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

首席研究员（PI）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纽曼正在使用麦哲伦巴德望远镜上的稻盛-麦哲伦区域照相机和光谱仪（IMACS）进行莱曼α断层成像IMACS巡天（LATIS）。PI Bird将进行计算模拟和合成观测，以优化早期宇宙的三维调查。PI将通过卡内基天体物理暑期学生实习计划（CASSI）共同指导加州大学滨江的本科生。PI Bird还将设计和提供CASSI研讨会，向学生介绍宇宙学模拟和数据可视化。PI纽曼将在一年一度的加州大学滨江暑期教师物理学院期间开发并向75名高中教师提供光谱学模块。该团队将绘制z = 2.2-2.8的宇宙在1.8平方度的地图。他们将确定大样本原群和原星团的质量，研究不同的星系亚群如何追踪LATIS检测到的结构，并量化数千个星系的Mpc尺度环境。LATIS层析成像图，7000个星系光谱（包括4000个z 2.2），以及随附的软件和文档将公开提供。该奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。

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.