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.

像我们的银河系中的磁盘星系是如何从不断扩展的宇宙中形成的？该项目旨在改善我们的这一过程模型。通过观察告知的数值模型是理解星系形成的关键。这些模型可以详细预测星系的性质，但必须相对于观察到的银河磁盘中恒星的运动和化学性质进行测试和修改。足够的数据是必不可少的，但尚不可用。这将要改变。该项目计划使用两项大量新调查的观察结果来测量一百万个磁盘恒星的化学特性和运动，以便正确地告知数值模型。它还计划使用新技术来寻找早期宇宙中银河系磁盘中强烈恒星形成事件的化学指纹。