How do galaxies in groups run out of gas?

星系团中的气体是如何耗尽的？

• 批准号: DP150101734
• 负责人: Prof Barbara Catinella
• 金额: $ 22.46万
• 依托单位: The University of Western Australia
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-01-01 至 2018-09-13
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP150101734
• 关键词: How; do; galaxies; groups; run

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.

已知星系的观测特性取决于其周围的局部环境。然而，天文学家仍在努力理解星系演化在多大程度上是由养育形成的，以及哪些是主要的物理过程。解决这一悬而未决的问题的关键是研究各种环境下星系中的冷气成分及其与星星形成的关系。该项目将联合收割机结合一套无与伦比的数据，其中包括目前对原子和分子氢气最敏感的测量，以及最先进的数值模拟，目的是揭示在星系群环境中转变星系的物理机制。