galpy.df.quasiisothermaldf.sigmaRz¶
- quasiisothermaldf.sigmaRz(R, z, nsigma=None, mc=False, nmc=10000, gl=True, ngl=10, **kwargs)[source]¶
NAME:
sigmaRz
PURPOSE:
calculate sigma_RZ^2 by marginalizing over velocity
INPUT:
R - radius at which to calculate this (can be Quantity)
z - height at which to calculate this (can be Quantity)
OPTIONAL INPUT:
nsigma - number of sigma to integrate the velocities over
scipy.integrate.tplquad kwargs epsabs and epsrel
mc= if True, calculate using Monte Carlo integration
nmc= if mc, use nmc samples
gl= if True, calculate using Gauss-Legendre integration
ngl= if gl, use ngl-th order Gauss-Legendre integration for each dimension
OUTPUT:
sigma_Rz^2
HISTORY:
2012-07-30 - Written - Bovy (IAS@MPIA)