Type 1 AGN at low z. II.

We explore the relative strength of the narrow emission lines in a Sloan Digital Sky Survey based sample of broad H{alpha} selected active galactic nuclei (AGN), defined in...我们针对基于斯隆数字巡天（Sloan Digital Sky Survey）构建的宽Hα筛选活动星系核（active galactic nuclei，AGN）样本，探究了其中窄发射线的相对强度，该样本的定义方式详见……