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CAREER: The Role of Stellar Feedback in Star Formation

职业：恒星反馈在恒星形成中的作用

基本信息

批准号：
1748571
负责人：
Stella Offner
金额：
$ 42.91万
依托单位：
University of Texas at Austin
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 2023-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1748571&HistoricalAwards=false
关键词：
CAREER Role Stellar Feedback Star

项目摘要

The investigator's group will write detailed computer-models of how stars are born from gas in our galaxy. All stars are born in large clouds of gas in galaxies, which condense to form stars and planets. The investigator will write new computer models for the physics that determines the mass of new stars. She will also study how neighboring young stars influence each other and their birth environment by injecting energy into their surroundings. Evidence suggests our Sun formed together with thousands of siblings, which may have shaped our Sun?s properties. However, why stars like our Sun have the masses they do remains debated. Her team will model how stars interact with their birth environment and test different theories for the origin of star masses. The investigator will produce synthetic observations of the models and compare these to telescope observations of star-forming regions in our Milky Way galaxy. The educational goal of the project is to increase participation and diversity in STEM. The investigator will use the World Wide Telescope (WWT) educational software to communicate recent exciting astronomy discoveries to the public. She will use WWT to create interactive labs for several local underserved populations, will also organize research training and organize an annual star formation symposia.The proposal aims to explore two fundamental questions in star formation: How do stars obtain their masses? What sets the star formation rate in molecular clouds? The PI will address these questions by performing multi-physics numerical simulations of forming star clusters including outflow, wind and radiation feedback. The three key science objectives are to 1) constrain the importance of core masses in setting the stellar initial mass function, 2) evaluate the influence of feedback on turbulence and star formation efficiency, and 3) bridge simulations and observations using "apples-to-apples" comparisons. The investigator will produce synthetic observations of the models and compare directly to observations, harnessing thousands of hours of current and planned large- scale surveys probing dense gas, proto-stellar outflows with very fine resolution.

研究小组将编写详细的计算机模型，说明恒星如何从我们银河系的气体中诞生。所有的恒星都诞生于星系中巨大的气体云中，这些气体云凝聚形成恒星和行星。研究人员将为确定新恒星质量的物理学编写新的计算机模型。她还将研究相邻的年轻恒星如何通过向周围环境注入能量来影响彼此及其出生环境。有证据表明，我们的太阳是由数千个兄弟姐妹共同形成的，这些兄弟姐妹可能塑造了我们的太阳？的属性。然而，为什么像我们的太阳这样的恒星有这样的质量仍然存在争议。她的团队将模拟恒星如何与其出生环境相互作用，并测试星星质量起源的不同理论。研究人员将对这些模型进行综合观测，并将其与我们银河系恒星形成区域的望远镜观测结果进行比较。该项目的教育目标是提高STEM的参与度和多样性。研究人员将使用万维望远镜（WWT）教育软件向公众传达最近令人兴奋的天文学发现。她将利用WWT为当地几个服务不足的人群创建互动实验室，还将组织研究培训，并组织一年一度的星星形成研讨会。该提案旨在探讨星星形成中的两个基本问题：恒星如何获得质量？是什么决定了分子云中星星的形成速率？PI将通过执行形成星星集群的多物理场数值模拟来解决这些问题，包括外流，风和辐射反馈。三个关键的科学目标是：1）在设定恒星初始质量函数时限制核心质量的重要性，2）评估反馈对湍流和星星形成效率的影响，3）使用“苹果对苹果”的比较来桥接模拟和观测。研究人员将对模型进行综合观测，并直接与观测结果进行比较，利用数千小时的电流和计划中的大规模调查，以非常精细的分辨率探测致密气体和原恒星外流。

项目成果

期刊论文数量（35）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Turbulent action at a distance due to stellar feedback in magnetized clouds

DOI：
10.1038/s41550-018-0566-1
发表时间：
2018-09
期刊：
Nature Astronomy
影响因子：
14.1
作者：
S. Offner;Yue Liu
通讯作者：
S. Offner;Yue Liu

The Astrochemical Impact of Cosmic Rays in Protoclusters. I. Molecular Cloud Chemistry

宇宙射线对原星团的天体化学影响。

DOI：
10.3847/1538-4357/ab20c7
发表时间：
2019
期刊：
The Astrophysical Journal
影响因子：
0
作者：
Gaches, Brandt A.;Offner, Stella S.;Bisbas, Thomas G.
通讯作者：
Bisbas, Thomas G.

Physical Processes in Star Formation

DOI：
10.1007/s11214-020-00693-8
发表时间：
2020-05
期刊：
Space Science Reviews
影响因子：
10.3
作者：
P. Girichidis;S. Offner;A. Kritsuk;R. Klessen;P. Hennebelle;P. Hennebelle;J. Kruijssen;M. Krause;S. Glover;M. Padovani
通讯作者：
P. Girichidis;S. Offner;A. Kritsuk;R. Klessen;P. Hennebelle;P. Hennebelle;J. Kruijssen;M. Krause;S. Glover;M. Padovani

The Robustness of Synthetic Observations in Producing Observed Core Properties: Predictions for the TolTEC Clouds to Cores Legacy Survey

DOI：
10.3847/1538-4357/ac2666
发表时间：
2021-09
期刊：
The Astrophysical Journal
影响因子：
0
作者：
S. Betti;R. Gutermuth;S. Offner;G. Wilson;A. Sokol;R. Pokhrel
通讯作者：
S. Betti;R. Gutermuth;S. Offner;G. Wilson;A. Sokol;R. Pokhrel

The Origin of the Stellar Mass Distribution and Multiplicity

DOI：
10.1007/s11214-020-00699-2
发表时间：
2020-06
期刊：
Space Science Reviews
影响因子：
10.3
作者：
Yueh-Ning Lee;Stella S. R. Offner;P. Hennebelle;P. Andr'e;H. Zinnecker;J. Ballesteros-Paredes;S. Inutsuka;J. Kruijssen
通讯作者：
Yueh-Ning Lee;Stella S. R. Offner;P. Hennebelle;P. Andr'e;H. Zinnecker;J. Ballesteros-Paredes;S. Inutsuka;J. Kruijssen