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What controls where life can form and evolve in the Universe?

是什么控制着宇宙中生命形成和进化的位置？

基本信息

批准号：
2617740
负责人：
金额：
--
依托单位：
Liverpool John Moores University
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2021
资助国家：
英国
起止时间：
2021 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2617740
关键词：
What controls where life form

项目摘要

The current paradigm of planet formation has been based on isolated systems; nearby stars were thought to have little impact on planet formation and evolution. However, last year it was discovered that external stellar environments have a significant impact on the formation and evolution of planetary systems (Winter et al., 2020, Nature, 586, 528). Winter et al.'s findings have fundamental implications on planetary evolution models and where we may expect to find life in the Universe. This PhD project aims to quantify the effect of environment on planet formation and evolution.The Winter et al. paper focused on a small number of star and planet properties (mainly mass and orbital period), so a huge parameter space is yet to be explored with this method. The thesis will begin by investigating how other key parameters, such as stellar mass, affect planet formation as a function of environment. The next step will be to analyse in-hand ALMA and JWST observations of proto-stellar and proto-planetary systems in extreme environments to quantify how the birth environment affects a star's potential to host habitable planets. Finally, the thesis will explore the effect of stellar populations on planetary evolution models. By adding stellar populations to computational simulations of star and planet formation, the goal will be to determine the implications of external environment on planetary architecture.

目前的行星形成范式是基于孤立系统的；附近的恒星被认为对行星的形成和演化几乎没有影响。然而，去年发现，外部恒星环境对行星系统的形成和演化有重大影响（Winter et al., 2020, Nature, 586,528）。温特等人的发现对行星演化模型和我们可能期望在宇宙中找到生命的地方具有根本性的意义。这个博士项目旨在量化环境对行星形成和演化的影响。Winter等人的论文只关注了一小部分恒星和行星的特性（主要是质量和轨道周期），因此这种方法还需要探索巨大的参数空间。论文将从研究其他关键参数，如恒星质量，如何作为环境的函数影响行星的形成开始。下一步将是分析ALMA和JWST在极端环境下对原恒星和原行星系统的观测结果，以量化诞生环境如何影响恒星承载宜居行星的潜力。最后，本文将探讨恒星种群对行星演化模型的影响。通过将恒星种群加入到恒星和行星形成的计算模拟中，目标将是确定外部环境对行星结构的影响。