AI 中文总结
研究人员在开源行星内部求解器MAGRATHEA中添加碳质幔建模功能，以探索C/O比接近或超过0.9的行星系统中可能存在的碳基行星，完善行星内部结构的建模范围。
AI 中文摘要
行星的内部结构不仅影响其宜居性，还能提供行星形成与演化历史的信息。为表征已发现行星的多样性，最常用的做法是将地球的分异内部结构（铁核与硅酸盐幔）作为起点。但arXiv:2408.07761 [astro-ph.EP]的最新研究表明，当行星系统的C/O比接近并超过约0.9时，凝聚物质的成分可能会发生剧烈变化，形成碳质幔而非硅酸盐幔，这些假设可能不适用于所有行星系统。为更全面地理解可能存在的行星类型范围，我们在开源行星内部求解器MAGRATHEA中添加了碳质幔建模功能，新增的碳质幔包含三种相关的碳同素异形体：石墨、金刚石和BC8（体心立方，每个晶胞含8个原子）。
英文摘要
A planet's interior structure not only influences its habitability, but it also provides information about the planet's formation and history. In the quest to characterize the variety of planetary discoveries, the most common practice is to rely on our understanding of the Earth's differentiated interior structure, with an iron core and silicate mantle as a starting point. However, recent work by arXiv:2408.07761 [astro-ph.EP] shows that these assumptions may not be true for all planetary systems as the composition of the condensed material can change drastically towards a carbon mantle instead of a silicate one, once the C/O ratio of the system approaches and exceeds approximately 0.9. In an effort to more fully understand the range of possible planetary bodies, we added the ability to model carbon-based mantles to our open-source planetary interior solver, MAGRATHEA. The newly added carbon mantle includes three relevant allotropes of carbon: graphite, diamond, and BC8 (body centered cubic with eight atoms per cell).
CommentsPublished in the Open Journal of Astrophysics
