大学物理 ›› 2013, Vol. 32 ›› Issue (9): 51-51.

• 著者文摘 • 上一篇    下一篇

三轴椭球体模型下转动双星系统的演化

卢媛[1] 宋汉峰[2,3]   

  1. [1]毕节学院,贵州毕节551700 [2]中国科学院国家天文台·贵州大学天文联合研究中心,贵州贵阳550025 [3]贵州大学理学院,贵州贵阳550025
  • 出版日期:2013-09-25 发布日期:2013-09-20

Evolution based on the model of tri-axial ellipsoid in the rotational binary system

  • Online:2013-09-25 Published:2013-09-20

摘要: 采用三轴椭球体模型和非均匀的星风物质损失的理论计算,数值模拟并分析了转动双星系统的演化.结果表明子星间物质交换和氢开始燃烧提前,主序带变宽,演化更大幅度地向蓝方向运动并形成较大回绕,演化轨迹向低光度偏转,子星半径在慢速物质交换过程中出现周期性的膨胀和收缩,角动量损失率变小.

关键词: 三轴椭球体模型, 星风物质损失, 转动双星系统, 演化

Abstract: By using the model of the tri-axial ellipsoid and theoretical calculations of un-uniform wind loss, the evolution of the rotational binary system is simulated numerically and analyzed. The results have shown that the time of the beginning of mass transfer phase and the central hydrogen-burning phase advanced, the main sequence is wider, the evolution track in the HR diagram shifted towards lower luminosity, a large amplitude of bluer track is caused, the radius has periodic expansion and contraction in the slow mass transfer process, and the angular momentum loss rate is smaller.

Key words: the model of tri-axial ellipsoid, mass loss via stellar wind, the rotational binary system, evolution

中图分类号: 

  • P142