Lighting Up the Cosmic Web: Probing Galaxy Formation and the Surrounding Gas Reservoir Using Giant Lyman-alpha Nebulae

照亮宇宙网：利用巨型莱曼阿尔法星云探测星系的形成和周围的气体储层

• 批准号: 1813016
• 负责人: Moire Prescott
• 金额: $ 33万
• 依托单位: New Mexico State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-01 至 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1813016&HistoricalAwards=false
• 关键词: Lighting; Up; Cosmic; Web; Probing

Understanding how galaxies and black holes grow out of and impact the larger cosmic environment is the underlying goal of much of extragalactic astronomy. The aim of this proposed project is to use giant gaseous nebulae as a window into the galaxy formation process, building an efficient method for finding these systems and then studying both the forming galaxy properties and the physical conditions in the surrounding intergalactic gas. In doing so, the program will leverage both the power of the Big Data era as well as the latest astronomical instruments to provide a synthesized view of galaxy formation and black hole growth in action during the first few billion years of cosmic time. The project will provide research experiences for two undergraduates per year at a Hispanic serving institution. It will also develop training packages that will help inspire underrepresented students to realize their potential in the sciences. These packages will be used in the classroom as well as in public outreach. The EPSCoR program is helping to fund this project.The project will use existing and future big data sets of broad band imaging to identify giant Ly-alpha emitting clouds that are associated with galaxy forming regions. Using existing high-resolution images and catalogs, the project will then take a census of the galaxy population around these clouds. The team will apply for telescope time to obtain spatially resolved spectroscopy of the clouds to map out the kinematics and physical conditions within the diffuse gas clouds. The project will support graduate students and undergraduate students from a Hispanic serving institution. It will also develop "growth mindset training packages" for use in introductory astronomy courses (impacting over 500 students over three years) and in public observing events (reaching over 3000 people over three years). The project is being co-funded by the EPSCoR program.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.

了解星系和黑洞如何从更大的宇宙环境中生长出来并影响更大的宇宙环境是河外天文学的基本目标。该项目的目的是利用巨型气态星云作为星系形成过程的窗口，建立一种有效的方法来寻找这些系统，然后研究星系形成的性质和周围星系际气体的物理条件。在这样做的过程中，该计划将利用大数据时代的力量以及最新的天文仪器，在宇宙时间的前几十亿年内提供星系形成和黑洞生长的综合视图。该项目将提供研究经验，每年两名本科生在西班牙裔服务机构。它还将开发培训包，帮助激励代表性不足的学生实现他们在科学方面的潜力。这些教材将用于课堂和公共宣传。EPSCoR计划正在帮助资助这个项目。该项目将使用现有和未来的宽带成像大数据集来识别与星系形成区域相关的巨大Ly-alpha发射云。利用现有的高分辨率图像和目录，该项目将对这些云周围的星系人口进行普查。该团队将申请望远镜时间来获得云的空间分辨光谱，以绘制扩散气体云内的运动学和物理条件。该项目将支持来自西班牙裔服务机构的研究生和本科生。它还将开发“成长心态培训包”，用于天文学入门课程（三年内影响500多名学生）和公共观测活动（三年内影响3000多人）。该项目由EPSCoR计划共同资助。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

Lyα Escape from Low-mass, Compact, High-redshift Galaxies

Lyα 逃离低质量、致密、高红移星系

• DOI: 10.3847/1538-3881/ac83a9
• 发表时间: 2022
• 期刊: The Astronomical Journal
• 作者: Pucha, Ragadeepika;Reddy, Naveen A.;Dey, Arjun;Juneau, Stéphanie;Lee, Kyoung-Soo;Prescott, Moire K.;Shivaei, Irene;Hong, Sungryong
• 通讯作者: Hong, Sungryong

Brighter and More Massive Galaxies in the Vicinity of Lyα Nebulae

Lyα 星云附近更明亮、质量更大的星系

• DOI: 10.3847/1538-4357/aca3ac
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: Wells, Natalie K.;Prescott, Moire K. M.;Finlator, Kristian M.
• 通讯作者: Finlator, Kristian M.

Using Multiple Emission Line Ratios to Constrain the Slope of the Dust Attenuation Law

使用多个发射线比率来约束粉尘衰减定律的斜率

• DOI: 10.3847/1538-4357/ac5459
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: Prescott, Moire K. M.;Finlator, Kristian M.;Cleri, Nikko J.;Trump, Jonathan R.;Papovich, Casey
• 通讯作者: Papovich, Casey

Mapping the Morphology and Kinematics of a Lyα-selected Nebula at z = 3.15 with MUSE

使用 MUSE 绘制 z = 3.15 时 Lyα 选择的星云的形态和运动学

• DOI: 10.3847/1538-4357/ac3077
• 发表时间: 2021
• 期刊: The Astrophysical Journal
• 作者: Sanderson, Kelly N.;Prescott, Moire K. M.;Christensen, Lise;Fynbo, Johan;Møller, Palle
• 通讯作者: Møller, Palle