1.2k citations · 2.7k across the 21 of their papers we have counts for
3 papers · 1 filter
Age Determination of Galaxy Merger Remnant Stars using Asteroseismology
Camilla C. Borre, Víctor Aguirre Børsen-Koch, Amina Helmi +12
The Milky Way was shaped by the mergers with several galaxies in the past. We search for remnant stars that were born in these foreign galaxies and assess their ages in an effort t…
High-precision chemical abundances of Galactic building blocks. The distinct chemical abundance sequence of Sequoia
Tadafumi Matsuno, Helmer H. Koppelman, Amina Helmi +5
Context: Sequoia is a retrograde kinematic substructure in the nearby Galactic halo, whose properties are a matter of debate. For example, previous studies do not necessarily agree…
Substructures, Resonances and debris streams
Emma Dodd, Amina Helmi, Helmer H. Koppelman
The local stellar halo of the Milky Way contains the debris from several past accretion events. Here we study in detail the structure and properties of nearby debris associated wit…