Fe XXII I(11.92 A)/I(11.77 A)密度诊断
天体物理学
2007-05-23 v1
摘要
我们利用Livermore X射线光谱合成器，该仪器基于HULLAC原子数据计算高度带电离子的光谱模型，研究Fe XXII I(11.92 A)/I(11.77 A)线比的温度、密度和光致激发依赖性。应用于对中级极性星EX Hya的Chandra HETG光谱，我们发现其T_e ~ 12 MK等离子体的电子密度为log n_e (cm^-3) = 14.3^{+0.7}_{-0.5}，远高于太阳或其他后类型恒星观测到的密度。
引用
@article{arxiv.astro-ph/0301633,
title = {The Fe XXII I(11.92 A)/I(11.77 A) Density Diagnostic},
author = {Christopher W. Mauche and Duane A. Liedahl and Kevin B. Fournier},
journal= {arXiv preprint arXiv:astro-ph/0301633},
year = {2007}
}
备注
4 pages including 3 encapsulated postscript figures; LaTeX format, uses newpasp.sty; to appear in the ASP Conference Series "IAU Colloquium No. 190--Magnetic Cataclysmic Variables"