RUI: Exploring the gas-phase properties of MaNGA galaxies

RUI：探索 MaNGA 星系的气相特性

• 批准号: 2205551
• 负责人: Jillian Scudder
• 金额: $ 22.9万
• 依托单位: Oberlin College
• 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=2205551&HistoricalAwards=false
• 关键词: RUI; Exploring; gas; phase; properties

Much of the chemical enrichment of pristine gas in galaxies is through stellar mass loss and explosions. Principal Investigator (PI) Scudder will use data from the Sloan Digital Sky Survey Mapping Nearby Galaxies at Apache Point (SDSS-MaNGA) to measure the chemical composition of the gas in galaxies. This work will further our understanding of the growth of galaxies through star formation. The PI will offer academic year and summer research opportunities to undergraduate students at Oberlin College.PI Scudder will use archival integral field spectra from the SDSS-MaNGA survey of 10,000 galaxies to determine spatially resolved gas-phase metallicities. The measurements will be assessed for contamination from emission from an active galactic nucleus (AGN). To obtain a more accurate estimate of stellar enrichment the PI will quantify metallicity indicator systematics and biases through a comparison of different calibration methods.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.

星系中原始气体的大部分化学富集是通过恒星质量损失和爆炸产生的。首席研究员（PI）斯卡德将使用来自阿帕奇点附近星系斯隆数字巡天（SDSS-MaNGA）的数据来测量星系中气体的化学成分。这项工作将进一步加深我们对恒星形成过程中星系成长的理解。该项目将为奥柏林学院的本科生提供学年和夏季研究机会。PI Scudder将使用SDSS-MaNGA对10,000个星系进行调查的档案积分场光谱来确定空间分辨的气相金属丰度。这些测量结果将被评估来自活动星系核（AGN）的辐射污染。为了获得更准确的恒星丰度估计，PI将通过比较不同的校准方法来量化金属丰度指标的系统性和偏差。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。