Isotropic Plummer DF

class galpy.df.isotropicPlummerdf(pot=None, ro=None, vo=None)[source]

Class that implements isotropic spherical Plummer DF:

\[f(E) = {24\sqrt{2} \over 7\pi^3}\,{b^2\over (GM)^5}\,(-E)^{7/2}\]

for \(-GM/b \leq E \leq 0\) and zero otherwise. The parameter \(GM\) is the total mass and \(b\) the Plummer profile’s scale parameter.

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

NAME:

__init__

PURPOSE:

Initialize an isotropic Plummer distribution function

INPUT:

pot= (None) Plummer Potential instance

ro=, vo= galpy unit parameters

OUTPUT:

None

HISTORY:

2020-10-01 - Written - Bovy (UofT)