Formation of Stellar and Substellar Objects across the Universe

宇宙中恒星和亚恒星天体的形成

基本信息

批准号：
RGPIN-2016-04642
负责人：
Basu, Shantanu
金额：
$ 5.39万
依托单位：
University of Western Ontario
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2018
资助国家：
加拿大
起止时间：
2018-01-01 至 2019-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=644782
关键词：
Formation Stellar Substellar Objects across

项目摘要

We are entering an era of unprecedented resolution and/or sensitivity in observations and numerical simulations of star and planet formation. Our group offers a synthesis of computational modeling, theoretical knowledge and insight, and interpretation of observational data in order to answer key questions about star, disk, and planet formation. Over the five year period of this grant, we will move forward in four key areas; (1) a synthesis of new theoretical circumstellar disk models of increasing realism with new sensitive high-resolution observations, in order to understand disk origins and masses; (2) modeling of the formation of the first collapsed objects in the universe, in anticipation of upcoming sensitive high-redshift observations; (3) characterization of magnetic field and density structure within interstellar molecular clouds through a comparison of observations with synthetic maps made from increasingly realistic simulations, in order to understand filamentary structure, velocity coherence at small scales, and low star formation efficiency in low density regions; (4) characterization of the initial mass function of stars and substellar objects through mathematical models and observations of resolved stellar populations in nearby galaxies. We have many international collaborations in place and expect to participate actively in the astronomical community to contribute new insights into structure formation in the universe. **

我们正在进入一个在恒星和行星形成的观测和数值模拟方面具有前所未有的分辨率和/或灵敏度的时代。我们的小组提供了计算模型、理论知识和洞察力以及观测数据解释的综合，以回答有关恒星、圆盘和行星形成的关键问题。在这笔赠款的五年期间，我们将在四个关键领域取得进展；（1）综合新的理论星周盘模型，通过新的敏感高分辨率观测来增加真实性，以了解盘的起源和质量； (2) 对宇宙中第一个塌缩物体的形成进行建模，以预测即将到来的敏感高红移观测； (3) 通过将观测结果与日益真实的模拟合成图进行比较，表征星际分子云内的磁场和密度结构，以了解丝状结构、小尺度下的速度相干性以及低密度区域的低恒星形成效率; （4）通过数学模型和对附近星系中已解析恒星群的观测来表征恒星和星下物体的初始质量函数。我们开展了许多国际合作，并期望积极参与天文学界，为宇宙结构形成提供新的见解。 **