Kinematics and Dynamics of Galactic Stellar Populations (Hardcover) (ISBN-13: 9781527505629)

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.

Author: Rafael Cubarsi
ISBN-10: 1527505626
ISBN-13: 9781527505629
Publisher: Cambridge Scholars Publishing
Language: English
Published: 12/15/2017
Pages: 223
Format: Hardcover
Weight: 0.83lbs
Size: 8.20h x 5.90w x 0.70d