Simulations of the Interactions of the Sagittarius Dwarf Elliptical Galaxy with the Milky Way

Details Simulations of the Interactions of the Sagittarius Dwarf Elliptical Galaxy with the Milky Way Simulations of the Interactions of the Sagittarius Dwarf Elliptical Galaxy with the Milky Way

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.3704m&link_type=abstract

American Astronomical Society Meeting 206, #37.04; Bulletin of the American Astronomical Society, Vol. 37, p.489

Astronomy and Astrophysics

Astronomy

Scientific paper

The Sagittarius Dwarf Elliptical Galaxy (SagDEG) is one of the satellite galaxies interacting with the Milky Way. Discovered to be located just below the galactic center; this galaxy is currently being tidally disrupted as it approaches the Milky Way. As the interactions occur between these two galaxies, stars from SagDEG are being transferred to the Milky Way. Currently up to four of the known Milky Way Globular Clusters are suspected of originally being members of SagDEG. To study the interactions of these systems, we performed a series of N-Body/SPH simulations. Included in the Milky Way is the distribution of a Dark Matter Halo, Spheroid, and Disk of both stars and gas. The SagDEG system is modeled similarly. We study the galaxies with both dark matter and without in SagDEG to investigate the effect of dark matter to the interacting galaxies. The aim of this project is to answer the question of whether dark matter in the SagDEG system prevents or aids in the disruption of the system (such as mass transfer), and how different the final distributions of stars are.

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