系综Baldwin效应的起源和物理机制
The origin and physical mechanism of the ensemble Baldwin effect
摘要:
我们对活动星系核的线-线和线-连续关联的起源和基本物理,特别是Baldwin效应进行了系统的研究。基于SDSS DR 4中Seyfert 1和类星体的均匀样本,我们发现所有发射线的起源都是爱丁顿比(L/Ledd)。基本的物理是,L/Ledd调节线发射区域中束缚的云的属性(特别是列密度)的分布。
英文摘要:
We have conducted a systematic investigation of the origin and underlying physics of the line--line and line--continuum correlations of AGNs, particularly the Baldwin effect. Based on the homogeneous sample of Seyfert 1s and QSOs in the SDSS DR4, we find the origin of all the emission-line regularities is Eddington ratio (L/Ledd). The essential physics is that L/Ledd regulates the distributions of the properties (particularly column density) of the clouds bound in the line-emitting region.
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