KINEMATICS OF THE OUTER STELLAR HALO

We test whether the simple model for the kinematics of the Galactic st ellar halo (in particular the outer halo) proposed by Sommer-Larsen, F lynn & Christensen (SLFC) is physically realizable, by directly integr ating particles in a three-dimensional model of the Galactic potential . We are able to show that the SLFC solution can be realized in terms of a distribution of particles with stationary statistical properties in phase space. Hence the SLFC model, which shows a notable change in the anisotropy from markedly radial at the Sun to markedly tangential beyond about Galactocentric radius r=20 kpc, seems a tenable descripti on of outer halo kinematics.