Turning up the Heat: Using Ram Pressure Stripping in Clusters to Understand Star Formation in Extreme Conditions

提高热量：利用星团中的冲压压力剥离来了解极端条件下的恒星形成

• 批准号: 2108470
• 负责人: Greg Bryan
• 金额: $ 44.21万
• 依托单位: Columbia University
• 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 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2108470&HistoricalAwards=false
• 关键词: Turning; up; Heat; Using; Ram

Large systems of galaxies, such as clusters, are usually surrounded by satellite galaxies. These satellites are often stripped of gas as they move around the cluster, resulting in less gas that can be converted to stars. However, there is evidence that low mass galaxies may not be stripped as quickly as suggested by cosmological models, and some observational studies have found that this stripping actually causes star formation. This project lays out a plan to understand how the interaction of a satellite galaxy with its host affects star formation by using a set of computer simulations. This project will support a student in Columbia University’s Bridge to the PhD program, involving the student in the research program and providing mentoring and training. The team will investigate the star formation properties of galaxies that have become satellites of more massive systems. These galaxies are interacting with the diffuse, hot halo gas of the host system, a process known as ram pressure stripping. The results of these numerical simulations will be used to address (i) the mechanisms by which low-mass galaxies respond to ram pressure stripping and how they quench, (ii) the conditions that are most likely to give rise to induced star formation versus rapid quenching, and how they compare to the increasingly large observational samples of so-called Jellyfish galaxies, which show signs of ram pressure stripping, and (iii) the use of high-resolution ISM-scale simulations will show, in detail, how the interstellar medium reacts to ram-pressure stripping. The answers to these questions will allow for a better understanding of how star formation operates in extreme conditions and may lead to better models of star formation in all conditions. The lack of underrepresented minorities (URM) in Ph.D. programs will be addressed in this project by supporting a URM student in Columbia’s successful Bridge to the Ph.D. program.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.

大的星系系统，如星系团，通常被卫星星系包围。这些卫星在围绕星团移动时经常被剥离气体，导致可以转化为恒星的气体减少。然而，有证据表明，低质量星系可能不会像宇宙学模型所建议的那样迅速剥离，一些观测研究发现，这种剥离实际上会导致星星的形成。该项目制定了一项计划，通过使用一组计算机模拟来了解卫星星系与其宿主星系的相互作用如何影响星星的形成。该项目将支持一名学生在哥伦比亚大学的桥梁博士课程，让学生参与研究计划，并提供指导和培训。该小组将调查已成为更大质量系统卫星的星系的星星形成特性。这些星系与宿主系统的弥漫的热晕气体相互作用，这一过程被称为冲压压力剥离。这些数值模拟的结果将用于解决（一）低质量星系对冲压压力剥离的反应机制以及它们如何淬火，（二）最有可能引起诱导星星形成与快速淬火的条件，以及它们如何与越来越大的所谓水母星系的观测样本进行比较，这些样本显示出冲压压力剥离的迹象，和（iii）使用高分辨率ISM规模的模拟将详细显示星际介质对冲压压力剥离的反应。这些问题的答案将允许更好地理解星星形成如何在极端条件下运作，并可能导致在所有条件下更好的星星形成模型。博士学位中缺乏代表性不足的少数民族（URM）。项目将通过支持URM学生在哥伦比亚的成功桥梁博士学位来解决。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值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

LYRA. III. The Smallest Reionization Survivors

天琴座。

• DOI: 10.3847/1538-4357/aca1b4
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: Gutcke, Thales A.;Pfrommer, Christoph;Bryan, Greg L.;Pakmor, Rüdiger;Springel, Volker;Naab, Thorsten
• 通讯作者: Naab, Thorsten

Calibrating Cosmological Simulations with Implicit Likelihood Inference Using Galaxy Growth Observables

• DOI: 10.3847/1538-4357/aca8fe
• 发表时间: 2022-11
• 期刊: The Astrophysical Journal
• 作者: Yongseok Jo;S. Genel;Benjamin Dan Wandelt;R. Somerville;F. Villaescusa-Navarro;G. Bryan;D. Anglés-Alcázar;D. Foreman-Mackey;D. Nelson;Ji-hoon Kim

The Anatomy of a Turbulent Radiative Mixing Layer: Insights from an Analytic Model with Turbulent Conduction and Viscosity

湍流辐射混合层的剖析：来自湍流传导和粘度分析模型的见解

• DOI: 10.3847/1538-4357/acc73f
• 发表时间: 2023
• 期刊: The Astrophysical Journal
• 作者: Chen, Zirui;Fielding, Drummond B.;Bryan, Greg L.
• 通讯作者: Bryan, Greg L.

First Results from SMAUG: Insights into Star Formation Conditions from Spatially Resolved ISM Properties in TNG50

• DOI: 10.3847/1538-4357/ac3d2d
• 发表时间: 2020-06
• 期刊: The Astrophysical Journal
• 作者: B. Motwani;S. Genel;G. Bryan;Chang-Goo Kim;V. Pandya;R. Somerville;Matthew C. Smith;E. Ostriker;D. Nelson;A. Pillepich;John C. Forbes;F. Belfiore;R. Pakmor;L. Hernquist

The MeerKAT Fornax Survey: I. Survey description and first evidence of ram pressure in the Fornax galaxy cluster

MeerKAT Fornax 巡天：I. 巡天描述和 Fornax 星系团中冲压压力的第一个证据

• DOI: 10.1051/0004-6361/202346071
• 发表时间: 2023
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Serra, P.;Maccagni, F. M.;Kleiner, D.;Molnár, D.;Ramatsoku, M.;Loni, A.;Loi, F.;de Blok, W. J.;Bryan, G. L.;Dettmar, R. J.
• 通讯作者: Dettmar, R. J.