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Substructure in the Galactic Halo

Published online by Cambridge University Press:  05 March 2013

Steven R. Majewski
Steven R. Majewski*
Affiliation:
Department of Astronomy, University of Virginia, Charlottesville, VA 22903-0818, USA
*
2E-mail: [email protected]
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Abstract

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Giant stars make particularly useful tracer stars for halo substructure because they are very bright and very common. I discuss several projects that use giant-star tracers to search the Galactic halo for tidal debris from known Galactic satellites, including that from the Sagittarius dwarf galaxy, and to search for tidal debris features from former, now destroyed satellites. Several cross-sections of the halo reveal it to be networked with extended, coherent substructures, indicating that it is likely to be predominantly made up of accreted satellites.

Keywords

Galaxy: kinematics and dynamicsGalaxy: structureGalaxy: halo
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 21 , Issue 2: The Fifth Workshop on Galactic Chemodynamics , 2004 , pp. 197 - 202
Copyright
Copyright © Astronomical Society of Australia 2004

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