论文标题
建模原电磁磁盘中的热化学过程I：数值方法
Modelling thermochemical processes in protoplanetary disks I: numerical methods
论文作者
论文摘要
通过中央恒星的辐射和/或磁盘本身中的磁场驱动的风盘的分散阶段可能在行星系统的形成和演化中起重要作用。当前的理论模型缺乏预测能力，无法充分限制观察结果。我们提出了Prizmo，这是一种在原动性磁盘中不断发展的热化学代码，该磁盘能够与流体动力学和多频辐射传递代码相结合。我们描述了代码的主要特征，包括气体和表面化学，光化学，微物理学以及主要的冷却和加热过程。一套基准的结果，包括光子为主导的区域，包括X射线在内的辐射光谱照明的平板以及在不同温度下评估的良好的冷却功能在化学和热结构方面都表现出良好的一致性。该代码的开发是执行磁盘风的定量光谱以及最终计算线曲线的重要步骤，线曲线的计算迫切需要阐明观察到的磁盘风的性质。
The dispersal phase of planet-forming disks via winds driven by irradiation from the central star and/or magnetic fields in the disk itself is likely to play an important role in the formation and evolution of planetary systems. Current theoretical models lack predictive power to adequately constrain observations. We present PRIZMO, a code for evolving thermochemistry in protoplanetary disks capable of being coupled with hydrodynamical and multi-frequency radiative transfer codes. We describe the main features of the code, including gas and surface chemistry, photochemistry, microphysics, and the main cooling and heating processes. The results of a suite of benchmarks, which include photon-dominated regions, slabs illuminated by radiation spectra that include X-ray, and well-established cooling functions evaluated at different temperatures show good agreement both in terms of chemical and thermal structures. The development of this code is an important step to perform quantitative spectroscopy of disk winds, and ultimately the calculation of line profiles, which is urgently needed to shed light on the nature of observed disk winds.
