Collaborative Research: Abundance Patterns in Extremely Metal-poor Stars: SNII, Pop III and the Early Galaxy

合作研究：极度贫金属恒星的丰度模式：SNII、Pop III 和早期星系

• 批准号: 0607482
• 负责人: Jennifer Johnson
• 金额: $ 10.96万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0607482&HistoricalAwards=false
• 关键词: Collaborative; Research; Abundance; Patterns; Extremely

AST-0607482INSTITUTION: Ohio State UniversityPI: Jennifer JohnsonTITLE: Collaborative Research: Abundance Patterns in Extremely Metal-poor Stars: SNII, Pop III and the Early GalaxyABSTRACTDr. Jennifer Johnson at the Ohio State University, and Dr. Michael Bolte at the University of California, Santa Cruz, will undertake a program that addresses several fundamental astrophysical issues by the use of chemical abundances in extremely metal-poor (EMP) stars. The main goals of the proposal are to a) securely identify and initially map the abundances of some of these stars by means of moderate-resolution spectroscopy, b) perform follow-up high-resolution observations to carry out detailed chemical abundance mapping, in order to constrain models of supernovae nucleosynthesis and provide insight into early stellar enrichment, c) conduct a survey of elements in globular cluster giant stars using high resolution near-ultraviolet spectra, in order to improve age estimates from nuclear chronometry" techniques, and d) determine the binary star fraction of EMP stars to determine the source(s) of Carbon enrichment at early times.Post-doctoral researchers, graduate students and undergraduates will carry much of the proposed work out. The topic of the origin of the elements will be used to engage the general public and will be used to enhance middle and high school science education. Dr. Bolte and Dr. Johnson will continue to present public talks and to work with local 7-12 science classes. Finally, the Keck-telescope spectra will be freely available by means of a public web site, making the data available for research and educational purposes.

AST-0607482机构：俄亥俄州立大学PI：Jennifer Johnsontitle：协作研究：极为金属贫困的明星中的丰度模式：SNII，POP III和早期的GalaxyabsTractdr。俄亥俄州立大学的珍妮弗·约翰逊（Jennifer Johnson）和加利福尼亚大学圣克鲁斯分校的迈克尔·博尔特（Michael Bolte）将通过一项计划，通过在极其金属贫困（EMP）明星中使用化学丰度来解决几个基本的天体物理问题。 The main goals of the proposal are to a) securely identify and initially map the abundances of some of these stars by means of moderate-resolution spectroscopy, b) perform follow-up high-resolution observations to carry out detailed chemical abundance mapping, in order to constrain models of supernovae nucleosynthesis and provide insight into early stellar enrichment, c) conduct a survey of elements in globular cluster giant stars using high resolution为了改善核时间表的年龄估计“技术”和d）确定EMP恒星的二元星级分数以确定早期碳富集的来源，研究生和本科生将介绍一般的公共努力。教育。博士和约翰逊博士将继续进行公众的谈判，并与当地的7-12科学班合作。最后，Keck-TeleScope Spectra将通过公共网站免费获得，使数据可用于研究和教育目的。