galpy.df.diskdf.oortA

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

Calculate the Oort function A.

Parameters:

  • R (float or Quantity) – Radius at which to calculate A.

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

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

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

Returns:

Oort A at R.

Return type:

float or Quantity

Notes

  • 2011-04-19 - Written - Bovy (NYU)