• DOI:10.1093/mnrasl/slz092
Corpus ID: 165163524

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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