The fate of dwarf galaxies in clusters and the origin of intracluster stars |
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| Authors: | Paramita Barai William Brito Hugo Martel |
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| Institution: | (1) Département de physique, de génie physique et d’optique, Université Laval, Québec City, Québec, G1K 7P4, Canada |
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| Abstract: | The main goal of this paper is to compare the relative importance of destruction by tides vs. destruction by mergers, in order to assess if tidal destruction of galaxies in clusters is a viable scenario for explaining
the origin of intracluster stars. We have designed a simple algorithm for simulating the evolution of isolated clusters. The
distribution of galaxies in the cluster is evolved using a direct gravitational N-body algorithm combined with a subgrid treatment of physical processes such as mergers, tidal disruption, and galaxy harassment.
Using this algorithm, we have performed a total of 148 simulations. Our main results are:
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destruction of dwarf galaxies by mergers dominates over destruction by tides, and |
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the destruction of galaxies by tides is sufficient to explain the observed intracluster light in clusters. |
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| Keywords: | Cosmology galaxies: clusters dwarfs interactions methods: numerical |
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