Modeling the Abundance and Distribution of the First Stars and Galaxies

宇宙中第一批恒星的形成影响了整个宇宙时代中星系和星系团的成长。用计算机模拟第一批恒星的诞生和星系的成长是非常困难的，因为这些模型必须涵盖小到恒星的大小，大到星系团的大小。这个项目将使用一种混合了两种建模技术的方法来更好地覆盖尺寸范围。然后，它将提供关于早期宇宙的预测，这些预测可以用现代望远镜进行验证。它还将利用这些模型开发天文馆节目。这些表演将在公共天文馆和外联活动中使用。该项目将开发一种混合方法来模拟宇宙中第一颗Pop III恒星的诞生。从小尺度的半解析方法开始，使用人工智能开发恒星形成的快速模拟，以结合大规模的流体动力学宇宙学模拟。模拟将用于预测即将到来的观测，重点是红移21厘米的中性氢线和来自第一批恒星的不断增长的黑洞残留物。该项目还将重新启动“女生参与科学”，这是一个年度活动，对科学感兴趣的当地初中女生参加科学活动，并与成功的女科学家进行小组讨论。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。

The formation of the first stars in the universe influence the growth of galaxies and galaxy clusters throughout the age of the universe. It is very difficult to make computer models of the birth of the first stars and growth of galaxies because the models must cover sizes as small as stars and as large as galaxy clusters. This project will use an approach which blends two modeling techniques to better cover the range of sizes. It will then provide predictions about the early universe that can be tested with modern telescopes. It will also develop planetarium shows using these models. These shows will be used at public planetariums and in outreach activities.This project will develop a hybrid approach to modeling the birth of the first Pop III stars in the universe. Starting with a semi-analytic approach at small scales and using AI to develop a rapid emulation of star formation to incorporate in large scale hydrodynamic cosmological simulations. The simulations will be used to make predictions for upcoming observations with a focus on the redshifted 21-cm line of neutral hydrogen and growing black hole remnants from the first stars. The project will also restart "Girls in Science", an annual event where local junior high school girls interested in science participate in science activities and attend a panel discussion with successful women scientists.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.