Simultaneous Formation of the Andromeda Giant Southern Stream and the Substructures in the Andromeda Halo

Misa Yamaguchi, Masao Mori, Takanobu Kirihara +4

We investigate a minor merger event in M31 that simultaneously forms the Andromeda Giant Southern Stream (AGSS), Eastern Extent (EE), North-Eastern Shelf (NES), and Western Shel (W…