论文标题
2型衬套的光谱
Optical spectroscopy of type-2 LINERs
论文作者
论文摘要
低离世的核发射线区域（衬里）是活性银河核（AGN）当地群体中最小的，最多的。如果它们的光谱显示或不显示广泛的组件，则可以将它们归类为1型或类型-2。它与这些系统中的宽线区域（BLR）有关。然而，最近的研究证明，1型衬里的分类可能是有争议的，因为空间和地面光谱学为存在非常广泛的组件提供了矛盾的结果（Cazzoli等人，2018年）。我们已经研究了具有中间光谱分辨率HST/STIS数据的9型2型衬里的核谱。我们介绍了对不同光谱成分的分析的结果，并讨论了类型2衬里星系中BLR成分的最终存在，以及与1型衬里相比的流出可能存在。我们在HST/STIS数据中的9个分析对象中的7个中发现了BLR组件。
Low-Ionisation Nuclear Emission-line Regions (LINERs) are the least luminous and the most numerous among the local population of Active Galactic Nuclei (AGN). They can be classified as type-1 or type-2 if their optical spectra show or do not show, respectively, a broad component. It is associated with the presence of a Broad Line Region (BLR) in these systems. However, recent studies have proven that the classification of type-1 LINERs may be controversial, since space- and ground-based spectroscopy provide contradicting results on the presence of very broad components (Cazzoli et al. 2018). We have studied the nuclear spectra of 9 type-2 LINERs with intermediate spectral resolution HST/STIS data. We present the results on our analysis of the different spectral components, and discuss the eventual presence of BLR components in type-2 LINER galaxies, together with the possible presence of outflows, both in comparison with type-1 LINERs. We have found a BLR component in 7 out of the 9 analysed objects within the HST/STIS data.
