galpy.potential.Potential.surfdens

Potential.surfdens(R, z, phi=0.0, t=0.0, forcepoisson=False)

NAME:

surfdens

PURPOSE:

evaluate the surface density \(\Sigma(R,z,\phi,t) = \int_{-z}^{+z} dz' \rho(R,z',\phi,t)\)

INPUT:

R - Cylindrical Galactocentric radius (can be Quantity)

z - vertical height (can be Quantity)

phi - azimuth (optional; can be Quantity)

t - time (optional; can be Quantity)

KEYWORDS:

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,phi,t)

HISTORY:

2018-08-19 - Written - Bovy (UofT)