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arXiv 0811.2240astro-ph
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关于类氦K ALPHA络合物的卫星线的重要性和钙、铁和镍的G比

On the importance of satellite lines to the He-like K ALPHA complex and the G ratio for calcium, iron, and nickel

J. Oelgoetz, C. J. Fontes, H. L. Zhang, S. N. Nahar, A. K. Pradhan

摘要:

新的,更详细的计算的发射光谱的氦样K α复合物的钙,铁和镍已进行了使用数据从扭曲波和R-矩阵计算。GD比的值(一个扩展的定义的G比,占解决和未解决的卫星线的影响)显着增强的温度低于He样的最大丰度的温度。此外,它表明,卫星线是重要的贡献者的GD比,GD/G> 1的温度远高于最大丰度的温度。这些新的计算表明,与KLn(n>= 3)卫星线的改进处理,KALPHA卫星线需要包括在模型中的He类光谱,即使在相对较高的温度。从R-矩阵和畸变波数据计算的光谱和线比之间的良好协议也证实了模型的有效性的基础上畸变波数据高度带电的系统,提供的共振的影响被考虑作为独立的过程。

英文摘要:

New, more detailed calculations of the emission spectra of the He-like K ALPHA complex of calcium, iron and nickel have been carried out using data from both distorted-wave and R-matrix calculations. The value of the GD ratio (an extended definition of the G ratio that accounts for the effect of resolved and unresolved satellite lines) is significantly enhanced at temperatures below the temperature of He-like maximum abundance. Furthermore it is shown that satellite lines are important contributors to the GD ratio such that GD/G>1 at temperatures well above the temperature of maximum abundance. These new calculations demonstrate, with an improved treatment of the KLn (n>=3) satellite lines, that K ALPHA satellite lines need to be included in models of He like spectra even at relatively high temperatures. The excellent agreement between spectra and line ratios calculated from R-matrix and distorted-wave data also confirms the validity of models based on distorted-wave data for highly charged systems, provided the effect of resonances are taken into account as independent processes.

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