actionAngleStaeckel

class galpy.actionAngle.actionAngleStaeckel(*args, **kwargs)[source]

Action-angle formalism for axisymmetric potentials using Binney (2012)’s Staeckel approximation

__init__(*args, **kwargs)[source]
NAME:

__init__

PURPOSE:

initialize an actionAngleStaeckel object

INPUT:

pot= potential or list of potentials (3D)

delta= focus (can be Quantity)

useu0 - use u0 to calculate dV (NOT recommended)

c= if True, always use C for calculations

order= (10) number of points to use in the Gauss-Legendre numerical integration of the relevant action, frequency, and angle integrals

ro= distance from vantage point to GC (kpc; can be Quantity)

vo= circular velocity at ro (km/s; can be Quantity)

OUTPUT:

instance

HISTORY:

2012-11-27 - Written - Bovy (IAS)