Newtonian models based on the Jeans equation of the velocity dispersion of the BHB stars in the Milky Way. Lower hatched region is for the purely visible baryonic mass, and the upper hatched region is for the truncated flat model, which assumes the existence of dark matter. The widths of the regions are determined by uncertainties in establishing the anisotropies in the motion of BHB stars. The solid line is for the fit based on the isotropic case (β_∗ = 0), and the dashed line is for the purely radial case (β_∗ = 1) (in this and in all other Jeans models below). The inserted plot presents the β_∗ parameter as a function of radius used in the Jeans models in this and all other figures related to the Jeans models below.