Spectral variations in the broad-line region of NGC 6814
Spectral variations in the broad-line region of NGC 6814
复制标题
NGC 6814 宽线区域的光谱变化
DOI：
10.1093/mnras/245.1.66
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发表时间：
1990
影响因子：
4.8
通讯作者：
J. Menzies
中科院分区：
文献类型：
--
作者：
K. Sekiguchi;J. Menzies
我们目前的光谱塞弗特星系NGC 6814在SAAO获得了两年的时间从1983年5月至1985年10月。在此期间，光谱从塞弗特1变为更接近于塞弗特1.8-1.9。两个月内，Hβ通量下降了2倍以上。宽巴耳末发射线强度的降低与X射线输出的降低相结合。
We present optical spectroscopy of the Seyfert galaxy NGC 6814 obtained at the SAAO over a two-year period from 1983 May to 1985 October. During this period, the spectrum changed from Seyfert 1 to more closely resemble that of Seyfert 1.8-1.9. The Hβ flux decreased by more than a factor of 2 within two months. The decrease in the broad Balmer emission line strength was coupled with a decrease in the X-ray output.