Collaborative Research: The Effect of Filaments on the Gas in Galaxies

合作研究：细丝对星系中气体的影响

• 批准号: 1716690
• 负责人: Gregory Rudnick
• 金额: $ 28万
• 依托单位: University of Kansas Center for Research Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1716690&HistoricalAwards=false
• 关键词: Collaborative; Research; Effect; Filaments; Gas

Astronomers seek to understand how galaxies form and evolve. A galaxy's growth may be affected by processes within the galaxy itself and/or by its environment. Such growth is measured by the rate of new star formation. Galaxies can be found among vast aggregates of matter which are called filaments; alternatively, they may be isolated from one another. Galaxies found in filaments typically grow more slowly than isolated galaxies. Finn and collaborators seek to understand why filaments quench star formation. This project will combine imaging of the gas that fuels star formation in galaxies with observations that reveal the resulting star formation. Investigators will compare galaxies in both types of environment to determine the method of star formation quenching. Their results will challenge theoretical models. The project will also continue a successful, ongoing outreach to a local high school. Peer instruction will be added to leverage impact without additional funds. Kansas, the state where one of the investigators is located, is on the front-lines of the nationwide debate on the role of science in the classroom. Therefore, this effort to broaden participation in science is especially timely and relevant.This project will combine a large imaging survey in H-alpha and observations of neutral Hydrogen (HI) and molecular gas (CO). The project has three specific aims. The first aim is to directly measure whether the amount of neutral and/or molecular gas available to eventually form stars is measurably lower in filament galaxies compared to those in the field, group, or cluster environment. The second aim focuses on the spatial distribution of star formation within each galaxy. This aim will determine whether ram pressure stripping, starvation, and/or mergers are significant mechanisms for quenching star formation. The third aim uses the results of the first two aims to confront theoretical models of star formation quenching in the context of cosmological structure growth. The Data Management Plan includes release of the main data products: H-alpha + continuum maps of 200 galaxies and HI and CO measurements. Ancillary and raw data will be released upon publication and archived.

天文学家试图了解星系如何形成和发展。 银河系的增长可能会受到银河本身和/或环境中的过程的影响。 这种增长是通过新恒星形成速率来衡量的。 可以在称为细丝的大量物质中找到星系；另外，它们可以彼此隔离。 在细丝中发现的星系通常比孤立星系更慢。 芬恩和合作者试图了解为什么细丝淬灭星星的形成。 该项目将结合气体的成像，使星系中的星形形成与揭示所得恒星形成的观测值结合。 研究人员将比较两种类型环境中的星系，以确定恒星形成淬火的方法。 他们的结果将挑战理论模型。 该项目还将继续与当地高中进行成功，持续的宣传。 同行指导将被添加以利用影响，而无需额外的资金。 堪萨斯州是一名调查人员所在的州，是关于科学在课堂上作用的全国性辩论的前线。 因此，扩大参与科学的努力尤其及时且相关。该项目将结合H-Alpha中的大型成像调查以及中性氢（HI）和分子气（CO）的观察结果。 该项目具有三个特定的目标。 第一个目的是直接测量与田间，组或簇环境中的中性和/或分子气体最终形成恒星的量是否比灯丝星系中的量是否要低。 第二个目的集中在每个星系中恒星形成的空间分布。 该目标将确定RAM压力剥离，饥饿和/或合并是否是淬灭恒星形成的重要机制。 第三个目标使用前两个目的的结果来面对宇宙结构生长的恒星形成的理论模型。 数据管理计划包括释放主要数据产品：200个星系和HI和CO测量的H-Alpha +连续图。 辅助数据和原始数据将在出版和存档后发布。

项目成果

The Local Cluster Survey. I. Evidence of Outside-in Quenching in Dense Environments

• DOI: 10.3847/1538-4357/aac32a
• 发表时间: 2018-07
• 期刊: The Astrophysical Journal
• 作者: R. Finn;V. Desai;G. Rudnick;M. Balogh;M. Haynes;P. Jablonka;R. Koopmann;J. Moustakas;C. Peng;B. Poggianti;K. Rines;D. Zaritsky

The satellite population around luminous red galaxies in the 25 deg2 DESI Legacy Imaging Surveys Early Data Release

25°2 DESI 传统成像巡天早期数据发布中发光红色星系周围的卫星群

• DOI: 10.1093/mnras/stad118
• 发表时间: 2023
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Townsend, Melinda;Rudnick, Gregory
• 通讯作者: Rudnick, Gregory

The Local Cluster Survey II: disc-dominated cluster galaxies with suppressed star formation

本地星团巡天 II：恒星形成受到抑制的盘主导星团星系

• DOI: 10.1093/mnras/stad640
• 发表时间: 2023
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Finn, Rose A.;Vulcani, Benedetta;Rudnick, Gregory;Balogh, Michael L.;Desai, Vandana;Jablonka, Pascale;Zaritsky, Dennis
• 通讯作者: Zaritsky, Dennis

Virgo filaments: I. Processing of gas in cosmological filaments around the Virgo cluster

处女座细丝：I. 处女座星团周围宇宙细丝中气体的处理

• DOI: 10.1051/0004-6361/202040141
• 发表时间: 2022
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Castignani, G.;Combes, F.;Jablonka, P.;Finn, R. A.;Rudnick, G.;Vulcani, B.;Desai, V.;Zaritsky, D.;Salomé, P.
• 通讯作者: Salomé, P.

Virgo Filaments. II. Catalog and First Results on the Effect of Filaments on Galaxy Properties

处女座细丝。

• DOI: 10.3847/1538-4365/ac45f7
• 发表时间: 2022
• 期刊: The Astrophysical Journal Supplement Series
• 作者: Castignani, Gianluca;Vulcani, Benedetta;Finn, Rose A.;Combes, Francoise;Jablonka, Pascale;Rudnick, Gregory;Zaritsky, Dennis;Whalen, Kelly;Conger, Kim;De Lucia, Gabriella
• 通讯作者: De Lucia, Gabriella