Characterizing Companions of the Most Massive Stars

描述最大质量恒星的伴星

• 批准号: 0908249
• 负责人: Henry Kobulnicky
• 金额: $ 39.92万
• 依托单位: University of Wyoming
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0908249&HistoricalAwards=false
• 关键词: Characterizing; Companions; Most; Massive; Stars

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Dr. Henry Kobulnicky will continue a long-term observational program at the University of Wyoming to determine the properties of close massive binary stars. He will lead a team of graduate students, undergraduates, secondary school teachers and their students to measure the frequencies, mass ratios, periods, and rotation rates in the populous young Cygnus OB2 Association. Close massive binary systems are the progenitors of energetic phenomena such as X-ray binaries and some classes of supernovae and gamma-ray bursts. Population synthesis models that predict the frequency of these events require reliable estimates of the binary frequency, mass ratios, and period distributions. Binary statistics also constrain models for the formation of massive stars.This project will include the participation of students from several of Wyoming's community colleges through on ongoing collaboration with faculty at Casper College and Northwest College. It will also support the operation of Wyoming Astrocamp through 2013. Astrocamp is a long-term education/research partnership between Wyoming's science teachers, junior-high students, college students, and organizations serving at-risk youth. Astrocamp will consist of a one-week summer college experience for junior high students and a weekend camp for youth from Wyoming's Boys and Girls Clubs. Astrocamp's goals are closely tied to educational standards of the State of Wyoming.

该奖项是根据2009年《美国回收与再投资法》（公共法第111-5）.DR资助的。亨利·科布尼克（Henry Kobulnicky）将继续在怀俄明大学（University of Wyoming）继续一项长期观察计划，以确定近距离大规模二进制恒星的特性。他将领导一组研究生，本科生，中学教师及其学生，以测量人口众多的年轻Cygnus OB2协会中的频率，质量比，期间和轮换率。近距离的二元系统是能量现象的祖细胞，例如X射线二进制物以及一些类别的超新星和伽马射线爆发。预测这些事件频率的种群合成模型需要对二元频率，质量比和周期分布的可靠估计。二进制统计数据还限制了大型恒星形成的模型。本项目将包括怀俄明州几所社区学院的学生参与与卡斯珀学院和西北学院的教职员工的持续合作。 它还将支持怀俄明州的星座胶带到2013年的运作。星系杆是怀俄明州的科学教师，初中学生，大学生和为高风险青年服务的组织之间的长期教育/研究伙伴关系。 Astrocamp将包括一个为期一周的夏季大学经验，为初中学生和一个周末的Wyoming男孩和女孩俱乐部的年轻人组成。星系杆的目标与怀俄明州状况的教育标准紧密相关。