Milky Way Gas Dynamics |
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| Authors: | Peter Englmaier Ortwin Gerhard |
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| Institution: | (1) Departement für Physik und Astronomie, Astronomisches Institut, Universität Basel, Venusstr. 7, Binningen, 4102, Switzerland;(2) Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse, 85748, Garching bei München, Germany |
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| Abstract: | The Milky Way is made up of a central bar, a disk with embedded spiral arms, and a dark matter halo. Observational and theoretical constraints for the characteristic parameters of these components will be presented, with emphasis on the constraints from the dynamics of the Milky Way gas. In particular, the fraction of dark matter inside the solar radius, the location of the main resonances, and the evidence for multiple pattern speeds will be discussed.Invited talk at the AAS Division on Dynamical Astronomy meeting, Santa Barbara, April 2005 |
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| Keywords: | Hydro dynamics ISM: kinematics and dynamics Galaxy: center Galaxy: kinematics and dynamics Galaxy: structure Galaxies: spiral Galaxies: evolution |
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