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Precise Asteroseismic Ages for the Helmi Streams
Christopher J. Lindsay, Marc Hon, J. M. Joel Ong +6
The Helmi streams are remnants of a dwarf galaxy that was accreted by the Milky Way and whose stars now form a distinct kinematic and chemical substructure in the Galactic halo. Pr…
On the chaos induced by the Galactic bar on the orbits of nearby halo stars
Hanneke C. Woudenberg, Amina Helmi
Many of the Milky Way's accreted substructures have been discovered and studied in the space of energy , and angular momentum components and . In a static axisym…
Chemical characterisation of small substructures in the local stellar halo
Emma Dodd, Tadafumi Matsuno, Amina Helmi +5
The local stellar halo of the Milky Way is known to contain the debris from accreted dwarf galaxies and globular clusters, in the form of stellar streams and over-densities in the…
The effect of environment on the mass assembly history of the Milky Way and M31
Ewoud Wempe, Amina Helmi, Simon D. M. White +2
We study the mass growth histories of the halos of Milky Way and M31 analogues formed in constrained cosmological simulations of the Local Group. These simulations constitute a fai…