Title: Asymmetric emission of the [OIII]$λ$5007 profile in narrow-line Seyfert 1 galaxies Show Chinese title

Title: 窄线赛弗特1型星系中[OIII]$λ$5007谱的非对称发射

Abstract: Many active galactic nuclei (AGN) and particularly narrow-line Seyfert 1 (NLS1) galaxies, usually exhibit blueshifts and blue wings in several emission lines, which are mainly associated with outflows and strong winds. In order to study the radial velocity difference between the narrow component of H$\beta$ and the core component of [OIII]$\lambda$5007 and the asymmetric emission of this forbidden line, we investigate a sample of NLS1 galaxies . One of the aims of this paper is to analyze the blue wings of the [OIII]$\lambda$5007 profiles and their relation with the central engine. We have obtained and studied medium-resolution spectra (190 km s$^{-1}$ FWHM at H$\beta$) of a sample of 28 NLS1 galaxies in the optical range 4300 - 5200\AA. We performed Gaussian decomposition to the H$\beta$ and [OIII]$\lambda\lambda$4959,5007 emission profiles in order to study the distinct components of these lines. A new blue outlier galaxy is found, in which the center of the core component of [OIII] is blueshifted by 405 km s$^{-1}$ relative to the center of the narrow component of H$\beta$ line. We confirmed a previously known correlation between the blueshift and the full width half maximum (FWHM) of the core component of [OIII]$\lambda$5007 line. We also corroborated the correlation between the latter and the velocity of the centroid of the blue wing. On the other hand, by studying the radial velocity difference between the blue end of the asymmetric emission and the centroid of the core component of [OIII], we found a correlation between it and the central black hole mass and, therefore, with the luminosity of the broad component of H$\beta$. Finally, we found a moderate correlation between the luminosity of the [OIII] blue wing and the black hole mass. Show Chinese abstract

Abstract: 许多活动星系核（AGN），特别是窄线赛弗特1型（NLS1）星系，通常在一些发射线中表现出蓝移和蓝翼，这些现象主要与外流和强风有关。为了研究H$\beta$的窄成分和[OIII]$\lambda$5007的核心成分之间的径向速度差异以及该禁戒线的不对称发射，我们研究了一组NLS1星系样本。本文的一个目的是分析[OIII]$\lambda$5007轮廓的蓝翼及其与中心引擎的关系。我们获得了并研究了28个NLS1星系在光学波段4300 - 5200\AA 范围内的中等分辨率光谱（在H$\beta$处FWHM为190 km s$^{-1}$）。 我们对H$\beta$和 [OIII]$\lambda\lambda$4959,5007 发射谱线进行了高斯分解，以研究这些谱线的不同成分。 发现了一个新的蓝移异常星系，在该星系中，[OIII]核组分的中心相对于H$\beta$线窄组分的中心蓝移了405 km s$^{-1}$。 我们证实了之前已知的[OIII]$\lambda$5007 核心组分蓝移与半高全宽（FWHM）之间的相关性。 我们还验证了后者的速度与蓝翼质心速度之间的相关性。 另一方面，通过研究不对称发射的蓝端与[OIII]核组分质心之间的径向速度差，我们发现了它与中心黑洞质量以及因此与H$\beta$宽组分亮度之间的相关性。 最后，我们发现[OIII]蓝翼亮度与黑洞质量之间存在适度的相关性。