The quenching of galaxies in massive clusters

随着宇宙年龄的增长，星系发现自己被拉成细丝、团和星团。进入这些致密环境的星系可以经历最终导致其外观和内部特性发生巨大变化的过程。这个项目将发现星系是如何通过与环境的相互作用，从形成恒星的蓝色螺旋盘（就像我们自己的银河系）转变为被动的红色椭圆星系的。本博士项目将详细研究星系在环境中的转变，将大质量星系团中的转变与低密度“场”环境进行比较。您将使用哈勃太空望远镜，甚大望远镜，斯巴鲁望远镜和革命性的时空遗产调查（LSST, https://www.lsst.org/）的光谱和成像。该项目的结果将通过与最先进的星系形成宇宙学模拟的输出进行比较来进行物理解释。

As the Universe ages, galaxies find themselves drawn together into filaments, groups and clusters. Galaxies entering these dense environments can experience processes which ultimately lead to a dramatic change in their appearance and internal properties. This project will discover how galaxies are transformed (`quenched') from blue star-forming spiral discs (like our own Milky Way) into passive red elliptical galaxies, through interactions with their environment. This PhD project will be a detailed study of galaxy transformation with environment, comparing those in massive galaxy clusters to the low density "field" environment. You will use spectroscopy and imaging from Hubble Space Telescope, Very Large Telescope, Subaru telescope and the revolutionary Legacy Survey of Space and Time (LSST, https://www.lsst.org/). The results of this project will be physically interpreted through comparison with the outputs from state-of-the-art cosmological simulations of galaxy formation.