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16 February 2025
 
  » arxiv » astro-ph/0112076

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Isolated and Interacting Galaxies : Simulations with GRAPE
E. Athanassoula ;
Date 4 Dec 2001
Subject astro-ph
AbstractI 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.
Source arXiv, astro-ph/0112076
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