Collaborative Research: CDS&E: Mining Physically Predictive Cosmological Simulations

合作研究：CDS

• 批准号: 1715070
• 负责人: Eliot Quataert
• 金额: $ 32.02万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1715070&HistoricalAwards=false
• 关键词: Collaborative; Research; CDS& Mining; Physically

By running detailed computer simulations, the investigators are working to understand how galaxies form. Because of the complexity of this problem, large computer simulations are needed to follow all the key physical processes. These investigators are developing a new approach for efficient modeling. The new methods have proved extremely successful in reproducing many of the observed properties of galaxies. The investigators will further improve their simulations to study a much wider range of galaxy types. They will push the frontiers of galaxy formation modeling on multiple fronts by including more physical processes and improving numerical accuracy. The new simulations will be used to study different sized galaxies from dwarf galaxies to galaxy halos ten times more massive than our Milky Way galaxy. The investigators will train students in computer modeling techniques that have a wide range of scientific and industrial applications. They will also produce film-quality animations produced from the new simulations, which will be the basis for education and outreach initiatives, including several planetariums. The new modules and optimizations for the simulation code will be publicly released, which will benefit not only astrophysics but also other disciplines, such as engineering.The investigators lead the "Feedback In Realistic Environments" (FIRE) project and create sets of cosmological simulations of galaxy formation that explicitly model stellar feedback on the scale of individual star-forming regions. In these simulations feedback will be directly anchored to stellar evolution models, significantly improving their predictive power by reducing the reliance on adjustable parameters. The FIRE simulations have proven successful in matching stellar masses, galactic winds, and the dark matter distributions of dwarf galaxies. To reach larger audiences, the investigators plan to create new musical "sonifications" of the FIRE simulations. The sonifications will be performed at an annual concert and highlight time-dependent phenomena.

通过运行详细的计算机模拟，研究人员正在努力了解星系是如何形成的。 由于这个问题的复杂性，需要大型计算机模拟来跟踪所有关键的物理过程。 这些研究人员正在开发一种有效建模的新方法。 事实证明，新方法在再现许多观测到的星系特性方面非常成功。 研究人员将进一步改进他们的模拟，以研究更广泛的星系类型。 他们将通过纳入更多物理过程并提高数值精度，在多个方面推动星系形成建模的前沿。 新的模拟将用于研究不同大小的星系，从矮星系到质量比银河系大十倍的星系晕。 研究人员将对学生进行具有广泛科学和工业应用的计算机建模技术的培训。 他们还将根据新的模拟制作电影质量的动画，这将成为教育和推广活动（包括几个天文馆）的基础。 模拟代码的新模块和优化将公开发布，这不仅有利于天体物理学，也有利于工程学等其他学科。研究人员领导了“现实环境中的反馈”（FIRE）项目，并创建了一系列星系形成的宇宙学模拟，这些模拟在单个恒星形成区域的规模上明确模拟了恒星反馈。 在这些模拟中，反馈将直接锚定到恒星演化模型，通过减少对可调参数的依赖，显着提高其预测能力。 事实证明，FIRE 模拟在匹配恒星质量、星系风和矮星系的暗物质分布方面是成功的。 为了吸引更多观众，研究人员计划为 FIRE 模拟创建新的音乐“声音化”。 这些声音将在一年一度的音乐会上进行，并突出显示与时间相关的现象。

项目成果

The formation and hierarchical assembly of globular cluster populations

• DOI: 10.1093/mnras/sty3007
• 发表时间: 2018-05
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: K. El-Badry;E. Quataert;D. Weisz;Nick Choksi;M. Boylan-Kolchin

Black holes on FIRE: stellar feedback limits early feeding of galactic nuclei

• DOI: 10.1093/mnrasl/slx161
• 发表时间: 2017-07
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: D. Angl'es-Alc'azar;C. Faucher-Giguère;E. Quataert;P. Hopkins;R. Feldmann;P. Torrey;A. Wetzel

How to model supernovae in simulations of star and galaxy formation

• DOI: 10.1093/mnras/sty674
• 发表时间: 2017-07
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: P. Hopkins;A. Wetzel;D. Keres̆;C. Faucher-Giguère;E. Quataert;M. Boylan-Kolchin;N. Murray;C. Hayward;K. El-Badry

Submillimetre flux as a probe of molecular ISM mass in high-z galaxies

亚毫米通量作为高 z 星系中分子 ISM 质量的探针

• DOI: 10.1093/mnrasl/sly071
• 发表时间: 2018
• 期刊: Monthly Notices of the Royal Astronomical Society: Letters
• 作者: Liang, Lichen;Feldmann, Robert;Faucher-Giguère, Claude-André;Kereš, Dušan;Hopkins, Philip F;Hayward, Christopher C;Quataert, Eliot;Scoville, Nick Z
• 通讯作者: Scoville, Nick Z

The contribution of globular clusters to cosmic reionization

球状星团对宇宙再电离的贡献

• DOI: 10.1093/mnras/stab1132
• 发表时间: 2021
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Ma, Xiangcheng;Quataert, Eliot;Wetzel, Andrew;Faucher-Giguère, Claude-André;Boylan-Kolchin, Michael
• 通讯作者: Boylan-Kolchin, Michael