The velocity dispersion and mass profile of the Milky Way

  • Walter Dehnen, Dean E. McLaughlin, Jalpesh Sachania
  • Published 2006


We re-analyse the velocity-dispersion profile σ(r) at radii r > 10 kpc in the Galactic stellar halo, recently derived by Battaglia et al. (2005), who concluded that, for a constant velocity anisotropy of the tracers, these data rule out a flat circular-speed curve for the Milky Way. However, we demonstrate that if one makes the natural assumption that the… (More)

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