Numerical Simulation of Milky Way Galaxy and Sagittarius Dwarf Galaxy Collision

Abstract

The Milky Way has its own system of dwarf satellite galaxies, which have much lower mass. Interaction between the Milky Way and its satellites can impact the structure. Sagittarius Dwarf Galaxy is one of the nearest and brightest Milky Way's satellite galaxies. But it has been torn apart because of potential of the Galaxy. In this paper, we investigate a few models of Milky Way collision with its satellite. Sagittarius Dwarf Galaxy will be constructed as spherical and disk dwarf galaxy. We also included the stars, gaseous, and dark matter as the building blocks of the dwarf galaxy in calculation of this tidal interaction. The calculation was performed using N-body and Smoothed Particle Hydrodynamic program, GADGET-2 code.