Internal kinematics and dynamical models of dwarf spheroidal galaxies around the Milky Way

2013/05/25 by G. Battaglia, Giuseppina Battaglia, A. Helmi +3 · 107 citations
Physics and Astronomy · #Astronomy #Astrophysics #Cosmology and Gravitation Theories #Dark matter #Dwarf galaxy #Dwarf galaxy problem #Galaxies: Formation, Evolution, Phenomena #Galaxy #Interacting galaxy #Local Group #Milky Way #Physics #Stellar, planetary, and galactic studies #astro-ph.CO

paper · pdf · open access · doi:10.1016/j.newar.2013.05.003

published in New Astronomy Reviews 57(3-4), 52-79 (Elsevier BV) · 89 pages, 12 figures. Invited review article to be published in the special issue "Galactic Archaeology" of New Astronomy Reviews

arxiv created 2013/05/25 · openalex publication_date 2013/06/12 · arxiv updated 2015/06/16 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05

Abstract

We review our current understanding of the internal dynamical properties of the dwarf spheroidal galaxies surrounding the Milky Way. These are the most dark matter dominated galaxies, and as such may be considered ideal laboratories to test the current concordance cosmological model, and in particular provide constraints on the nature of the dominant form of dark matter. We discuss the latest observations of the kinematics of stars in these systems, and how these may be used to derive their mass distribution. We tour through the various dynamical techniques used, with emphasis on the complementarity and limitations, and discuss what the results imply also in the context of cosmological models. Finally we provide an outlook on exciting developments in this field.

Citations

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Cited by

• The Cusp/Core problem: supernovae feedback versus the baryonic clumps and dynamical friction model
• Galactic tides and the shape and orientation of dwarf galaxy satellites
• A critical reassessment of particle Dark Matter limits from dwarf satellites
• Sommerfeld-enhanced J-factors for dwarf spheroidal galaxies