# galpy.potential.evaluateSurfaceDensities¶

galpy.potential.evaluateSurfaceDensities(Pot, R, z, phi=None, t=0.0, forcepoisson=False)[source]

NAME:

evaluateSurfaceDensities

PURPOSE:

convenience function to evaluate a possible sum of surface densities

INPUT:

Pot - potential or list of potentials (dissipative forces in such a list are ignored)

R - cylindrical Galactocentric distance (can be Quantity)

z - distance above the plane (can be Quantity)

phi - azimuth (can be Quantity)

t - time (can be Quantity)

forcepoisson= if True, calculate the surface density through the Poisson equation, even if an explicit expression for the surface density exists

OUTPUT:

Sigma(R,z)

HISTORY:

2018-08-20 - Written - Bovy (UofT)