为何海亚德星团与普拉塞佩星团的X射线亮度函数不同?
天体物理学
2007-05-23 v1
摘要
我们研究了属于普拉塞佩星团的dF-dK和dM星,依据径向速度确定星座成员,并比较了诸如X射线亮度、H等价宽度等多个星属性与海亚德星团(相似年龄)之间的差异。我们表明,除X射线亮度分布外,两者的所有属性均类似。此现象可能与分析X射线上限亮度的困难有关,或与两个星团中双星率及其双星属性差异有关的更根本的原因有关。
引用
@article{arxiv.astro-ph/9710273,
title = {Why is the X-ray luminosity function different for the Hyades and Praesepe?},
author = {D. Barrado y Navascues and J. R. Stauffer and S. Randich},
journal= {arXiv preprint arXiv:astro-ph/9710273},
year = {2007}
}
备注
4 pages, LATEX file. Mem.S.A.It style macro (Included). Contribution to "Cool Stars in Clusters and Associations: Magnetic Activity and Age Indicators", Palermo, May 1997