Time Variations in the Emission Lines of of Stars
Time Variations in the Emission Lines of of Stars
复制标题
恒星发射线的时间变化
DOI：
10.1093/mnras/153.4.435
复制
发表时间：
1971
影响因子：
4.8
通讯作者：
R. Brucato
中科院分区：
文献类型：
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作者：
R. Brucato
已经获得了HD 108、HD 188001(9SGE)、HD 190429N、HD 192639、HD 210839(λCEP)以及在42ümm-1处HD 66811(ζPup)恒星的光谱图，覆盖了H SGE和H SGE之间的倒数弥散为28？mm-1的区域。已经测量了几个光谱特征的等效宽度，特别是NiIIλλ4634-40-41和HeIIλ4686。这些谱线的强度在几颗恒星中随时间尺度在10分钟量级上有所不同，其中最显著的变化发生在λ4686，属于最早的光谱类型。
Spectrograms covering the region between Hβand Hγat a reciprocal dispersion of 28 Å mm–1have been obtained for the Of stars HD 108, HD 188001 (9 Sge), HD 190429N, HD 192639, HD 210839 (λ Cep), and, at 42 Å mm–1, HD 66811 (ζ Pup). Equivalent widths have been measured for several spectral features, particularly NIIIλλ4634–40–41 and HeIIλ4686. The strengths of these lines are shown to vary in several of these stars with time scales on the the order of 10 min, with the most striking changes occurring at λ4686 in the earliest spectral types.