LM10Potential¶

class gala.potential.LM10Potential(units=<UnitSystem (kpc, Myr, solMass, rad)>, disk={}, bulge={}, halo={})[source]¶

The Galactic potential used by Law and Majewski (2010) to represent the Milky Way as a three-component sum of disk, bulge, and halo.

The disk potential is an axisymmetric MiyamotoNagaiPotential, the bulge potential is a spherical HernquistPotential, and the halo potential is a triaxial LogarithmicPotential.

Default parameters are fixed to those found in LM10 by fitting N-body simulations to the Sagittarius stream.

Parameters:

units : UnitSystem (optional)

Set of non-reducable units that specify (at minimum) the length, mass, time, and angle units.

disk : dict (optional)

Parameters to be passed to the MiyamotoNagaiPotential.

bulge : dict (optional)

Parameters to be passed to the HernquistPotential.

halo : dict (optional)

Parameters to be passed to the LogarithmicPotential.

Note: in subclassing, order of arguments must match order of potential

components added at bottom of init.