The quenching of galaxies in massive clusters

随着宇宙年龄的增长，星系发现自己被吸引到一起成为细丝，集团和集群。进入这些密集环境的镓会经历一些过程，最终导致其外观和内部性质发生巨大变化。该项目将发现星系如何通过与环境的相互作用，从蓝色恒星形成螺旋盘（如我们自己的银河系）转变为被动的红色椭圆星系。这个博士项目将是一个详细的研究星系转型与环境，比较那些在大规模星系团的低密度“场”环境。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.