How do galaxies in groups run out of gas?

众所周知，星系的观测属性取决于其周围的局部环境。然而，天文学家们仍在努力理解星系进化在多大程度上受到后天的影响，以及哪些是主要的物理过程。解决这个悬而未决的问题的关键是研究一系列环境中星系中的冷气体成分及其与恒星形成的关系。该项目将把一个无与伦比的数据集，其中包括目前可用的最灵敏的原子和分子氢气测量数据，与最先进的数值模拟相结合，目的是揭示在星系群环境中负责转化星系的物理机制。

The observed properties of galaxies are known to depend on their surrounding local environment. However, astronomers are still struggling to understand to what extent galaxy evolution is shaped by nurture, and which are the dominant physical processes involved. The key to resolving this outstanding issue is to study the cold gas component, and its relation to star formation, in galaxies across a range of environments. This project will combine an unrivalled data set, which includes the most sensitive measurements of atomic and molecular hydrogen gas currently available, with state-of-the-art numerical simulations with the aim of revealing the physical mechanisms responsible for transforming galaxies in the group environment.