Galaxy recycling in clusters of galaxies

大星系被认为是由较小的矮小星系合并而成，但最近的发现揭示了一幅更猛烈的图景：一些矮星系因其同伴的引力而被撕裂，其内容散落在星系间空间。 我们将调查这些碎片有多少被回收到其他星系。我们将检查哈勃太空望远镜拍摄的矮星系图像，以测试它们是否被分解，形成我们最近发现的超致密矮星系。我们将模拟矮星系被破坏的速度，以确定暗物质是如何在这些星系中分布的。

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.