Galaxy recycling in clusters of galaxies

星系团中的星系循环

• 批准号: LX0454431
• 负责人: Prof Michael Drinkwater
• 金额: $ 0.66万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Linkage - International
• 财政年份: 2004
• 资助国家: 澳大利亚
• 起止时间: 2004-01-01 至 2004-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LX0454431
• 关键词: Galaxy; recycling; clusters; galaxies

Large galaxies are thought to form by merging smaller dwarf galaxies, but recent discoveries reveal a more violent picture: some dwarf galaxies are torn apart by the gravity of their companions, their contents strewn across inter-galactic space. We will investigate how much this debris is recycled into other galaxies. We will examine Hubble Space Telescope images of dwarf galaxies to test if they are broken up to form the ultra-compact dwarf galaxies we recently discovered. We will model the rate at which dwarf galaxies are disrupted to determine how the dark matter is distributed in such galaxies.

大星系被认为是由较小的矮星系合并而成的，但最近的发现揭示了一幅更为激烈的画面：一些矮星系被同伴的引力撕裂，它们的物质散落在星系间的空间。