The effects of dynamical substructure on Milky Way mass estimates from the high-velocity tail of the local stellar halo

@article{Grand2019TheEO,
  title={The effects of dynamical substructure on Milky Way mass estimates from the high-velocity tail of the local stellar halo},
  author={R. Grand and A. Deason and S. White and C. Simpson and F. G'omez and F. Marinacci and R. Pakmor},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2019},
  volume={487}
}
  • R. Grand, A. Deason, +4 authors R. Pakmor
  • Published 2019
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • We investigate the impact of dynamical streams and substructure on estimates of the local escape speed and total mass of Milky-Way-mass galaxies from modelling the high-velocity tail of local halo stars. We use a suite of high-resolution magnetohydrodynamical cosmological zoom-in simulations that resolve phase space substructure in local volumes around solar-like positions. We show that phase space structure varies significantly between positions in individual galaxies and across the suite… CONTINUE READING
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