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Broken and unbroken: the Milky Way and M31 stellar haloes
A. J. Deason, V. Belokurov, N. W. Evans +1
We use the Bullock & Johnston suite of simulations to study the density profiles of L*-type galaxy stellar haloes. Observations of the Milky Way and M31 stellar haloes show contras…
The stretching of Hercules
A. J. Deason, V. Belokurov, N. W. Evans +2
We present VLT/FORS2 spectroscopy of candidate blue horizontal branch (BHB) stars in the vicinity of the Hercules ultrafaint dwarf galaxy. We identify eight convincing Hercules BHB…
Broken degeneracies: the rotation curve and velocity anisotropy of the Milky Way halo
A. J. Deason, V. Belokurov, N. W. Evans +1
We use distant Blue Horizontal Branch stars with Galactocentric distances 16 < r/kpc < 48 as kinematic tracers of the Milky Way dark halo. We model the tracer density as an oblate,…
The cold veil of the Milky Way stellar halo
A. J. Deason, V. Belokurov, N. W. Evans +7
We build a sample of distant (D > 80 kpc) stellar halo stars with measured radial velocities. Faint () candidate blue horizontal branch (BHB) stars were selected using…