Collaborative Research: Physics and Applications of Lyman-Alpha Emission of Star-forming Galaxies

合作研究：恒星形成星系莱曼-阿尔法发射的物理和应用

• 批准号: 2007499
• 负责人: Zheng Zheng
• 金额: $ 36.14万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2007499&HistoricalAwards=false
• 关键词: Collaborative; Research; Physics; Applications; Lyman

Observations of Lyman-alpha emitting galaxies (LAEs) provide clues to the formation and evolution of star forming galaxies, and the large-scale structure of the Universe. Zheng and Cen will simulate the Lyman-alpha emission for hundreds of simulated galaxies. This work will establish a theoretical framework for interpreting LAE observations. The team is actively engaged in public outreach. Cen participates in a program at the Rose-Hayden Planetarium of the American Museum of Natural History in New York City. Zheng will work with the Refugees Exploring the Foundations of Under Graduate Education in Science program at the University of Utah. The program serves under-represented middle and high school students through hands-on science workshops and activities designed to prepare the students for college.Zheng and Cen will employ a high-resolution cosmological hydrodynamic galaxy formation simulation combined with an efficient Monte Carlo Lyman-alpha radiative transfer code to investigate Lyman-alpha emission properties of LAEs and the clustering of LAEs. Observational astronomers will use this theoretical framework to interpret Lyman-alpha emission from circumgalactic and intergalactic media, investigate the role of LAEs during the epoch of reionization, and test the use of LAEs to map large scale structure. The simulated data will also be used to refine LAE detection algorithms, evaluate systematic uncertainties in on-going and future LAE surveys, and provide simulated data to test survey analysis pipelines.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.

莱曼α发射星系的观测为研究星星形成星系的形成和演化以及宇宙的大尺度结构提供了线索。Zheng和Cen将模拟数百个模拟星系的莱曼α发射。这项工作将建立一个解释LAE观测的理论框架。该小组积极参与公共外联活动。岑参在纽约市美国自然历史博物馆的玫瑰海登天文馆的一个项目。郑先生将与犹他州大学的难民探索科学研究生教育项目的基础合作。Zheng和Cen将采用高分辨率的宇宙学流体动力学星系形成模拟，结合高效的Monte Carlo Lyman-alpha辐射传输代码，研究LAEs的Lyman-alpha发射特性和LAEs的聚类。观测天文学家将使用这个理论框架来解释环星系和星系间介质的莱曼α发射，研究LAEs在再电离时期的作用，并测试LAEs在绘制大尺度结构中的作用。模拟数据还将用于改进LAE检测算法，评估正在进行和未来LAE调查的系统不确定性，并为测试调查分析管道提供模拟数据。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

The H α luminosity and stellar mass dependent clustering of star-forming galaxies at 0.7 < z < 1.5 with 3D- HST

使用 3D-HST 计算 0.7 < z < 1.5 处恒星形成星系的 Hα 光度和恒星质量相关的星团

• DOI: 10.1093/mnras/stac1889
• 发表时间: 2022
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Clontz, Callie;Wake, David;Zheng, Zheng
• 通讯作者: Zheng, Zheng

Inspiraling streams of enriched gas observed around a massive galaxy 11 billion years ago

• DOI: 10.1126/science.abj9192
• 发表时间: 2023-05
• 期刊: Science
• 影响因子: 56.9
• 作者: Shiwu Zhang;Zhengliang Cai;Da Xu;R. Shimakawa;F. Arrigoni Battaia;J. Prochaska;R. Cen;Zheng Zheng-Zheng;Yunjing Wu;Qiong Li;L. Dou;Jianfeng Wu;A. Zabludoff;Xiaohui Fan;Y. Ai;E. Golden-Marx;Miao Li;Youjun Lu;Xiangcheng Ma;Sen Wang;Ran Wang;F. Yuan

UV and Lyα Halos of Lyα Emitters across Environments at z = 2.84

z = 2.84 环境中 Lyα 发射器的 UV 和 Lyα 光环

• DOI: 10.3847/1538-4357/acbf30
• 发表时间: 2023
• 期刊: The Astrophysical Journal
• 作者: Kikuta Satoshi;Matsuda Yuichi;Inoue Shigeki;Steidel Charles C.;Cen Renyue;Zheng Zheng;Yajima Hidenobu;Momose Rieko;Imanishi Masatoshi;Komiyama Yutaka
• 通讯作者: Komiyama Yutaka

Constraining the Temperature-density Relation of the Inter-galactic Medium from Analytically Modeling Lyα Forest Absorbers

从 Lyα 森林吸收器分析建模中约束星系间介质的温度-密度关系

• DOI: 10.1088/1674-4527/acbe96
• 发表时间: 2023
• 期刊: Research in Astronomy and Astrophysics
• 影响因子: 1.8
• 作者: Yang, Li;Zheng, Zheng;Kim, T.-S.
• 通讯作者: Kim, T.-S.