致密射电源中的快速流出：射电源演化早期阶段活动星系核诱导反馈的证据
Fast outflows in compact radio sources: evidence for AGN-induced feedback in the early stages of radio source evolution
摘要：
我们提出了中等分辨率，宽波长覆盖范围的光谱的完整样本的14个紧凑的无线电源采取的目的是调查的影响，核活动的环核（ISM）在早期阶段的无线电源的演变。我们观察到的空间扩展线发射（高达20千秒差距）在大多数的来源，这是一个静态的晕一致。在核孔中，我们观察到广泛的，高度复杂的发射线轮廓。[O III]5007线的多重高斯模型揭示了2-4个分量，其相对于晕的半高宽和蓝移可达2000 km/s。我们解释这些广泛的，蓝移的组件作为流出的材料，并讨论了喷气驱动流出的运动学证据。与文献中的样本比较表明，紧凑的无线电源港口更极端的核运动学比他们的扩展同行，在我们的样本中看到的趋势与更大的速度在较小的来源。观测到的速度也可能受到相对于观测者视线的源方向的影响。九个来源与HI吸收有关。与光学发射线气体一样，HI分布通常非常复杂，大多数检测到的成分显著蓝移，追踪中性气体中的流出。根据Holt等人（2003年）对PKS 1345 +12的建议，对样品进行了ISM分层测试（FWHM/电离电位/临界密度），但我们使用Spearman秩分析发现样品中没有显著趋势。这项研究支持的想法，紧凑的无线电源是年轻的无线电大声活动星系核在其演化的早期阶段，目前通过极端的环核流出脱落其出生茧。
英文摘要：
We present intermediate resolution, wide wavelength coverage spectra for a complete sample of 14 compact radio sources taken with the aim of investigating the impact of the nuclear activity on the circumnuclear (ISM) in the early stages of radio source evolution. We observe spatially extended line emission (up to 20 kpc) in the majority of sources which is consistent with a quiescent halo. In the nuclear apertures we observe broad, highly complex emission line profiles. Multiple Gaussian modelling of the [O III]5007 line reveals 2-4 components which can have FWHM and blueshifts relative to the halo of up to 2000 km/s. We interpret these broad, blueshifted components as material in outflow and discuss the kinematical evidence for jet-driven outflows. Comparisons with samples in the literature show that compact radio sources harbour more extreme nuclear kinematics than their extended counterparts, a trend seen within our sample with larger velocities in the smaller sources. The observed velocities are also likely to be influenced by source orientation with respect to the observer's line of sight. Nine sources have associated HI absorption. In common with the optical emission line gas, the HI profiles are often highly complex with the majority of the detected components significantly blueshifted, tracing outflows in the neutral gas. The sample has been tested for stratification in the ISM (FWHM/ionisation potential/critical density) as suggested by Holt et al. (2003) for PKS1345+12 but we find no significant trends within the sample using a Spearman Rank analysis. This study supports the idea that compact radio sources are young radio loud AGN observed during the early stages of their evolution and currently shedding their natal cocoons through extreme circumnuclear outflows.
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