High-resolution emission-line imaging of Seyfert galaxies. I - Observations. II - Evidence for anisotropic ionizing radiation
High-resolution emission-line imaging of Seyfert galaxies. I - Observations. II - Evidence for anisotropic ionizing radiation
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赛弗特星系的高分辨率发射线成像。
DOI：
10.1086/166821
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
M. Ward
中科院分区：
文献类型：
--
作者：
C. Haniff;A. Wilson;M. Ward
提出了 11 个 Seyfert 星系的 CCD 直接成像巡天，平均视宁度为 1.3 弧秒 FWHM。研究发现，环核发射线气体的主轴和空间尺度与射电连续谱源的主轴和空间尺度非常相似。在第二部分中，研究了热气体和相对论性气体之间的这种密切联系。提出了一种场景，其中射电射流和等离子体团冲击、加速和压缩周围气体和夹带气体，电离的主要来源是非恒星核紫外连续谱。
A CCD direct imaging survey of 11 Seyfert galaxies with a mean seeing of 1.3 arcsec FWHM is presented. It is found that the major axes and spatial scales of the circumnuclear emission-line gas are very similar to those of the radio continuum sources. In the second part, this close connection between thermal and relativistic gases is examined. A scenario is proposed in which the radio jets and plasmoids shock, accelerate, and compress ambient and entrained gas, with the dominant source of ionization being the nonstellar nuclear UV continuum.