The origin and physical mechanism of the ensemble Baldwin effect

2009/03/04 by Xiao-Bo Dong, Xiaobo Dong, Dong, Xiaobo +14 · 1 citation
Chemistry · Engineering · Physics and Astronomy · #Astrophysics of Galaxies (astro-ph.GA) #Atomic and Molecular Physics #FOS: Physical sciences #Laser-induced spectroscopy and plasma #Spectroscopy and Laser Applications #astro-ph.GA

paper · pdf · doi:10.48550/arxiv.0903.0698

to appear in the proceedings of "The Starburst-AGN Connection Conference",ASP Conference Series. Ver2: An appendix of ``Not Baldwin Effect, but ell Effect?'' is added, with two more figures to unveil the nature of the Baldwin effect of AGNs

openalex publication_date 2009/03/04 · arxiv created 2009/03/29 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

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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