CAREER: The Physics of Stellar Feedback and Star Formation Regulation in Galaxies

该团队将研究为什么恒星在星系中形成得如此缓慢和低效。他们将模拟关键的“反馈”效应，比如年轻恒星如何用强光轰击周围环境。该团队将把这些模型添加到恒星形成的新模拟中。这些模拟将比以前的模拟更逼真。资深团队成员将指导初级成员。后者将包括波多黎各大学和加利福尼亚州拉美裔大学的本科生。该团队将在波多黎各的科学博物馆和芝加哥地区的高中教室展示他们的研究成果。该团队将研究恒星反馈是如何运作的，以及它是如何调节星系中恒星的形成的。他们的目标是：(1)揭示星际湍流和银河系风是如何产生的；(2)研究依赖时间的分子化学对星际介质、恒星形成和流出的影响；(3)量化自洽辐射流体动力学对辐射反馈和观测示踪的影响；(4)研究磁场和宇宙射线对星际介质和银河系风的影响；(5)将结果综合成恒星形成规则和外流的广义分析理论；(6)发展新的、更具预测性的亚网格模型，以在完全宇宙星系演化模型中捕捉这些过程；以及(7)发布模拟数据产品，以便与当前和未来的观测结果进行比较。

The team will study why stars form so slowly and inefficiently in galaxies. They will model key "feedback" effects, like how young stars blast their surroundings with intense light. The team will add the models to new simulations of how stars form. These simulations will have much more realism than prior ones. Senior team members will mentor junior members. The latter will include undergraduates from universities in Puerto Rico and Hispanic-serving universities in California. The team will showcase their research at science museums in Puerto Rico and in high school classrooms in the Chicago area. The team will investigate how stellar feedback operates and how it regulates star formation in galaxies. Their goals are to (1) reveal how interstellar turbulence and galactic winds are generated; (2) investigate the effects of time-dependent molecular chemistry on the interstellar medium, star formation, and outflows; (3) quantify the effects of self-consistent radiation-hydrodynamics on radiative feedback and observational tracers; (4) study the effects of magnetic fields and cosmic rays on the interstellar medium and galactic winds; (5) synthesize the results into a generalized analytic theory of star formation regulation and outflows; (6) develop new, more predictive sub-grid models to capture these processes in fully cosmological galaxy evolution models; and (7) release mock data products for comparison with current and future observations.