Dynamics of the Milky Way

Tidal Streams and Extended Distribution Functions for the Galactic Disc

Nonfiction, Science & Nature, Science, Physics, Mathematical Physics, Astrophysics & Space Science, Technology
Cover of the book Dynamics of the Milky Way by Jason Sanders, Springer International Publishing
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Author: Jason Sanders ISBN: 9783319187723
Publisher: Springer International Publishing Publication: June 15, 2015
Imprint: Springer Language: English
Author: Jason Sanders
ISBN: 9783319187723
Publisher: Springer International Publishing
Publication: June 15, 2015
Imprint: Springer
Language: English

This work presents a study of methods useful for modeling and understanding dynamical systems in the Galaxy. A natural coordinate system for the study of dynamical systems is the angle-action coordinate system. New methods for the approximation of the action-angle variables in general potentials are presented and discussed. These new tools are applied to the construction of dynamical models for two of the Galaxy’s components: tidal streams and the Galactic disc. Tidal streams are remnants of tidally stripped satellites in the Milky Way that experience the effects of the large scale structure of the Galactic gravitational potential, while the Galactic disc provides insights into the nature of the Galaxy near the Sun. Appropriate action-based models are presented and discussed for these components, and extended to include further information such as the metallicity of stars.

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This work presents a study of methods useful for modeling and understanding dynamical systems in the Galaxy. A natural coordinate system for the study of dynamical systems is the angle-action coordinate system. New methods for the approximation of the action-angle variables in general potentials are presented and discussed. These new tools are applied to the construction of dynamical models for two of the Galaxy’s components: tidal streams and the Galactic disc. Tidal streams are remnants of tidally stripped satellites in the Milky Way that experience the effects of the large scale structure of the Galactic gravitational potential, while the Galactic disc provides insights into the nature of the Galaxy near the Sun. Appropriate action-based models are presented and discussed for these components, and extended to include further information such as the metallicity of stars.

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