A comparison of interstellar Na I, Ca II, and K I absorption

A comparison of interstellar Na I, Ca II, and K I absorption
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星际 Na I、Ca II 和 K I 吸收的比较

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发表时间:
1974
期刊:
影响因子:
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通讯作者:
L. Hobbs
L. Hobbs
中科院分区:
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文献类型:
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作者:
L. Hobbs

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最强和最有用的星际光吸收线包括Na I的D线,Ca II的H和K线,以及K I在7600 A和7664 A的共振双峰。这些最强的原子线的干涉数据进行了全面的检查。与总柱密度有关的数值结果被收集在一个表格中,其中列出了82颗恒星。表中所列的一些数量之间的相关性显示在一些图表中。
The strongest and generally most useful optical interstellar absorption lines include the D lines of Na I, the H and K lines of Ca II, and the resonance doublet at 7600 A and 7664 A of K I. The interferometric data for these strongest atomic lines are examined in a comprehensive manner. The numerical results pertaining to the total column densities are collected in a table, which lists 82 stars. The correlations among some of the quantities listed in the table are displayed in a number of graphs.