.org/abs/astro-ph/0112133v1

Astronomy and Astrophysics

Astrophysics

2 pages, to appear on ESO Astrophysics Symposia "The Mass of Galaxies at Low and High Redshift", R. Bender and A. Renzini, eds

Scientific paper

We present preliminary results of numerical simulations of dissipationless merging of stellar systems, aimed at exploring the consequences of merging between gas free, spheroidal systems. In particular, we study the dynamical and structural characteristics of hierarchical merging between equal mass stellar systems, and we compare the properties of the end-products with the most important structural and dynamical scaling relations obeyed by spheroids. In the explored hierarchy of four successive mergings we find that the FP tilt is marginally conserved, but both the Faber-Jackson and Kormendy relations are not conserved.

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