galpy.potential.planarPotential.vcirc

planarPotential.vcirc(R, phi=None, t=0.0)[source]

Calculate the circular velocity at R in potential Pot.

Parameters:

  • R (float or Quantity) – Galactocentric radius.

  • phi (float or Quantity, optional) – Azimuth to use for non-axisymmetric potentials.

  • t (float or Quantity, optional) – Time (default: 0.0)

Returns:

Circular rotation velocity.

Return type:

float or Quantity

Notes

  • 2011-10-09 - Written - Bovy (IAS)

  • 2016-06-15 - Added phi= keyword for non-axisymmetric potential - Bovy (UofT)