Collaborative Research: Exploring Galaxy Growth in Diverse z~2.5 Cosmic Environments with Lyman-alpha Tomography

首席研究员纽曼和伯德正在绘制星系在宇宙网中的位置，以了解环境如何影响星系的演化。PI Newman正在使用麦哲伦巴德望远镜上的Inamori-Magellan区域照相机和摄谱仪（IMACS）来进行莱曼-阿尔法断层成像IMACS调查（LATIS）。PI Bird将进行计算模拟和综合观测，以优化对早期宇宙的三维调查。两位pi将通过卡内基天体物理学暑期学生实习计划（CASSI）共同指导加州大学河滨分校的一名本科生。PI Bird还将设计并提供CASSI研讨会，向学生介绍宇宙学模拟和数据可视化。PI Newman将在一年一度的加州大学河滨分校暑期教师物理学院期间为75名高中教师开发并提供光谱模块。该团队将绘制1.8平方度范围内z = 2.2-2.8的宇宙地图。他们将确定大量原群和原星系团样本的质量，研究不同的星系亚群如何追踪latis探测到的结构，并量化数千个星系的mpc尺度环境。LATIS层析图，7000个星系光谱（包括4000个z 2.2），以及相关的软件和文档将会公开。该奖项反映了美国国家科学基金会的法定使命，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。

Principal Investigators (PIs) Newman and Bird are mapping galaxies’ locations in the cosmic web to understand how the environment affects the evolution of galaxies. PI Newman is using the Inamori-Magellan Areal Camera and Spectrograph (IMACS) on the Magellan Baade Telescope to conduct the Lyman-alpha Tomography IMACS Survey (LATIS). PI Bird will make computational simulations and synthetic observations to optimize this 3-D survey of the early universe. The PIs will co-mentor a UC Riverside undergraduate through the Carnegie Astrophysics Summer Student Internship program (CASSI). PI Bird will also design and deliver a CASSI workshop that introduces students to cosmological simulations and data visualization. PI Newman will develop and offer a spectroscopy module to 75 high school teachers during the annual UC Riverside Summer Teacher Physics Academy.The team will map the z = 2.2-2.8 universe over 1.8 square degrees. They will determine the masses of a large sample of protogroups and protoclusters, investigate how different galaxy subpopulations trace LATIS-detected structures, and quantify the Mpc-scale environments of thousands of galaxies. The LATIS tomographic maps, 7000 galaxy spectra (including 4000 at z 2.2), and accompanying software and documentation will be made publicly available.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.