Heidi Jo Newberg
Published 2021-03-07Version 1
Dwarf galaxies that come too close to larger galaxies suffer tidal disruption; the differential gravitational force between one side of the galaxy and the other serves to rip the stars from the dwarf galaxy so that they instead orbit the larger galaxy. This process produces "tidal streams" of stars, which can be found in the stellar halo of the Milky Way, as well as in halos of other galaxies. This chapter provides a general introduction to tidal streams, including the mechanism through which the streams are created, the history of how they were discovered, and the observational techniques by which they can be detected. In addition, their use in unraveling galaxy formation history and the distribution of dark matter in galaxies is discussed, as is the interaction between these dwarf galaxy satellites and the disk of the larger galaxy.
Comments: 26 (small) pages, 8 figures, appears as the first chapter in: Tidal Streams in the Local Group and Beyond: Observations and Implications, Astrophysics and Space Science Library, Volume 420. ISBN 978-3-319-19335-9. Springer International Publishing Switzerland, 2016 (DOI: 10.1007/978-3-319-19336-6)
Journal: In: Newberg H., Carlin J. (eds) Tidal Streams in the Local Group and Beyond. Astrophysics and Space Science Library, vol 420. Springer, Cham (2016)
Fitting orbits to tidal streams with proper motions
Dynamical modeling of tidal streams
A Complex Multiphase DLA Associated with a Compact Group at z=2.431 Traces Accretion, Outflows, and Tidal Streams
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