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

这项建议要求拨款，让梁锦澄博士，教授 物理学和天文学，内布拉斯加大学林肯分校，追求 与韩国延世大学Il-Seong Nha博士合作，为期24年 几个月，一个关于接触和半接触的合作研究计划 二元星星系统中的情况B质量交换系统。 这些 科学家们将对一些 这些系统的周期从长到非常长（11天到96天 天）。 这项研究的结果可用于检查或 比较理论模型的预测， 未来的双星星系统理论模型。 本项目涉及对常规大气的观测和分析， 一种相对未被观测到的双星的亮度变化 恒星之间的距离足够近， 进化，但相隔足够远，革命的时期是许多 天 对这些双星的研究对于 了解恒星的演化， 复杂的，通常是爆炸性的双星。 这个项目是相关的 美国的目标-韩国合作科学计划， 寻求提高美国和韩国之间的合作水平， 科学家和工程师通过科学交流， 信息，想法，技能和技术，并通过合作， 互利的问题。 美国和韩国的合作者是 具有丰富研究经验的备受尊敬的科学家， 在提案领域的生产性出版物记录。

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.