Modeling the physics of gas removal and star formation quenching in Local Group satellite galaxies with next-generation simulations

通过下一代模拟对本星系群卫星星系中气体去除和恒星形成淬灭的物理过程进行建模

• 批准号: 2102729
• 负责人: Jenna Samuel
• 金额: $ 30万
• 依托单位: Samuel, Jenna
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2102729&HistoricalAwards=false
• 关键词: Modeling; physics; gas; removal; star

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2). Jenna Samuel is awarded an NSF Astronomy and Astrophysics Postdoctoral Fellowship to conduct a program of research and education at the University of Texas. Samuel will perform detailed computer simulations of the Milky Way (MW) and Andromeda galaxies. Results from this study will allow astronomers to understand how gas is removed and star formation quenched in galaxies. For the education component of this project, Samuel will develop a seminar series and conduct research mentorship activities to increase the retention of students of color in the sciences.This project will conduct and benchmark exceedingly high-resolution cosmological simulations of MW-like halo environments. It will produce the first numerically converged models of stellar feedback and ram pressure stripping in satellite dwarf galaxies, and it will provide a comprehensive theoretical basis for determining (1) what caused the MW satellite galaxies to quench so completely, (2) whether the MW halo environment is typical of nearby analogs, and (3) whether MW satellites are unique in their formation history.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.

该奖项的全部或部分资金根据《2021 年美国救援计划法案》（公法 117-2）提供。 珍娜·塞缪尔 (Jenna Samuel) 获得美国国家科学基金会天文学和天体物理学博士后奖学金，在德克萨斯大学开展研究和教育项目。 塞缪尔将对银河系（MW）和仙女座星系进行详细的计算机模拟。 这项研究的结果将使天文学家了解星系中气体如何被去除以及恒星形成如何被抑制。 对于该项目的教育部分，塞缪尔将开发一系列研讨会并开展研究指导活动，以提高有色人种学生对科学的保留率。该项目将对类似中波光晕环境的超高分辨率宇宙学模拟进行并进行基准测试。它将产生第一个卫星矮星系中恒星反馈和冲压压力剥离的数值收敛模型，并将为确定（1）是什么导致MW卫星星系如此完全熄灭，（2）MW是否完全熄灭提供全面的理论基础。光环环境是否是附近类似物的典型，以及（3）MW卫星在其形成历史中是否独特。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进行评估，认为值得支持以及更广泛的影响审查标准。

项目成果

Extinguishing the FIRE: environmental quenching of satellite galaxies around Milky Way-mass hosts in simulations

灭火：模拟中银河系质量宿主周围卫星星系的环境淬灭

• DOI: 10.1093/mnras/stac1706
• 发表时间: 2022-06
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Samuel, Jenna;Wetzel, Andrew;Santistevan, Isaiah;Tollerud, Erik;Moreno, Jorge;Boylan;Bailin, Jeremy;Pardasani, Bhavya
• 通讯作者: Pardasani, Bhavya