Unveiling the haloes of Andromeda and the Milky Way

揭开仙女座和银河系的光环

• 批准号: FT160100206
• 负责人: Dr Dougal Mackey
• 金额: $ 56.36万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: ARC Future Fellowships
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-06-01 至 2022-05-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/FT160100206
• 关键词: Unveiling; haloes; Andromeda; Milky; Way

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.

该项目旨在了解星系的形成和暗物质的天体物理性质。与较小系统的不断合并为大型星系的发展提供了动力。这些被吞噬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我们银河系及其孪生姐妹仙女座外围的超微弱恒星流，揭示它们的组装历史及其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。