Haloes light and dark: dynamical models of the stellar halo and constraints on the mass of the Galaxy

@article{Williams2015HaloesLA,
  title={Haloes light and dark: dynamical models of the stellar halo and constraints on the mass of the Galaxy},
  author={A. A. Williams and N. Wyn Evans},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2015},
  volume={454},
  pages={698-707}
}
  • A. Williams, N. Evans
  • Published 11 August 2015
  • Physics
  • Monthly Notices of the Royal Astronomical Society
We develop a flexible set of action-based distribution functions (DFs) for stellar haloes. The DFs have five free parameters, controlling the inner and outer density slope, break radius, flattening and anisotropy respectively. The DFs generate flattened stellar haloes with a rapidly varying logarithmic slope in density, as well as a spherically aligned velocity ellipsoid with a long axis that points towards the Galactic centre - all attributes possessed by the stellar halo of the Milky Way. We… Expand

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