Postdoctoral Fellowship: AAPF: Improved Astrochemical Data for Diffuse Cloud Models: Theoretical Dissociative Recombination Rate Coefficients for OH+, H2O+, and H2Cl+

乔希·福尔被授予美国国家科学基金会天文学和天体物理学奖学金，以在哥伦比亚大学开展一项研究和教育计划。FORR将研究需要了解的微观化学反应，以跟踪星系中形成恒星的气体云的演变。此外，FORER将指导女子本科生机构巴纳德学院的暑期研究，参与哥伦比亚大学天文学公共推广计划的自由公开演讲，并教授对数学和物理有浓厚兴趣的高中生。FORER将开发理论和代码来描述与漫射云温度相关的散射能量下OH、H20和H_2Cl的解离复合(DR)。将产生这些离子的国家选择的共振动力学DR率系数(需要，但不可用)，以对分子氢的相对丰度、推断的原子氢的宇宙射线电离率和星际辐射场施加限制。这些限制允许天体化学模型绘制星际扩散云从几乎纯粹的原子到越来越多的分子的转变-这是恒星形成的关键早期步骤。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Josh Forer is awarded an NSF Astronomy and Astrophysics Fellowship to carry out a program of research and education at Columbia University. Forer will study microscopic chemical reactions that need to be understood to track the evolution of star-forming gas clouds in galaxies. Additionally, Forer will mentor summer research with the women's undergraduate institution Barnard College, participate in Columbia University's Astronomy Public Outreach program of free public talks, and teach high school students with a strong interest in math and physics.Forer will develop theory and code to describe the dissociative recombination (DR) of OH+, H20+, and H2Cl+ at scattering energies relevant to diffuse cloud temperatures. State-selected rovibronic kinetic DR rate coefficients (needed, but not available) of these ions will be produced to place constraints on the relative abundance of molecular hydrogen, the inferred cosmic-ray ionization rate of atomic hydrogen, and the interstellar radiation field. These constraints allow astrochemical models to map the transition of diffuse interstellar clouds from almost purely atomic to increasingly molecular — a crucial early step in star formation.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.