U.S.-Korea Cooperative Research on Contact and Semidetached Close Binary Systems of Case B Mass Exchange

美韩合作研究案例B质量交换的接触式和半分离式封闭二元系统

• 批准号: 8616425
• 负责人: Kam Ching Leung
• 金额: $ 2.6万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-15 至 1990-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8616425&HistoricalAwards=false
• 关键词: U.S.; Korea; Cooperative; Research; Contact

This proposal requests funds to permit Dr. Kam-Ching Leung, Professor of Physics and Astronomy, University of Nebraska-Lincoln, to pursue with Dr. Il-Seong Nha, Yonsei University, Korea, for a period of 24 months, a program of cooperative research on contact and semidetached systems of case B mass exchange in binary star systems. These scientists will make a photoelectric observational study of a number of such systems with periods ranging from long to very long (11 days to 96 days). The results of this research could be used for checking or comparing the predictions of theoretical models and for construction of future theoretical models of binary star systems. This project deals with observations and analysis of the regular changes in brightness of a relatively unobserved category of binary stars which are close enough to each other so as to alter each other's evolution but far enough apart that the period of revolution is many days. The investigation of these binary stars is important for understanding the evolution of stars and for understanding the more complicated, often explosive, binary stars. This project is relevant to the objectives of the U.S.-Korea Cooperative Science Program which seeks to increase the level of cooperation between U.S. and Korean scientists and engineers through the exchange of scientific information, ideas, skills, and techniques and through collaboration on problems of mutual benefit. The U.S. and Korean collaborators are highly respected scientists who have extensive research experience and productive publication records in the field of the proposal.

该提案请求资金允许内布拉斯加大学林肯分校物理和天文学教授 Kam-Ching Leung 博士与韩国延世大学 Il-Seong Nha 博士一起开展为期 24 个月的项目双星系统中案例B质量交换的接触和半分离系统的合作研究。 这些科学家将对许多此类系统进行光电观测研究，周期从长到很长（11天到96天）不等。 这项研究的结果可用于检验或比较理论模型的预测以及构建未来双星系统的理论模型。 该项目涉及对一类相对未被观测到的双星亮度的规律变化进行观察和分析，这些双星彼此足够接近，足以改变彼此的演化，但又相距足够远，以至于公转周期为许多天。 对这些双星的研究对于了解恒星的演化以及了解更复杂、通常是爆炸性的双星非常重要。 该项目与美韩合作科学计划的目标相关，该计划旨在通过科学信息、思想、技能和技术的交流以及就共同关心的问题进行合作，提高美国和韩国科学家和工程师之间的合作水平。益处。 美国和韩国的合作者都是备受尊敬的科学家，他们在该提案领域拥有丰富的研究经验和富有成效的发表记录。