Dynamical instabilities in the aid of planet formation in circumstellar disks

新墨西哥州立大学进行的一项为期三年的计划将使用超级计算机模拟围绕年轻宿主恒星形成的行星。行星形成路线图中的许多细节仍然是未知的。行星是由围绕年轻恒星运行的气体和尘埃组成的圆盘。这项研究将使用功能强大的计算机来模拟行星的形成，并将结果与现代观测结果进行比较。这项研究将能够确定哪些模型更有可能解释行星的形成。该项目有一个教育部分，重点是服务不足的西班牙裔青少年，目的是激励他们接受高等教育。该项目将开发一个科学夏令营，在那里学生们将学习推理技能并学习天文学知识。该项目计划覆盖拉斯克鲁塞斯30%生活在贫困线以下的拉美裔青少年。为了巩固成果，将提供为期三个月的课后讲座计划，在结束时，一些学生将与当地天文学家结对进行暑期实习。拟议的工作可能会通过研究流体动力学和流动不稳定性之间的潜在协同作用，解决行星形成的稳健性这个长期存在的问题，特别是在太阳和太阳以下的金属活动的关键范围。这项工作将努力以以下形式产生可检验的预测：(1)亚毫米波长的行星形成流动不稳定性的观测特征；(2)热发射和散射光中动态不稳定性的观测现象；(3)散射光中如何出现涡旋，这对目前与SPHERE、GPI和SCEXAO的调查以及JWST的未来观测都有价值。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。

A three-year program conducted by New Mexico State University will simulate planets forming around young host stars using supercomputers. Many details in the roadmap of planet formation are still uncharted. Planets form out of disks of gas and dust that orbit young stars. This investigation will use powerful computers to produce simulations of planet formation and compare the results with modern observations. This research will be able to decide which models are more likely to account for planet formation. This project has an educational component focused on underserved Hispanic teenagers, with a goal is to inspire them to pursue higher education. The project will develop a science camp where students are taught reasoning skills and learn about astronomy. The project plans to reach 30% of all Hispanic teenagers living under the poverty line in Las Cruces. To consolidate gains, a three-month after-school program of lectures will be offered, by the end of which some students are paired with local astronomers for summer internships.The proposed work will potentially address the long-standing question of the robustness of planet formation, specifically in the crucial range of solar and sub-solar metallicity, by examining potential synergies between hydrodynamical and streaming instabilities. The work will strive to produce testable predictions in the form of (1) observational signatures of the planet-forming streaming instability in sub-mm wavelengths; (2) the observational appearance of dynamical instabilities in thermal emission and scattered light and (3) how vortices appear in scattered light, which is valuable to current surveys with SPHERE, GPI, and SCExAO, but also for future observations with JWST.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.