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
\[\Phi(R,z) = -\frac{\mathrm{amp}}{\sqrt{\lambda} + \sqrt{\nu}}\](see, e.g., Batsleer & Dejonghe 1994)
- __init__(amp=1.0, ac=5.0, Delta=1.0, normalize=False, ro=None, vo=None)[source]¶
NAME:
__init__
PURPOSE:
initialize a Kuzmin-Kutuzov Staeckel potential
INPUT:
amp - amplitude to be applied to the potential (default: 1); can be a Quantity with units of mass density or Gxmass density
ac - axis ratio of the coordinate surfaces; (a/c) = sqrt(-alpha) / sqrt(-gamma) (default: 5.)
Delta - focal distance that defines the spheroidal coordinate system (default: 1.); Delta=sqrt(gamma-alpha) (can be Quantity)
normalize - 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=, vo= distance and velocity scales for translation into internal units (default from configuration file)
OUTPUT:
(none)
HISTORY:
2015-02-15 - Written - Trick (MPIA)