Compaction in Action: Blue, Green, and Red Nuggets at Redshift Zero

压实实践：红移零时的蓝色、绿色和红色块

• 批准号: 2007351
• 负责人: Sheila Kannappan
• 金额: $ 43.06万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-15 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2007351&HistoricalAwards=false
• 关键词: Compaction; Action; Blue; Green; Red

This project will use existing survey data along with new observations to study compact galaxies across different stages of their evolution. As gas clouds collide, they are thought to produce compact blue galaxies (called "blue nuggets") that are undergoing rapid star formation. As the blue nuggets continue to accrete gas, their star formation will decrease, leaving behind compact red galaxies (called "red nuggets") that eventually form elliptical galaxies through accretion of satellite galaxies. This project will study the nearby population of blue nuggets, red nuggets, and nuggets in transition (so-called "green nuggets"). The project will be able to look at all phases of nugget evolution and better understand how star formation and colliding streams of gas produce these objects and influence their structure. The project will also make the data available for the astronomical community and provide tools so that the data can be used in education. The project will support a two-week Computational Astronomy & Physics Boot Camp for undergraduates and post-baccalaureates who may not have the resources to participate in research over the entire summer.This project will perform a systematic study of blue, red, and green nuggets in the z=0 RESOLVE (REsolved Spectroscopy Of a Local VolumE) survey. The research will look at understanding how and when blue nuggets quench, whether colliding-stream compaction still occurs at redshift zero, and how nuggets evolve structurally as the pass from blue through green and on to red. The project will use RESOLVE's environment metrics, multi-wavelength photometry, optical spectroscopy, and 21 cm HI gas observations. This data will be supplemented by data from other observations to look for kinematic signatures of colliding streams, mergers, tidal stripping, and disk rebuilding. The project will expand the utility of RESOLVE's searchable online database by creating a new Data Science Portal providing computational methods tutorials, example data analysis projects, and suggested tutorial sequences. The project will conduct a two-week Computational Astronomy & Physics Boot Camp, which will serve five undergraduate and post-baccalaureate students per year.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.

该项目将使用现有的调查数据以及新的观察结果来研究其进化的不同阶段的紧凑星系。随着气云的碰撞，人们认为它们会产生紧凑的蓝色星系（称为“蓝色块”），这些星系正在经历快速恒星的形成。随着蓝色掘金继续吸收气体，它们的恒星形成将减少，留下紧凑的红色星系（称为“红色掘金”），最终通过卫星星系的积聚形成椭圆星系。该项目将研究附近的蓝块，红土和过渡中的掘金（所谓的“绿色块”）。该项目将能够查看掘金演化的所有阶段，并更好地了解恒星形成和碰撞气体如何产生这些物体并影响其结构。该项目还将为天文学界提供数据，并提供工具，以便可以将数据用于教育。该项目将支持为期两周的计算天文学和物理训练营，以针对本科生和学后后的研究，他们可能没有资源在整个夏季参与研究。此项目将对蓝色，红色和绿色块的系统进行系统的研究在Z = 0分辨率（局部体积的分辨光谱）调查中。这项研究将考虑了解蓝色金块如何以及何时淬火，碰撞流压实是否仍在Redshift Zero处发生，以及随着从蓝色到绿色和红色的岩石如何在结构上演变。该项目将使用Resolve的环境指标，多波长光度法，光谱和21厘米HI气体观测值。这些数据将通过来自其他观察结果的数据来补充，以查找碰撞流，合并，潮汐剥离和磁盘重建的运动学特征。该项目将通过创建一个新的数据科学门户网站，提供计算方法教程，示例数据分析项目和建议的教程序列来扩展Resolve的可搜索在线数据库的实用性。该项目将进行为期两周的计算天文学和物理训练营，该训练营每年将为五个本科生和学士后的学生提供服务。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评估来支持的。影响审查标准。

项目成果

The RESOLVE and ECO Gas in Galaxy Groups Initiative: The Group Finder and the Group H i–Halo Mass Relation

• DOI: 10.3847/1538-4357/acefd4
• 发表时间: 2023-10
• 期刊: The Astrophysical Journal
• 作者: Z. L. Hutchens;S. Kannappan;A. Berlind;Mehnaaz Asad;K. Eckert;David V. Stark;Derrick S. Carr;Ella R. Castelloe;Andrew J. Baker;Kelley M. Hess;A. Moffett;M. Norris;D. Croton

RESOLVE and ECO: Finding Low-metallicity z ∼ 0 Dwarf AGN Candidates Using Optimized Emission-line Diagnostics

RESOLVE 和 ECO：使用优化发射线诊断寻找低金属度 z ≤ 0 矮 AGN 候选者

• DOI: 10.3847/1538-4357/ac6595
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: Polimera, Mugdha S.;Kannappan, Sheila J.;Richardson, Chris T.;Bittner, Ashley S.;Ferguson, Carlynn;Moffett, Amanda J.;Eckert, Kathleen D.;Bellovary, Jillian M.;Norris, Mark A.
• 通讯作者: Norris, Mark A.