一般轴对称势中的角度- action估计
Angle-action estimation in a general axisymmetric potential
摘要：
角作用变量在星系动力学中的有用性是众所周知的，但由于在现实的星系势中计算它们的困难，它们的使用受到限制。在这里，我们提出了一种方法来估计角作用变量在一个现实的银河系轴对称的潜力，通过局部拟合Stäckel潜在的区域的轨道探测。该方法的质量进行评估，通过与其他已知的方法估计一系列的光盘和晕型轨道的角度作用变量的比较。最后，我们将日内瓦-哥本哈根调查投影到角度作用空间。
英文摘要：
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.
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