Narrow-line Seyfert 1s (NLS1s) observed at large inclinations from face-on are important for understanding this amazing AGN subclass. However, progress is slowly being made in the huntings and studies of highly obscured ( $\ge 1$ ) NLS1s . Recently, we discovered that multi-wavelength photometric and polarimetric analysis can be of great help in identifying and studying highly obscured NLS1s. This paper presents an intercomparison study of three typical highly obscured NLS1s. By joint analysis of extinction, absorption lines, and scattered AGN radiation, properties of the nucleus (disk and broad emission line regions) are measured. Physical and geometrical conditions about circum-nucleus obscuring/scattering clouds are also estimated. In addition, the host galaxies which are usually difficult to observe in such high luminosity NLS1s are also revealed in these targets. The results show that obscuration and scattering can be powerful probes to obscured NLS1s. Analogues of these obscured NLS1s are found to widely exist. In addition, they will be followed up in our future works, so as to understand the nuclei, circum-nucleus clouds, and host galaxies of NLS1s.

中文翻译：

---

窄线赛弗1s中的模糊和散射

从正面朝大倾斜方向观察到的窄线赛弗1s（NLS1s）对于理解这一令人惊奇的AGN亚类非常重要。但是，在高度遮蔽的狩猎和研究中，进展缓慢（ $\ge \mathrm{1个}$ ）NLS1s。最近，我们发现多波长光度和偏振分析可以在识别和研究高度模糊的NLS1s中提供很大帮助。本文提出了三种典型的高度模糊NLS1的比对研究。通过对消光，吸收线和散射的AGN辐射进行联合分析，可以测量原子核的特性（圆盘和宽发射线区域）。还估计了围绕环核遮挡/散射云的物理和几何条件。此外，在这些目标中还揭示了通常很难在如此高光度的NLS1中观察到的宿主星系。结果表明，遮盖和散射可能是遮盖NLS1的有力探针。这些模糊的NLS1的类似物被发现广泛存在。此外，