galpy.df.diskdf.asymmetricdrift¶
- diskdf.asymmetricdrift(R)[source]¶
NAME:
asymmetricdrift
PURPOSE:
estimate the asymmetric drift (vc-mean-vphi) from an approximation to the Jeans equation
INPUT:
R - radius at which to calculate the asymmetric drift (can be Quantity)
OUTPUT:
asymmetric drift at R
HISTORY:
2011-04-02 - Written - Bovy (NYU)