Kinematics and Dynamics of Galactic Stellar Populations 1st Edition by Rafael Cubarsi 9781527514805 1527514803

Kinematics and Dynamics of Galactic Stellar Populations 1st Edition Rafael Cubarsi – Ebook Instant Download/Delivery ISBN(s): 9781527514805, 1527514803

Product details:

• ISBN 10: 1527514803
• ISBN 13: 9781527514805
• Author: Rafael Cubarsi

Stellar dynamics is an interdisciplinary field where mathematics, statistics, physics, and astronomy overlap. The approaches to studying a stellar system include dealing with the collisionless Boltzmann equation, the Chandrasekhar equations, and stellar hydrodynamic equations, which are comparable to the equations of motion of a compressible viscous fluid. Their equivalence gives rise to the closure problem, connected with the higher-order moments of the stellar velocity distribution, which is explained and solved for maximum entropy distributions and for any velocity distribution function, depending on a polynomial function in the velocity variables. On the other hand, the Milky Way kinematics in the solar neighbourhood needs to be described as a mixture distribution accounting for the stellar populations composing the Galactic components. As such, the book offers a statistical study, according to the moments and cumulants of a population mixture, and a dynamical approach, according to a superposition of Chandrasekhar stellar systems, connected with the potential function and the symmetries of the model.

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