Revealing the history of the Milky Way Galaxy through precision stellar spectroscopy

通过精密恒星光谱揭示银河系的历史

• 批准号: FT140100554
• 负责人: Dr David Yong
• 金额: $ 45.82万
• 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: 2015
• 资助国家: 澳大利亚
• 起止时间: 2015-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/FT140100554
• 关键词: Revealing; history; Milky; Way; Galaxy

How did the Milky Way Galaxy form? The answer to this fundamental question lies in the chemical compositions of stars. Enormous investments by the Australian and international community into state-of-the-art facilities and surveys will yield a 1 million star sample for chemical analysis. To fully harvest the information from those surveys requires stellar chemical composition measurements of the highest possible precision. This project aims to use recently pioneered analysis techniques that have led the field of chemical abundance measurements in stars to the unprecedented precision level of 2 per cent (a five-fold improvement) to chart the evolution of our Galaxy over cosmic time.

银河系是如何形成的？这个基本问题的答案在于恒星的化学成分。澳大利亚和国际社会在最先进的设施和调查方面的巨大投资将产生100万个用于化学分析的明星样本。为了从这些调查中充分获取信息，需要尽可能高精度的恒星化学成分测量。该项目旨在使用最近开创的分析技术，将恒星化学丰度测量领域的精度提高到前所未有的2%(提高了五倍)，以绘制我们银河系在宇宙时间内的演化图。