LEAPS-MPS: Where galaxies keep their cool in the heat: A Pathfinder to detect cool cosmic gas filaments and their effects on galaxy properties in clusters.

LEAPS-MPS：星系在高温下保持凉爽的地方：探测冷宇宙气体细丝及其对星团中星系特性的影响的探路者。

• 批准号: 2316862
• 负责人: charlotte welker
• 金额: $ 22.32万
• 依托单位: CUNY New York City College of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2316862&HistoricalAwards=false
• 关键词: LEAPS; MPS; Where; galaxies; keep

On the largest scales, galaxies are found to be arranged along vast networks of filamentary structures, commonly referred to as the cosmic web, that evolved from minute density fluctuations in the very early universe. Recent work by a team including the principal investigator (PI) concluded that cool, low-turbulence gas can flow along the cosmic web and penetrate deep into galaxy clusters and shield galaxies from the hot intra-cluster medium, effectively prolonging their ability to form stars. This research program will allow (1) a more precise characterization of the filamentary "shielding" mechanism on the dynamics and star formation activity of cluster galaxies, with the added potential to (2) indirectly trace the cool gas streams themselves. This program will provide unique research and professional experiences for at least six undergraduate students from groups underrepresented in STEM, with each student acting as a mentor and role model for another student at an earlier career stage.The PI will conduct a follow-up pilot study combining a completed integral-field spectroscopic (IFS) survey of 3,068 low redshift galaxies (SAMI) with mock IFS data cubes for 150,000 galaxies generated using the Horizon-AGN cosmological simulation. The PI and her students will extend the pipeline used to create mock IFS image cubes for simulated galaxies occupying filaments and cluster environments to include newly developed quenching diagnostics. These will be used in conjunction with standard IFS measures of galactic dynamics (e.g., maps of rotational velocity, velocity dispersion, and rotation asymmetry) to find observational signatures best suited to trace galaxy-filament interactions, assess how galaxies are affected by their proximity to intra-cluster filaments, and determine how the merging status of filaments might influence the results. This LEAPS-MPS research program promises to make a significant contribution regarding the interplay between galaxies and the cosmic web.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.

在最大的尺度上，发现星系是沿着庞大的丝状结构网络排列的，通常称为宇宙网络，这些网络是从早期宇宙中的微小密度波动演变而来的。包括主要研究员（PI）在内的团队的最新工作得出结论，凉爽，低扰动气体可以沿宇宙网络流动，并深入到星系簇中，并从热群体内群体内介绍星系，从而有效地延长了它们形成恒星的能力。该研究计划将允许（1）对集群星系的动力学和恒星形成活性的丝状“屏蔽”机制的更精确表征，并增加了（2）间接跟踪凉爽的气流本身。该计划将为来自STEM中人数不足的小组的至少六名本科生提供独特的研究和专业经验，每个学生在早期职业阶段充当另一名学生的导师和榜样。PI将进行一项后续的试验研究，结合完整的整体场景（IF Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami If Sami）的研究（IFS）地平线宇宙学模拟。 PI和她的学生将扩展用于创建模拟图像立方体的管道，用于模拟星系占据细丝和集群环境，以包括新开发的淬火诊断。这些将与标准的IF量度（例如，旋转速度，速度分散和旋转不对称性的图表）结合使用，以找到最适合追踪星系丝相互作用的观察性特征，以评估星系对肠系语的影响，并确定范围的状态，并确定范围的状态，并确定群体群体的状态，并确定群体群体的状态。该跨越MPS研究计划有望就星系与宇宙网络之间的相互作用做出重大贡献。该奖项反映了NSF的法定任务，并使用基金会的知识分子优点和更广泛的影响评估标准，认为值得通过评估来获得支持。