| Discovery of Five Narrow-Line Seyfert 1 Galaxies and Im- plications on the NLS1 Model |
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| 引用本文： | Jiang-Hua Wu,Xiang-Tao He,Yang Chen and Wolfgang Voges1 National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012, jhwu2 Department of Astronomy,Beijing Normal University,Beijing 1008753 Max-Planck-Institut fur Extraterrestrische Physik,D-85740 Garching,Germany. Discovery of Five Narrow-Line Seyfert 1 Galaxies and Im- plications on the NLS1 Model[J]. 中国天文和天体物理学报, 2003, 0(5) |
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| 作者姓名： | Jiang-Hua Wu Xiang-Tao He Yang Chen and Wolfgang Voges1 National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 jhwu2 Department of Astronomy Beijing Normal University Beijing 1008753 Max-Planck-Institut fur Extraterrestrische Physik D-85740 Garching Germany |
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| 作者单位： | Jiang-Hua Wu，Xiang-Tao He，Yang Chen and Wolfgang Voges1 National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012; jhwu2 Department of Astronomy，Beijing Normal University，Beijing 1008753 Max-Planck-Institut fur Extraterrestrische Physik，D-85740 Garching，Germany |
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| 摘 要： | We report the discovery of five Narrow-Line Seyfert 1 galaxies (NLSls) identified from the ROSAT All-Sky Survey bright sources. One of them has a quasar-like luminosity and two, including the quasar-like one, have close companions and/or show interacting features. We calculate the central black hole masses and Eddington ratios for the five NLSls. In combination with the objects of Kaspi et al., we find that NLSls have smaller central black hole masses and higher accretion rate than normal Seyfert 1s.
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Discovery of Five Narrow-Line Seyfert 1 Galaxies and Im- plications on the NLS1 Model |
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| Jiang-Hua Wu,Xiang-Tao He,Yang Chen and Wolfgang Voges National Astronomical Observatories,Chinese Academy of Sciences,Beijing , jhwu. Discovery of Five Narrow-Line Seyfert 1 Galaxies and Im- plications on the NLS1 Model[J]. Chinese Journal of Astronomy and Astrophysics, 2003, 0(5) |
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| Authors: | Jiang-Hua Wu Xiang-Tao He Yang Chen Wolfgang Voges National Astronomical Observatories Chinese Academy of Sciences Beijing jhwu |
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| Affiliation: | Jiang-Hua Wu,Xiang-Tao He,Yang Chen and Wolfgang Voges1 National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012, jhwu2 Department of Astronomy,Beijing Normal University,Beijing 1008753 Max-Planck-Institut fur Extraterrestrische Physik,D-85740 Garching,Germany |
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| Abstract: | We report the discovery of five Narrow-Line Seyfert 1 galaxies (NLSls) identified from the ROSAT All-Sky Survey bright sources. One of them has a quasar-like luminosity and two, including the quasar-like one, have close companions and/or show interacting features. We calculate the central black hole masses and Eddington ratios for the five NLSls. In combination with the objects of Kaspi et al., we find that NLSls have smaller central black hole masses and higher accretion rate than normal Seyfert 1s. |
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| Keywords: | black hole physics - galaxy: active - galaxy: Seyfert - X-ray: galaxy |
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