Collaborative Research: The Spatially Resolved Circumgalactic Medium of Galaxies

合作研究：空间分辨的环绕星系介质

• 批准号: 1908109
• 负责人: Brian O'Shea
• 金额: $ 24.23万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1908109&HistoricalAwards=false
• 关键词: Collaborative; Research; Spatially; Resolved; Circumgalactic

Galaxies are the factories of cosmic creation. This project will simulate the formation of galaxies using a supercomputer to understand how gas cycles in galaxies. The broader impacts of this work will be felt through the mentoring of early-career scientists in research and the wide dissemination of pedagogical videos. These videos will share the results of this research and the methods behind it. The circumgalactic medium (CGM) surrounding galaxies serves as their fuel tank, waste dump, and recycling center. Inspired by novel integral-field instruments, this project will compile a new public database of spatially-resolved CGM observations and build new simulations to address key problems in the formation of star-forming disks and galaxy quenching. This project has two key science goals: (1) to pin down the kinematics and metal content of CGM gas that may be accreting, escaping, or recycling as disks form and evolve, and (2) to characterize the abundance and kinematics of cold gas in the inner halos of passive galaxies as a constraint on quenching.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

星系是宇宙创造的工厂。这个项目将使用超级计算机模拟星系的形成，以了解星系中气体是如何循环的。这项工作的更广泛影响将通过对早期职业科学家的研究指导和教学视频的广泛传播而感受到。这些视频将分享这项研究的结果和背后的方法。环绕星系的环星系介质(CGM)是星系的燃料箱、垃圾场和回收中心。在新型积分场仪器的启发下，该项目将汇编一个新的空间分辨CGM观测公共数据库，并建立新的模拟，以解决恒星形成盘形成和星系猝灭中的关键问题。该项目有两个关键的科学目标：(1)确定CGM气体的运动学和金属含量，这些气体可能随着圆盘的形成和演化而积累、逃逸或循环，以及(2)表征被动星系内晕中冷气体的丰度和运动学，作为对猝灭的限制。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。