Dwarf Spheroidal Satellite Galaxies and the Galactic Tidal Field
Abstract
The Milky Way is surrounded by nine or more dwarf-spheroidal (dSph) satellite galaxies that appear to consist primarily of dark matter. Here I summarise research that shows that initially spherical bound low-mass satellites without dark matter, that are on orbits within a massive Galactic dark corona, can evolve into remnants that are non-spherical, have a non-isotropic velocity dispersion tensor and are not in virial equilibrium, but are bright enough for sufficiently long times to be mistaken for dark-matter dominated dSph galaxies.
Keywords
Cite
@article{arxiv.astro-ph/9612028,
title = {Dwarf Spheroidal Satellite Galaxies and the Galactic Tidal Field},
author = {Pavel Kroupa},
journal= {arXiv preprint arXiv:astro-ph/9612028},
year = {2007}
}
Comments
4 pages of plain TeX, Invited talk held at the 18th Meeting of the Graduierten-Kolleg: The Magellanic System and other dwarf galaxies -- Investigations of small galaxies, November 13/14/15 1996, Bad Honnef, organised by U.Klein (Bonn)