Anisotropic Hernquist DF of the Osipkov-Merritt type¶

class galpy.df.osipkovmerrittHernquistdf(pot=None, ra=1.4, ro=None, vo=None)[source]¶

Class that implements the anisotropic spherical Hernquist DF with radially varying anisotropy of the Osipkov-Merritt type

\[\beta(r) = \frac{1}{1+r_a^2/r^2}\]

with \(r_a\) the anistropy radius.

__init__(pot=None, ra=1.4, ro=None, vo=None)[source]¶

Initialize a Hernquist DF with Osipkov-Merritt anisotropy

Parameters:

pot (potential.HernquistPotential) – Hernquist potential which determines the DF
ra (float or Quantity, optional) – Anisotropy radius
ro (float or Quantity, optional) – Distance scale for translation into internal units (default from configuration file).
vo (float or Quantity, optional) – Velocity scale for translation into internal units (default from configuration file).

Notes