Deciphering the Origin of Intracluster and Intercluster Inhomogeneities of the CNO Elements Within the Galactic Globular Cluster System

破译银河球状星团系统内 CNO 元素的簇内和簇间不均匀性的起源

• 批准号: 9217970
• 负责人: Robert Kraft
• 金额: $ 13.96万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-04-01 至 1997-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9217970&HistoricalAwards=false
• 关键词: Deciphering; Origin; Intracluster; Intercluster; Inhomogeneities

The use of globular cluster stars to study early chemical enrichment in the galaxy is rendered uncertain by the existence of stars in the same cluster with different surface abundances of carbon, nitrogen, oxygen and possibly other elements. To clarify the causes of this, a systematic survey of the chemical abundances of stars in different evolutionary states in various clusters will be made. This investigation is possible for the first time due to the capabilities of new instrumentation at Lick Observatory and the Keck Telescope in Hawaii.

由于同一星系团中存在不同表面碳、氮、氧和其他元素丰度不同的恒星，利用球状星团恒星研究银河系早期化学丰度的可能性变得不确定。为了阐明这一原因，我们将对不同星团中处于不同演化状态的恒星的化学丰度进行系统的调查。由于利克天文台和夏威夷凯克望远镜的新仪器的能力，这项调查首次成为可能。