Kuzmin-Kutuzov Staeckel potential¶

class galpy.potential.KuzminKutuzovStaeckelPotential(amp=1.0, ac=5.0, Delta=1.0, normalize=False, ro=None, vo=None)[source]¶

Class that implements the Kuzmin-Kutuzov Staeckel potential

\[\Phi(R,z) = -\frac{\mathrm{amp}}{\sqrt{\lambda} + \sqrt{\nu}}\]

__init__(amp=1.0, ac=5.0, Delta=1.0, normalize=False, ro=None, vo=None)[source]¶

Initialize a Kuzmin-Kutuzov Staeckel potential.

Parameters:

amp (float or Quantity, optional) – Amplitude to be applied to the potential; can be a Quantity with units of mass density or Gxmass density.
ac (float, optional) – Axis ratio of the coordinate surfaces; (a/c) = sqrt(-alpha) / sqrt(-gamma) (default: 5.).
Delta (float or Quantity, optional) – Focal distance that defines the spheroidal coordinate system (default: 1.); Delta=sqrt(gamma-alpha).
normalize (bool or float, optional) – If True, normalize such that vc(1.,0.)=1., or, if given as a number, such that the force is this fraction of the force necessary to make vc(1.,0.)=1.
ro (float, optional) – Distance scale for translation into internal units (default from configuration file).
vo (float, optional) – Velocity scale for translation into internal units (default from configuration file).

Notes