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Isolated and Interacting Galaxies : Simulations with GRAPE | E. Athanassoula
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4 Dec 2001 | Subject: | astro-ph | Abstract: | 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. | Source: | arXiv, astro-ph/0112076 | Services: | Forum | Review | PDF | Favorites |
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