Titlebook: Galaxies and Chaos; George Contopoulos,Nikos Voglis Book 2003 Springer-Verlag Berlin Heidelberg 2003 Celestial mechanics.Galaxy.dynamical

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https://doi.org/10.1007/978-1-4613-9898-1al of the disk to the gravitational potential of the main spiral arms. The peculiarities of the potential in the narrow transitional annulus between the regions of spiral and multipole behavior can explain basic characteristic features of the quarter-turn spirals (their angular length and small pitch angles).

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Wolfgang Bauer,Gary D. Westfalling moments form a closed system of three highly-symmetric coupled first-order partial differential equations in three variables. They were first derived by Lynden-Bell in 1960, but have resisted solution by standard methods. Here we present the general solution by superposition of singular solutions.

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https://doi.org/10.1007/978-1-4757-4401-9tic deviations from strict homology occur in the structure and dynamics of bright elliptical galaxies. In addition, I will discuss possible mechanisms of dynamical evolution for these systems, in the light of some classical thermodynamical arguments and of recent N-body simulations for stellar systems under the influence of weak collisionality.