Is There a Link Between Emission-Line Widths and X-Ray Continuum Slopes in Narrow Line Seyfert 1 Galaxies?

被引：0
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作者：
Xu DW Beijing Astronomical Observatory The Chinese Academy of Sciences Beijing China National Astronomical Observatories The Chinese Academy of Sciences Beijing China Email dwxu class bao ac cn [1 ,2 ,1 ,100012 ,2 ,100012 ,1 ]
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来源：
云南天文台台刊 | 1999年 / S1期
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中图分类号：
P172.2 [X射线天文学];
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摘要：
We present the discovery of 18 narrow line Seyfert 1 galaxies (NLS1). The optical spectra show the Balmer lines only slightly broader than the forbidden lines and contain strong Fe Ⅱ emission. No particularly soft X ray spectral slopes can be seen compared to a normal Seyfert 1 galaxies sample.
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页码：315 / 318
页数：4
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