The life-stories of galaxies from stellar fossils

恒星化石中的星系生命故事

• 批准号: FT160100402
• 负责人: A/Prof Luca Casagrande
• 金额: $ 48.48万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: ARC Future Fellowships
• 财政年份: 2017
• 资助国家: 澳大利亚
• 起止时间: 2017-06-30 至 2023-07-05
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/FT160100402
• 关键词: life; stories; galaxies; stellar; fossils

This project aims to derive stellar ages and chemical compositions to draw the precise evolutionary history of the Galaxy, using ongoing observational programmes. Stars hold the key to unveil the events that occurred throughout the history of our Galaxy, from the beginning of time until today. Their atmospheres retain a fossil record of the composition of the interstellar medium at the time of their formation, and the twinkling of their light tells us about their ages. Combining data from space-borne satellites and large Australian ground-based surveys is expected to lead to understanding of galaxy formation as a whole.

该项目旨在利用正在进行的观测方案，得出恒星年龄和化学成分，以绘制银河系的精确演化历史。恒星掌握着揭开银河系历史上发生的事件的钥匙，从时间的开始直到今天。它们的大气层保留了它们形成时星际介质成分的化石记录，它们闪烁的光告诉我们它们的年龄。结合来自空间卫星和澳大利亚大型地面调查的数据，预计将导致对星系形成的整体理解。