Collaborative Research: Chemical History of the Milky Way as Seen Through Open Clusters using SDSS and Gaia

合作研究：使用 SDSS 和 Gaia 通过疏散星团观察银河系的化学历史

• 批准号: 2206543
• 负责人: Katia Cunha
• 金额: $ 5.54万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-01 至 2025-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2206543&HistoricalAwards=false
• 关键词: Collaborative; Research; Chemical; History; Milky

Throughout the history of the Universe galaxies change and grow. Astronomers are working to understand how the chemical make-up of the stars within galaxies change with time. By measuring how, and when, specific elements increase, the investigators will create 'chemical clocks' that trace the chemical changes during the life of the Milky Way Galaxy. This research team will measure the chemical makeup of nearly all the suitable star clusters in the Milky Way disk. This project will serve the national interest and promote the progress of research in astronomy by providing a unique catalog that can be used to probe the history of the Milky Way. The investigators will carry out mentoring and outreach activities at the University of Utah and at Texas Christian University's Monnig Meteorite Gallery. They will also train graduate and undergraduate students in modern data science research and analysis techniques. Using high-resolution spectroscopy from the Sloan Digital Sky Survey V (SDSS-V) and astrometry from the Gaia satellite, this research team will observe, compile, and analyze a catalog of open star clusters. This catalog will be revolutionary in its size and uniformity. Additional high-resolution optical spectroscopy will supplement the SDSS-V data with neutron-capture elemental abundances to create a unique catalog comprising up to 90% of the Gaia-confirmed open star clusters with homogeneous data, including consistently measured ages, distances, reddening, dynamics, and detailed abundances for more than 20 elements. This data set, which will be publicly released, will provide key constraints on whether chemical tagging can work in the Milky Way disk, on the participation of open clusters in radial migration, and on supernovae element yields. The catalog will be used to better understand stellar feedback over time and test cosmological models of galaxies like our Milky Way.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.

在宇宙星系的整个历史中，变化和增长。天文学家正在努力了解星系中恒星的化学构成如何随时间变化。通过测量特定元素的增加以及何时增加，研究人员将创建“化学时钟”，从而追踪银河系生命期间的化学变化。 该研究团队将在银河系磁盘中测量几乎所有合适的星团的化学构成。该项目将通过提供一个独特的目录来探讨银河系历史，以促进国家利益并促进天文学的研究进步。调查人员将在犹他大学和德克萨斯基督教大学的Monnig Meteorite画廊进行指导和外展活动。他们还将培训现代数据科学研究和分析技术的毕业生和本科生。该研究团队将使用Sloan Digital Sky Survey V（SDSS-V）（SDSS-V）（SDSS-V）的高分辨率光谱法，该研究团队将观察，编译和分析开放型星团的目录。该目录的规模和统一性将是革命性的。其他高分辨率的光谱光谱将以中子捕获的元素丰度补充SDSS-V数据，以创建一个独特的目录，其中包括高达90％的Gaia confircunded open Star clusters，其中包含具有同质数据的Gaia confiend open Star群集，包括始终测量的年龄，距离，距离，距离，详细的，动态，动态，动态和20个元素的详细信息。 该数据集将公开发布，将对化学标记是否可以在银河系磁盘，开放簇参与径向迁移以及超新星元素的产量方面提供关键限制。 该目录将用于更好地了解随着时间的流逝，并测试星系的宇宙学模型，例如我们的银河系。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和更广泛影响的评估评估标准来通过评估来支持的。