The local high velocity tail and the Galactic escape speed

28 Feb 2019 Deason Alis J. Durham Fattahi Azadeh Durham Belokurov Vasily Cambridge Evans Wyn Cambridge Grand Robert J. MPA Marinacci Federico Harvard Pakmor Rudiger MPA

We model the fastest moving (v_tot > 300 km/s) local (D < 3 kpc) halo stars using cosmological simulations and 6-dimensional Gaia data. Our approach is to use our knowledge of the assembly history and phase-space distribution of halo stars to constrain the form of the high velocity tail of the stellar halo... (read more)

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