Unveiling the haloes of Andromeda and the Milky Way

该项目旨在了解星系的形成和暗物质的天体物理特性。不断与较小的星系合并为大星系的发展提供了动力。这些相互蚕食的卫星的幽灵般的残余物编码了星系中质量的积累，并追踪了潜在的引力场。该项目将利用天文成像技术研究银河系及其姊妹星系仙女座星系外围的超微弱恒星流，揭示它们的聚集历史和暗物质晕的精确特性。这些量是检验现代宇宙学模型的基本实验基准。

This project aims to understand galaxy formation and the astrophysical properties of dark matter. Continual merging with smaller systems powers the development of large galaxies. The ghostly remnants of these cannibalised satellites encode the build-up of mass in a galaxy and trace the underlying gravitational field. This project will use astronomical imaging technology to study ultra-faint stellar streams in the outskirts of our Milky Way and its twin sister Andromeda, revealing their assembly histories and the precise properties of their dark matter haloes. These quantities are fundamental experimental benchmarks for testing modern cosmological models.