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

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

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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. 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.

作者 Xu D.W. 1,2 1 (Beijing Astronomical Observatory, The Chinese Academy of Sciences, Beijing 100012, China) 2 (National Astronomical Observatories, The Chinese Academy of Sciences, Beijing 100012,China) Email: dwxu @ class 1. bao. ac. cn

出处《天文研究与技术》 CSCD 1999年第S1期315-318,共4页 Astronomical Research & Technology

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

分类号 P172.2 [天文地球—天文学]

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1You－JunLu,Chong－ShanZhao.Relations between the IR-UV-X-ray Continuum and Emission Lines for a Large Composite Sample of Narrow Line and Normal Seyfert 1 Galaxies[J].Chinese Journal of Astronomy and Astrophysics,2001,1(1):39-45.
2吴月芳,王均智,吴京文.A Search for Extremely Young Stellar Objects[J].Chinese Physics Letters,2003,20(8):1409-1412.

天文研究与技术

1999年第S1期

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

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