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Realistic modeling of star formation in cosmological simulations

宇宙学模拟中恒星形成的真实建模

基本信息

批准号：
1909063
负责人：
Oleg Gnedin
金额：
$ 37.55万
依托单位：
Regents of the University of Michigan - Ann Arbor
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2019
资助国家：
美国
起止时间：
2019-08-01 至 2024-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1909063&HistoricalAwards=false
关键词：
Realistic modeling star formation cosmological

项目摘要

One of the most important goals of modern astrophysics is the detailed understanding of the formation and growth of galaxies. This project will add a refinement to models of the birth of star clusters in galaxies and their influence on the growth of the galaxy. They will include these models in simulations of the the growth of galaxies in the universe over the age of the universe. The results of these models will be used to compare with future observations from telescopes on the ground and in space.This project will model the baryonic component of galaxies within LCDM cosmological simulations. The refinement to be made will treat stellar particles within the ART simulation as star clusters and add detailed properties of the evolution of the clusters and their influence on the local interstellar medium. With these refinements, zoom-in models of galaxies at redshifts of zero can have resolutions as small as 5 pc. From these simulations, they will produce simulated observational catalogs that can be compared with future observations from ALMA, JWST, and Gaia in order to constrain features of star formation and feedback within their models.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

现代天体物理学最重要的目标之一是详细了解星系的形成和增长。该项目将对星系中星团的诞生及其对星系增长的影响的模型进行改进。他们将把这些模型包括在模拟宇宙中星系随宇宙年龄增长的过程中。这些模型的结果将用于与未来地面和太空望远镜的观测结果进行比较。该项目将在LCDM宇宙模拟中对星系的重子成分进行建模。将要进行的改进将把ART模拟中的恒星粒子视为星团，并添加星团演化及其对本地星际介质影响的详细属性。有了这些改进，红移为零的星系的放大模型可以达到5pC的分辨率。从这些模拟中，他们将产生模拟的观测星表，可以与ALMA、JWST和GAIA未来的观测结果进行比较，以便在他们的模型中限制恒星形成和反馈的特征。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。