CAREER: Chemical Enrichment: A Component of Massive Star Feedback Processes

提案ID：AST-0239321机构：洛厄尔天文台PI：Oey，SallyDr.Sally Oey将利用她在亚利桑那州弗拉格斯塔夫的洛厄尔天文台获得的职业奖项来模拟大质量恒星的反馈过程--机械、辐射和化学。在星系演化、星际介质、星系间介质(IGM)和宇宙演化的模型中，机械反馈和星系外流是一个关键的未知因素。辐射反馈控制着恒星形成和星系中电离光子逃逸分数的重要星云诊断，这是理解宇宙电离的核心。化学反馈控制着星系演化、IGM丰度和宇宙化学演化的基本化学特征。在她的观测和理论工作相结合的基础上，到目前为止，她成功地整合了机械和辐射反馈的参数化，这个奖项将使她能够完全包括化学反馈。这项研究计划还将提供广泛的科学基础，Oey博士将从这些基础上为洛厄尔天文台的公共推广计划提供材料。这种材料将很好地补充他们在太阳系和低质量恒星领域长期占据主导地位的科学优势。Oey博士将扩大和更新扩展计划，将银河系和河外科学包括在内，重点是洛厄尔用于公共科学活动的16英寸望远镜LOPARC，以及他们的电子时事通讯Learn。除了这些公共宣传努力外，她还将继续与K-12和高等教育的学生合作。

Proposal ID: AST-0239321Institution: Lowell ObservatoryPI: Oey, SallyDr. Sally Oey will use her CAREER award at Lowell Observatory in Flagstaff, Arizona, to model the feedback processes - mechanical, radiative, and chemical - from massive stars. Mechanical feedback and galactic outflows are a critical unknown in models of galaxy evolution, the interstellar medium, the intergalactic medium (IGM), and cosmic evolution. Radiative feedback controls vital nebular diagnostics of star-formation and the escape fraction of ionizing photons from galaxies, central to understanding the ionization of the universe. Chemical feedback controls the fundamental chemical signatures of galaxy evolution, enrichment of the IGM, and cosmic chemical evolution. Building on her combination of observational and theoretical work that has so far successfully integrated the parameterization of mechanical and radiative feedback, this award will allow her to fully include chemical feedback as well. This research program will also supply a broad science base from which Dr. Oey will draw material for Lowell Observatory's public outreach programs. This material will nicely complement their dominant science strengths, which have long been in the areas of solar system and low-mass stars. Dr. Oey will expand and update the outreach programs to include Galactic and extragalactic science, with an emphasis on LOPARC, Lowell's 16-in telescope for public science activities, and LEARN, their electronic newsletter. In addition to these public outreach efforts, she will continue working with students in K-12 and higher education.