Using vast new data samples to understand the disk of the Milky Way

使用大量新数据样本来了解银河系圆盘

• 批准号: DP160103747
• 负责人: Prof Kenneth Freeman
• 金额: $ 32.19万
• 依托单位: The Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2016
• 资助国家: 澳大利亚
• 起止时间: 2016-03-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP160103747
• 关键词: Using; vast; new; data; samples

How did disk galaxies like our Milky Way form from the expanding universe? This project seeks to improve our models of this process. Numerical models informed by observation are the key to understanding galaxy formation. The models predict the properties of galaxies in detail, but must be tested and modified relative to the observed motions and chemical properties of stars in the Galactic disk. Adequate data is essential but not yet available. This is about to change. This project plans to use observations from two vast new surveys to measure the chemical properties and motions of a million disk stars, in order to inform the numerical models properly. It also plans to use new techniques to search for chemical fingerprints of intense star formation events in galactic disks in the early universe.

像银河系这样的盘状星系是如何从膨胀的宇宙中形成的？这个项目旨在改进我们对这一过程的模型。通过观测得到的数值模型是理解星系形成的关键。这些模型详细地预测了星系的特性，但必须根据观测到的星系盘中恒星的运动和化学特性进行测试和修改。充分的数据是必不可少的，但目前还没有。这种情况即将改变。该项目计划利用两项大型新调查的观测结果来测量100万颗盘状恒星的化学性质和运动，以便正确地为数值模型提供信息。它还计划使用新技术来寻找早期宇宙中星系盘中强烈恒星形成事件的化学指纹。