论文标题
Circinus Galaxy中的700-PC延长冠状气体排放
A 700-pc extended coronal gas emission in the Circinus galaxy
论文作者
论文摘要
我们报告了通过冠状线[FEVII] $λ$6087Å的方式，报告了Circinus Galaxy中高电离气体的扩展流出的首次表征。该发射位于在[OIII] $λ$5007Å线中已经检测到的电离锥内，发现延伸至距AGN 700 pc的距离。气体分布显得块状，并带有几个结。它的运动学很复杂，分裂曲线和线质体从全身速度转移。气体的物理条件表明，延长的冠状发射可能是射线喷射通过的壳膨胀的残余物。这种情况得到了扩展的X射线发射的支持，在空间上，这与[FEVII] $λ$ 6087〜的形态和扩展在银河系的西北侧。冠状星系中冠状气体的扩展在活动星系中是独一无二的，并证明了冠状线在追踪这些物体中的冲击电离成分的有用性。
We report the first characterization of an extended outflow of high ionized gas in the Circinus Galaxy by means of the coronal line [FeVII] $λ$6087 Å. This emission is located within the ionization cone already detected in the [OIII] $λ$5007 Å line and is found to extend up to a distance of 700 pc from the AGN. The gas distribution appears clumpy, with several knots of emission. Its kinematics is complex, with split profiles and line centroids shifted from the systemic velocity. The physical conditions of the gas show that the extended coronal emission is likely the remnants of shells inflated by the passage of a radio-jet. This scenario is supported by extended X-ray emission, which is spatially coincident with the morphology and extension of the [FeVII] $λ$6087~Å gas in the NW side of the galaxy. The extension of the coronal gas in the Circinus galaxy is unique among active galaxies and demonstrates the usefulness of coronal lines for tracing the shock ionization component in these objects.
