CAREER: Galactic Archeology: Understanding the Building Blocks of the Milky Way across Cosmic Time

职业：银河考古学：了解宇宙时间银河系的组成部分

• 批准号: 2045928
• 负责人: Andrew Wetzel
• 金额: $ 80.01万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2045928&HistoricalAwards=false
• 关键词: CAREER; Galactic; Archeology; Understanding; Building

Dr. Wetzel and his student research team are working to understand how galaxies like our Milky Way (MW) formed. Through this analysis they will they gain an in-depth understanding of the basic building blocks that formed the MW. Catalogs derived from the simulations will be made available to help optimize observational surveys of the MW. The team will develop and disseminate their interactive GalaxyLab program and use it to teach an undergraduate computational astrophysics class.The team will use cosmological simulations to track the population of stars formed in giant molecular clouds (GMCs) in the MW disk and compare it to stars stripped from companion dwarf galaxies. This project builds on the Latte suite of cosmological simulations, which uses the Feedback in Realistic Environments (FIRE) physics model. The new simulations will have a large dynamic range and will resolve GMCs and ultra-faint satellite dwarf galaxies. The team will investigate (1) the origin of the alpha-element bimodality in the abundance distribution of MW stars, (2) the lifetimes, dynamical evolution, and elemental abundances of GMCs and their stellar associations, and (3) "chemical tagging," where the 3D formation history of the MW is reconstructed from trends observed in the distribution of stellar elemental abundances. GalaxyLab will be distributed as a series of modules in an open-source Jupyter Python notebook.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.

Wetzel博士和他的学生研究团队正在努力了解像我们银河系(MW)这样的星系是如何形成的。通过这一分析，他们将深入了解构成MW的基本构件。从模拟得出的星表将被提供，以帮助优化对微波辐射的观测调查。该团队将开发和传播他们的互动GalaxyLab程序，并将其用于教授本科生计算天体物理学课程。该团队将使用宇宙学模拟来跟踪在兆瓦圆盘中形成的巨型分子云(GMC)中的恒星数量，并将其与从伴生矮星系中剥离的恒星进行比较。这个项目建立在Latte宇宙学模拟套件的基础上，该套件使用现实环境中的反馈(FIRE)物理模型。新的模拟将有一个大的动态范围，并将解析GMC和超微弱的卫星矮星系。该团队将调查(1)兆瓦恒星丰度分布中阿尔法元素双峰的起源，(2)GMC及其恒星组合的寿命、动力学演化和元素丰度，以及(3)“化学标记”，即根据观测到的恒星元素丰度分布的趋势重建兆瓦恒星的3D形成历史。GalaxyLab将作为一系列模块在开源的Jupyter Python笔记本中分发。该奖项反映了NSF的法定使命，并已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。

项目成果

Great balls of FIRE – I. The formation of star clusters across cosmic time in a Milky Way-mass galaxy

巨大的火球 — I. 银河系质量星系中跨越宇宙时间的星团形成

• DOI: 10.1093/mnras/stac3573
• 发表时间: 2022
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Grudić, Michael Y.;Hafen, Zachary;Rodriguez, Carl L.;Guszejnov, Dávid;Lamberts, Astrid;Wetzel, Andrew;Boylan-Kolchin, Michael;Faucher-Giguère, Claude-André
• 通讯作者: Faucher-Giguère, Claude-André

Public Data Release of the FIRE-2 Cosmological Zoom-in Simulations of Galaxy Formation

• DOI: 10.3847/1538-4365/acb99a
• 发表时间: 2022-02
• 期刊: The Astrophysical Journal Supplement Series
• 作者: A. Wetzel;C. Hayward;R. Sanderson;Xiangcheng Ma;D. Anglés-Alcázar;R. Feldmann;T. K. Chan;K. El-Badry;Coral Wheeler;S. Garrison-Kimmel;F. Nikakhtar;N. Panithanpaisal;Arpit Arora;Alex Gurvich;J. Samuel;Omid Sameie;V. Pandya;Zachary Hafen;C. Hummels;S. Loebman;M. Boylan-Kolchin;J. Bullock;C. Faucher-Giguère;D. Keres̆;E. Quataert;P. Hopkins

Born this way: thin disc, thick disc, and isotropic spheroid formation in FIRE-2 Milky Way–mass galaxy simulations

• DOI: 10.1093/mnras/stad1806
• 发表时间: 2022-10
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Sijie Yu;J. Bullock;Alex Gurvich;Zachary Hafen;J. Stern;M. Boylan-Kolchin;C. Faucher-Giguère

Reading the CARDs: The Imprint of Accretion History in the Chemical Abundances of the Milky Way's Stellar Halo

• DOI: 10.3847/1538-4357/ac78ea
• 发表时间: 2021-10
• 期刊: The Astrophysical Journal
• 作者: E. Cunningham;R. Sanderson;K. Johnston;N. Panithanpaisal;M. Ness;A. Wetzel;S. Loebman;I. Escala;D. Horta;C. Faucher-Giguère

On the Stability of Tidal Streams in Action Space

论作用空间潮汐流的稳定性

• DOI: 10.3847/1538-4357/ac93fb
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: Arora, Arpit;Sanderson, Robyn E.;Panithanpaisal, Nondh;Cunningham, Emily C.;Wetzel, Andrew;Garavito-Camargo, Nicolás
• 通讯作者: Garavito-Camargo, Nicolás