The mass of dwarf spheroidal galaxies and the missing satellite problem

Details The mass of dwarf spheroidal galaxies and the missing satellite problem The mass of dwarf spheroidal galaxies and the missing satellite problem

2005-05-11

arxiv.org/abs/astro-ph/0505226v1

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, to appear in the proceedings of the IAUC198 "Near-Field Cosmology with Dwarf Elliptical Galaxies", H. Jerje

Scientific paper

10.1017/S1743921305003807

We present the results from a suite of N-body simulations of the tidal stripping of two-component dwarf galaxies comprising some stars and dark matter. We show that recent kinematic data from the local group dwarf spheroidal (dSph) galaxies suggests that dSph galaxies must be sufficiently massive ($10^9 - 10^{10}$M$_\odot$) that tidal stripping is of little importance for the stars. We discuss the implications of these massive dSph galaxies for cosmology and galaxy formation.

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