Sylvain Fouquet, François Hammer, Yang-Bin Yang, Jianling Wang, Mathieu Puech, Hector Flores
We investigated a scenario in which M31 could be the remnant of a gas-rich
major merger. Galaxy merger simulations, highly constrained by observations,
were run using GADGET 2 in order to reproduce M31. We succeeded in reproducing
the global shape of M31, the thin disk and the bulge, and in addition some of
the main M31 large-scale features, such as the thick disk, the 10kpc ring and
the Giant Stream. This lead to a new explanation of the Giant Stream which
could be caused by tidal tail stars that have been captured by the galaxy
potential.
View original:
http://arxiv.org/abs/1110.5727
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