GEPOD: Global Evolution of Planet-fOrming Disks

GEPOD：行星形成盘的全球演化

• 批准号: EP/Y014383/1
• 负责人: Paola Pinilla
• 金额: $ 158.34万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 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=EP%2FY014383%2F1
• 关键词: GEPOD; Global; Evolution; Planet; fOrming

Observations of exoplanets have revealed an astonishing diversity of planetary system configurations, which raises a fundamental question: How do initial conditions and the dynamical evolution of the birth-sites of planets (protoplanetary disks) influence the properties of exoplanets? It is unclear what drives the evolution of the disks while planets are forming, and how these conditions are determined by the stellar properties. Observing and modeling disks at various stages of evolution across large stellar properties is therefore crucial to constrain current theories of planet formation. GEPOD aims to provide an observational and theoretical view of the global evolution of protoplanetary disks at the time when planets form. I will lead and mentor an outstanding international research group to answer the following major open questions: (1) What are the physical processes that dominate the evolution of protoplanetary disks, (2) how do these processes affect the chemical composition of close-in planets where planets like Earth form, (3) does planet formation happen early- and possibly during the star formation process, and finally (4) how the simultaneous evolution of the host stars affect the disk evolution? High-resolution imaging instrumentation, in particular ALMA and JWST to which I have privileged access, provide us with a unique opportunity to answer these questions and test models of planet formation. Over the last decade I have led the development of theoretical models to understand the first steps of planet formation and I have compared these models with observational data from state-of-the-art telescopes. My theoretical research and observational discoveries have changed the way we understand the genesis of planets. With the unique combination of exquisite data and the theoretical machinery that I have developed, GEPOD will transform our understanding of the origins of exoplanets and their properties.

对系外行星的观测揭示了行星系统结构的惊人多样性，这提出了一个基本问题：行星诞生地（原行星盘）的初始条件和动态演化如何影响系外行星的特性？目前尚不清楚行星形成时是什么驱动了圆盘的演化，以及这些条件是如何由恒星特性决定的。因此，对大型恒星特性的不同演化阶段的圆盘进行观测和建模对于限制当前的行星形成理论至关重要。 GEPOD 旨在提供行星形成时原行星盘全球演化的观测和理论观点。我将领导和指导一个杰出的国际研究小组回答以下主要的开放性问题：（1）主导原行星盘演化的物理过程是什么，（2）这些过程如何影响邻近行星的化学成分像地球这样的行星是在哪里形成的，（3）行星形成是否发生在早期，并且可能发生在恒星形成过程中，最后（4）主恒星的同时演化如何影响盘演化？高分辨率成像仪器，特别是我有幸使用的 ALMA 和 JWST，为我们提供了一个独特的机会来回答这些问题并测试行星形成模型。在过去的十年中，我领导了理论模型的开发，以了解行星形成的第一步，并将这些模型与最先进的望远镜的观测数据进行了比较。我的理论研究和观测发现改变了我们理解行星起源的方式。凭借我开发的精致数据和理论机制的独特结合，GEPOD 将改变我们对系外行星起源及其特性的理解。