Collaborative Research: The Last Gasp - Shutting Down Massive Galaxies at z~0.6

合作研究：最后的喘息 - 关闭 z~0.6 的大质量星系

• 批准号: 1908137
• 负责人: Desika Narayanan
• 金额: $ 13.57万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1908137&HistoricalAwards=false
• 关键词: Collaborative; Research; Last; Gasp; Shutting

This project will study distant galaxies in the midst of shutting down their last burst of star formation and metamorphosing from spiral galaxies - like the Milky Way - into round and dead elliptical galaxies. Although this process is common, as most large galaxies are ellipticals while young galaxies are spirals, it is poorly understood. This project will use the detailed properties of newly transformed galaxies in stars and gas to test formation models. The broader impacts will support underrepresented minority students transition to graduate school through bridge programs at Princeton University and the University of Pittsburgh.This work assesses possible quenching mechanisms using a unique sample of intermediate-redshift massive post-starburst galaxies. These galaxies have recently quenched their major star-forming episode - yet they are sufficiently nearby that multi-wavelength observations can illuminate their detailed, spatially resolved stellar properties and molecular gas reservoirs. By combining the resolved kinematics, distribution of stellar ages, remaining gas content, and visual morphologies of this statistical sample of recently quenched massive galaxies and comparing with the timescales and stochasticity of quenching within the SIMBA cosmological simulations, this project will determine the dominant quenching mechanism(s) driving the transformation of blue star forming, rotating, disk galaxies into red-and-dead, kinematically hot, spheroids. In addition, the team will extend a proven program to broaden and strengthen support of post-baccalaureate students at Princeton and the University of Pittsburgh.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.

该项目将研究遥远的星系，以关闭其最后一阵恒星形成，并从螺旋星系（如银河系）变成圆形和死去的椭圆星系。尽管此过程很常见，但由于大多数大型星系是椭圆形的，而年轻的星系是螺旋形的，因此知之甚少。该项目将使用恒星和气体中新转化的星系的详细特性来测试地层模型。更广泛的影响将通过普林斯顿大学和匹兹堡大学的桥梁课程过渡到研究生院的更广泛的影响。这项工作使用独特的中级降低大规模大规模的爆炸后星堡星系来评估可能的淬火机制。这些星系最近消除了他们的主要恒星形成事件 - 但是它们已经足够附近，以至于多波长的观测可以照亮其详细的，空间分辨的恒星特性和分子气库。通过结合解决的运动学，恒星年龄的分布，剩余的气体含量以及该统计样本的统计样本的视觉形态，以及与Simba宇宙学模拟中震荡的时间标准和淬火的时间尺度和随机性进行比较，该项目将决定较大的淬火机制，以驱动蓝颗静脉，旋转，旋转，旋转，旋转，旋转，旋转，旋转，旋转，旋转，旋转，旋转，旋转恒河，旋转，旋转，旋转，旋转恒河，旋转，旋转狂热，旋转恒星，旋转狂热，运动学上的球体。此外，该团队将扩展一项验证的计划，以扩大和加强普林斯顿大学和匹兹堡大学的学后学生的支持。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子优点和更广泛的影响审查标准通过评估来进行评估的。

项目成果

The impact of quenching on galaxy profiles in the simba simulation

• DOI: 10.1093/mnras/staa1169
• 发表时间: 2019-11
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: S. Appleby;R. Dav'e;K. Kraljic;D. Anglés-Alcázar;D. Narayanan

Mergers, starbursts, and quenching in the simba simulation

simba 模拟中的合并、星爆和淬火

• DOI: 10.1093/mnras/stz2580
• 发表时间: 2019
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Rodríguez Montero, Francisco;Davé, Romeel;Wild, Vivienne;Anglés-Alcázar, Daniel;Narayanan, Desika
• 通讯作者: Narayanan, Desika

High Molecular-gas to Dust Mass Ratios Predicted in Most Quiescent Galaxies

大多数静止星系中预测的高分子气体与尘埃质量比

• DOI: 10.3847/2041-8213/ac399f
• 发表时间: 2021
• 期刊: The Astrophysical Journal Letters
• 作者: Whitaker, Katherine E.;Narayanan, Desika;Williams, Christina C.;Li, Qi;Spilker, Justin S.;Davé, Romeel;Akhshik, Mohammad;Akins, Hollis B.;Bezanson, Rachel;Katz, Neal
• 通讯作者: Katz, Neal

simba: Cosmological simulations with black hole growth and feedback

• DOI: 10.1093/mnras/stz937
• 发表时间: 2019-01
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: R. Dav'e;D. Anglés-Alcázar;D. Narayanan;Qi Li;M. Rafieferantsoa;S. Appleby

Now You See It, Now You Don’t: Star Formation Truncation Precedes the Loss of Molecular Gas by ∼100 Myr in Massive Poststarburst Galaxies at z ∼ 0.6

• DOI: 10.3847/1538-4357/ac3dfa
• 发表时间: 2021-11
• 期刊: The Astrophysical Journal
• 作者: R. Bezanson;J. Spilker;K. Suess;David J. Setton;R. Feldmann;J. Greene;M. Kriek;D. Narayanan;M. Verrico