A Holistic Approach to Terrestrial Planet Formation

类地行星形成的整体方法

• 批准号: 2867696
• 金额: --
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2867696
• 关键词: Holistic; Approach; Terrestrial; Planet; Formation

Exo-planets form in gas-rich protoplanetary discs around young stars. The modern version of the core accretion paradigm provides a roadmap for how to transform initially microscopic dust grains into pebbles, planetesimals, and finally planets. The properties of the forming planets (e.g., their masses, orbits, and composition) are then shaped by the physical and chemical processes associated with the various stages of planet formation. The interplay between these processes however is highly complex, and the nature of the link between the chemical make-up of the primordial disc, on one hand, and the composition of the emerging planets, on the other, is not well understood. This project involves developing and using state-of-the-art numerical models of the dynamic early stages of terrestrial planet formation, combining the latest ideas and insights from the theoretical planet formation, observational astronomy, and astrochemistry communities. The goal will be to simulate how the elemental and molecular composition of disc materials (e.g., amounts of water, organics, iron, etc.) is imprinted on growing and moving pebbles, planetesimals, and ultimately small, rocky worlds. Your work will provide an important link between protoplanetary discs (as observed with facilities such as ALMA or JWST) and mature exoplanets, shedding light on how planets resembling our own may be formed elsewhere in the universe.

在年轻恒星周围的富含气体球星盘中形成外射线星体。核心积聚范式的现代版本为如何将最初的微观灰尘晶粒转化为卵石，行星和最后的行星提供了路线图。然后，形成行星（例如它们的质量，轨道和成分）的特性由与行星形成的各个阶段相关的物理和化学过程塑造。然而，这些过程之间的相互作用非常复杂，一方面，原始盘的化学构成与新兴行星的组成之间的联系的性质尚不清楚。该项目涉及开发和使用陆地行星形成的动态早期阶段的最新数值模型，结合了理论行星形成，观察性天文学和天文学群落的最新思想和见解。目的是模拟圆盘材料的元素和分子组成（例如，水，有机物，铁等）如何印在生长和移动的鹅卵石，行星和最终是小的岩石世界上。您的作品将提供原月光盘（如Alma或JWST等设施）和成熟的系外行星之间的重要联系，从而阐明了类似于我们自己的行星的行星。