galpy.df.diskdf.kurtosisvR

diskdf.kurtosisvR(R, romberg=False, nsigma=None, phi=0.0)[source]

Calculate excess kurtosis in vR at R by marginalizing over velocity

Parameters:

  • R (float or Quantity) – Radius at which to calculate <vR>

  • romberg (bool, optional) – If True, use a romberg integrator (default: False)

  • nsigma (float, optional) – Number of sigma to integrate the velocities over

  • phi (float or Quantity, optional) – Azimuth (default: 0.0)

Returns:

KurtosisvR

Return type:

float

Notes

  • 2011-12-07 - Written - Bovy (NYU)