Ultra-faint signatures of galaxy growth seen through the cosmic haze

透过宇宙薄雾看到的星系生长的超微弱特征

• 批准号: DP190102448
• 负责人: A/Prof Lee Spitler
• 金额: $ 23.17万
• 依托单位: Macquarie University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2019
• 资助国家: 澳大利亚
• 起止时间: 2019-01-21 至 2023-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP190102448
• 关键词: Ultra; faint; signatures; galaxy; growth

This project aims to uncover the cosmic cannibalism of galaxy mergers, by using innovative new instrumentation to detect some of the faintest structures ever seen by astronomers. The project will provide a comprehensive measurement of the mass growth experienced by large galaxies consuming their smaller siblings, which will provide a critical test of our understanding of dark matter. The project will also conduct ultra-high-sensitivity measurements of the foreground haze from nearby interstellar clouds, a crucial step towards mitigating its impact on billion-dollar projects such as the Euclid space telescope. The statistics of spatial structures in these clouds will help us to understand how new stars are born in our own Milky Way.

该项目旨在通过使用创新的新仪器来探测天文学家所见过的一些最微弱的结构，从而揭示星系合并的宇宙同类相食现象。该项目将对大型星系吞噬其较小兄弟姐妹所经历的质量增长进行全面测量，这将为我们对暗物质的理解提供关键测试。该项目还将对附近星际云的前景雾霾进行超高灵敏度测量，这是减轻其对欧几里得太空望远镜等数十亿美元项目影响的关键一步。这些云中空间结构的统计数据将帮助我们了解新恒星是如何在我们自己的银河系中诞生的。