Substructure in Dwarf Galaxies

Details Substructure in Dwarf Galaxies Substructure in Dwarf Galaxies

2004-08-10

arxiv.org/abs/astro-ph/0408169v1

Astronomy and Astrophysics

Astrophysics

3 Pages, to appear in PASA issue 4 of 2004 for the "Structure and Dynamics in the Local Universe" conference (Sydney, 24-26 No

Scientific paper

10.1071/AS04040

Recent years have seen a series of large-scale photometric surveys with the aim of detecting substructure in nearby dwarf galaxies. Some of these objects display a varying distribution of each stellar population, reflecting their star formation histories. Also, dwarf galaxies are dominated by dark matter, therefore luminous substructure may represent a perturbation in the underlying dark material. Substructure can also be the effect of tidal interaction, such as the disruption of the Sagittarius dSph by the Milky Way. Therefore, substructure in dwarf galaxies manifests the stellar, structural and kinematic evolution of these objects.

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