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Isolated and Interacting Galaxies: Simulations with GRAPE

Published online by Cambridge University Press:  26 May 2016

E. Athanassoula
E. Athanassoula*
Affiliation:
Observatoire de Marseille, 2 place Le Verrier, 13248 Marseille cedex 04, France

Abstract

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I present N-body simulations of isolated and interacting galaxies, made on GRAPE machines. In particular I discuss the formation and evolution of N-body bars and compare their properties to those of bars in early-type and late-type galactic discs. I argue that the halo can help the bar grow, contrary to previous beliefs, by taking positive angular momentum from it via its resonant stars. I then focus on the interaction and subsequent merging of a barred disc galaxy with a spheroidal satellite. The evolution depends strongly on the mass (density) of the satellite and may lead to its destruction or to the destruction of the bar.

Type
Galactic Dynamics
Information
Symposium - International Astronomical Union , Volume 208: Astrophysical Supercomputing using Particle Simulations , 2003 , pp. 177 - 188
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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