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Dynamics of the Milky Way: Tidal Streams and Extended Distribution Functions for the Galactic Disc: Springer Theses

Autor Jason Sanders
en Limba Engleză Hardback – 25 iun 2015
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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Specificații

ISBN-13: 9783319187716
ISBN-10: 3319187716
Pagini: 230
Ilustrații: XXII, 264 p. 85 illus., 35 illus. in color.
Dimensiuni: 155 x 235 x 22 mm
Greutate: 0.58 kg
Ediția:2015
Editura: Springer International Publishing
Colecția Springer
Seria Springer Theses

Locul publicării:Cham, Switzerland

Public țintă

Research

Cuprins

Introduction.- Angle-Action Estimation in a General Axisymmetric Potential.- Actions, Angles and Frequencies from Numerically Integrated Orbits.- Action Estimation Using a Triaxial Stäckel Approximation.- Stream-Orbit Misalignment.- Stream Modelling in Angle-Frequency Space.- Determining the Velocity Dispersion of the Thick Disc.- Extended Distribution Functions for the Galactic Disc.- Conclusions.

Textul de pe ultima copertă

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.

Caracteristici

Nominated as an outstanding Ph.D. thesis by the University of Oxford, UK Presents an introduction to dynamical modelling of the Milky Way Discusses new methods for the efficient approximation of angle-action variables Introduces new action-based models for tidal streams and chemo dynamical models for the Galactic disc Includes supplementary material: sn.pub/extras