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2012MNRAS.426..128S - Mon. Not. R. Astron. Soc., 426, 128-139 (2012/October-2)

Angle-action estimation in a general axisymmetric potential.

SANDERS J.

Abstract (from CDS):

The usefulness of angle–action variables in galaxy dynamics is well known, but their use is limited due to the difficulty of their calculation in realistic galaxy potentials. Here we present a method for estimating angle–action variables in a realistic Milky Way axisymmetric potential by locally fitting a Stäckel potential over the region an orbit probes. The quality of the method is assessed by comparison with other known methods for estimating angle–action variables of a range of disc and halo-type orbits. We conclude by projecting the Geneva–Copenhagen survey into angle–action space.

Abstract Copyright: © 2012 The Author Monthly Notices of the Royal Astronomical Society © 2012 RAS

Journal keyword(s): methods: numerical - Galaxy: kinematics and dynamics - solar neighbourhood - Galaxy: structure - galaxies: kinematics and dynamics

Simbad objects: 6

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