SOFT X-RAY EMISSION LINES OF S vii–S xiv IN PROCYON
SOFT X-RAY EMISSION LINES OF S vii–S xiv IN PROCYON
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DOI：
10.1088/0004-637x/762/1/53
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
F. Li;G. Liang;G. Zhao
中科院分区：
文献类型：
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作者：
F. Li;G. Liang;G. Zhao
从钱德拉数据公共档案馆获得的凉爽恒星Procyon的观测数据被共同添加到一起，并以尽可能高的信噪比进行分析。本文研究了高电荷态硫离子(S七-S十五)的软X射线发射线。利用R-矩阵方法的最新激发数据，建立了一个碰撞-辐射模型来预测硫离子的线发射率。计算了理论谱线通量和谱线强度比，并用线宽为0.06？的高斯分布构造了理论光谱。通过将预测的发射线与观测的发射线进行比较，首次识别出几条强发射线。也纠正了以前作品中一些错误的线条分配。通过将我们的结果与基安蒂红酒(V6)模型的结果进行比较，这项工作提供了对基安蒂红酒(V6)数据库中硫离子原子数据的完整性和准确性的洞察。
Observational data for cool star Procyon available from the Chandra Data Public Archive are co-added and analyzed with as high a signal-to-noise ratio as possible. The soft X-ray emission lines of highly charged sulfur ions (S vii–S xv) are investigated in the 30–80 Å range. A collisional-radiative model is constructed to predict line emissivities of sulfur ions using updated excitation data from the R-matrix method. Theoretical line fluxes and line intensity ratios are calculated, and theoretical spectra are constructed with a Gaussian profile with a line width of 0.06 Å. By comparing predicted emission lines with observed ones, several strong emission lines are identified for the first time. Some misassignments of lines in previous works are also corrected. By comparing our results with those from the Chianti (v6) model, this work provides insight into the completeness and accuracy of the atomic data of sulfur ions in the Chianti (v6) database.