Towards Ascertaining the Origins of Cataclysmic Variables Through Abundance Analyses

通过丰度分析确定灾难性变量的起源

• 批准号: 1209451
• 负责人: Thomas Harrison
• 金额: $ 26.89万
• 依托单位: New Mexico State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-15 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1209451&HistoricalAwards=false
• 关键词: Towards; Ascertaining; Origins; Cataclysmic; Variables

This award will support a study the origins of compact binary stars in cataclysmic variable systems that may be the progenitors of some types of supernovae. Spectroscopy will be used to provide accurate masses and temperatures of the components of several binaries, and will be used to constrain the interior structure of the binary members. The main goals of this work will be to constrain the current evolutionary state of the secondary stars in these systems, to identify the properties of the progenitors, and to provide additional constraints on the processes associated with the evolution of interacting binaries, including constraints on the important, but poorly understood, common envelope phase.The origins of supernovae are still under considerable debate, and astronomers are attempting to understand which types of stars eventually end their lives explosively. Many details, particularly of the evolution of progenitor stars, remain poorly understood.

该奖项将支持一项研究，在灾难性变量系统中，紧凑型二元星的起源可能是某些类型的超新星的祖细胞。 光谱法将用于提供几种二进制组的成分的准确质量和温度，并将用于约束二元成员的内部结构。 这项工作的主要目标将是限制这些系统中次要恒星的当前进化状态，以确定祖细胞的特性，并为与互动二进制的演变相关的过程提供其他限制，包括对重要的，但对众所周知的众所周知，众所周知的构想，最终是在超级群体中的生命，以及众所周知的始于有知识的人，以及天文学的始终是天主的，天文学的始终是众所周知的。爆炸性。 许多细节，尤其是祖细胞恒星的进化，仍然对知识很少。