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Substructure in Dwarf Galaxies

Published online by Cambridge University Press:  05 March 2013

Matthew Coleman
Matthew Coleman*
Affiliation:
Research School of Astronomy & Astrophysics, Australian National University, Weston Creek ACT 2611, Australia. Email: [email protected]
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Abstract

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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.

Keywords

galaxies: dwarfgalaxies: stellar contentgalaxies: interactionsGalaxy: haloLocal Group
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 21 , Special Issue 4: Structure and Dynamics in the Local Universe , 2004 , pp. 379 - 381
Copyright
Copyright © Astronomical Society of Australia 2004

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