vice.milkyway.default_evolution

The default evolutionary function of the milkyway object.

Signature: vice.milkyway.default_evolution(radius, time)

Parameters

radiusfloat

Galactocentric radius in kpc.

timefloat

Simulation time in Gyr.

Returns

valuefloat

Always returns the value of 1.0. The interpretation of this is set by the attribute mode. With the default value of “ifr”, this represents a uniform surface of infall of 1.0 \(M_\odot yr^{-1} kpc^{-2}\).

Example Code

>>> import vice
>>> mw = vice.milkyway(name = "example")
>>> mw.evolution
<function vice.milkyway.milkyway.milkyway.default_evolution(radius, time)>
>>> vice.milkyway.default_evolution(10, 1)
1.0
>>> vice.milkyway.default_evolution(5, 4)
1.0