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Article Contents

TITLE PAGE

13.ORBITS
13.1.Action and angle variables
13.2.Epicyclic orbits
13.3.Rotating frame
13.4.Trapping at the Lagrangian points
13.5.Equations for the guiding centers
13.6.Exact orbits and the problem of self-consistency
Problems

22.STELLAR DYNAMICAL MODELS
22.1.Four approaches
22.2.Spherical isotropic models
22.3.Anisotropic finfty models
Problems