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 处的大质量星系

• 批准号: 1907697
• 负责人: Rachel Bezanson
• 金额: $ 30.85万
• 依托单位: University of Pittsburgh
• 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 2024-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1907697&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，这些星系正在停止最后一次恒星形成，并从螺旋星系（如银河系）转变为圆形和死椭圆星系。尽管这个过程很常见，因为大多数大型星系是椭圆形的，而年轻星系是螺旋形的，但人们对它知之甚少。该项目将利用恒星和气体中新转变的星系的详细特性来测试形成模型。更广泛的影响将支持代表性不足的少数族裔学生通过普林斯顿大学和匹兹堡大学的桥梁项目过渡到研究生院。这项工作使用中间红移大质量星爆发后星系的独特样本来评估可能的猝灭机制。这些星系最近已经结束了它们主要的恒星形成过程，但它们距离足够近，多波长观测可以阐明它们详细的、空间分辨的恒星特性和分子气藏。通过结合最近淬火大质量星系统计样本的解析运动学、恒星年龄分布、剩余气体含量和视觉形态，并与 SIMBA 宇宙学模拟中淬火的时间尺度和随机性进行比较，该项目将确定驱动蓝星形成、旋转、盘状星系转变为红死的主要淬灭机制， 运动学热，球体。此外，该团队还将扩展一项经过验证的计划，以扩大和加强对普林斯顿大学和匹兹堡大学学士后学生的支持。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力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

Merger Signatures are Common, but not Universal, in Massive, Recently Quenched Galaxies at z ∼ 0.7

在 z ≤ 0.7 的大型近期淬灭星系中，合并特征很常见，但并不普遍

• DOI: 10.3847/1538-4357/acc38b
• 发表时间: 2023
• 期刊: The Astrophysical Journal
• 作者: Verrico, Margaret E.;Setton, David J.;Bezanson, Rachel;Greene, Jenny E.;Suess, Katherine A.;Goulding, Andy D.;Spilker, Justin S.;Kriek, Mariska;Feldmann, Robert;Narayanan, Desika
• 通讯作者: Narayanan, Desika

DESI Survey Validation Spectra Reveal an Increasing Fraction of Recently Quenched Galaxies at z ∼ 1

• DOI: 10.3847/2041-8213/acc9b5
• 发表时间: 2022-12
• 期刊: The Astrophysical Journal Letters
• 作者: David J. Setton;B. Dey;G. Khullar;R. Bezanson;J. Newman;J. Aguilar;S. Ahlen;B. Andrews;D. Brooks;A. de la Macorra;A. Dey;S. Eftekharzadeh;A. Font-Ribera;S. G. A Gontcho;A. Kremin;S. Juneau;M. Landriau;A. Meisner;R. Miquel;J. Moustakas;Alan N. Pearl;F. Prada;G. Tarlé;M. Siudek;B. Weaver;Zhi-min Zhou;H. Zou

SQuIGG E Survey: Massive z ∼ 0.6 Post-starburst Galaxies Exhibit Flat Age Gradients

SQuIGG E 调查：大质量 z ≤ 0.6 后星暴星系表现出平坦的年龄梯度

• DOI: 10.3847/1538-4357/abc265
• 发表时间: 2020
• 期刊: The Astrophysical Journal
• 作者: Setton, David J.;Bezanson, Rachel;Suess, Katherine A.;Hunt, Qiana;Greene, Jenny E.;Kriek, Mariska;Spilker, Justin S.;Feldmann, Robert;Narayanan, Desika
• 通讯作者: Narayanan, Desika

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

Star Formation Suppression by Tidal Removal of Cold Molecular Gas from an Intermediate-redshift Massive Post-starburst Galaxy

中红移大质量星暴后星系潮汐去除冷分子气体抑制恒星形成

• DOI: 10.3847/2041-8213/ac75ea
• 发表时间: 2022
• 期刊: The Astrophysical Journal Letters
• 作者: Spilker, Justin S.;Suess, Katherine A.;Setton, David J.;Bezanson, Rachel;Feldmann, Robert;Greene, Jenny E.;Kriek, Mariska;Lower, Sidney;Narayanan, Desika;Verrico, Margaret
• 通讯作者: Verrico, Margaret