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A Holistic Approach to Terrestrial Planet Formation

类地行星形成的整体方法

基本信息

批准号：
2867696
负责人：
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

项目摘要

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.

系外行星形成于年轻恒星周围富含气体的原行星盘中。核心吸积范式的现代版本提供了一个路线图，说明如何将最初的微观尘埃颗粒转化为鹅卵石，星子，最后是行星。形成行星的性质（例如，它们的质量、轨道和组成）然后由与行星形成的各个阶段相关的物理和化学过程形成。然而，这些过程之间的相互作用是非常复杂的，一方面，原始圆盘的化学组成与新兴行星的组成之间的联系的性质还没有得到很好的理解。该项目涉及开发和使用最先进的类地行星形成动态早期阶段的数值模型，结合理论行星形成，观测天文学和天体化学社区的最新想法和见解。目标将是模拟光盘材料的元素和分子组成（例如，水、有机物、铁等的量）都印刻在不断生长和移动的鹅卵石、星子，以及最终的小岩石世界上。你的工作将提供原行星盘（如阿尔马或JWST等设施观察）和成熟系外行星之间的重要联系，阐明如何在宇宙其他地方形成类似于我们自己的行星。