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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Low-ionization emission-line regions around the nucleus of the Seyfert galaxy NGC 1068
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Low-ionization emission-line regions around the nucleus of the Seyfert galaxy NGC 1068

机译：塞弗特星系NGC 1068核周围的低电离发射线区域

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摘要

We present the results of tridimensional spectrophotometric observations of the central region of the Seyfert galaxy NGC 1068 obtained by using Kyoto tridimensional spectrograph I. A brief description of the instrument is presented. We have found the existence of low-ionized gas extending out of the ionization cone. It is characterized by higher ([S II]lambda6716 + lambda6731)/Halpha than within the cone. The ratio peaks at 5"-6" east and west of the nucleus and reaches to 0.5-0.6. The ionization of the gas outside the cone by the scattered nuclear continuum is examined. We argue that a substantial fraction of the gases outside the cone could be ionized by the scattered nuclear continuum, including the diffuse arc structure seen in an HST image. In addition, we also attempt discussions according to the kinematic and spectroscopic properties of two possible gaseous components derived by the line decomposition: a narrow component that seems to follow the galactic rotation, and a broad one that may be deviated from it.
机译：我们介绍了使用京都三维光谱仪I获得的塞弗特星系NGC 1068中心区域的三维分光光度观测结果。介绍了该仪器的简要说明。我们发现存在从电离锥向外延伸的低电离气体。它的特征是比视锥细胞内更高的（[S] lambda6716 + lambda6731）/ Halpha。该比率在原子核的东和西5“ -6”处达到峰值，并达到0.5-0.6。检查了锥体外部气体被散射核连续体电离的情况。我们认为，锥体外的大部分气体可能会被散射的核连续体电离，包括在HST图像中看到的扩散弧结构。此外，我们还根据线分解所衍生出的两种可能的气态成分的运动学和光谱学特性进行了尝试：一种似乎跟随银河旋转的狭窄组分，另一种可能偏离银河系旋转的组分。

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