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Balmer line shifts in quasars

Journal
Date Issued
2016
Author(s)
Sulentic, J. W.
•
•
Del Olmo, A.
•
Zamfir, S.
DOI
Abstract
We offer a broad review of Balmer line phenomenology in type 1 active galactic nuclei, briefly summarising luminosity and radio loudness effects, and discussing interpretation in terms of nebular physics along the 4D eigenvector 1 sequence of quasars. We stress that relatively rare, peculiar Balmer line profiles (i.e., with large shifts with respect to the rest frame or double and multiple peaked) that start attracted attentions since the 1970s are still passable of multiple dynamical interpretation. More mainstream objects are still not fully understood as well, since competing dynamical models and geometries are possible. Further progress may come from inter-line comparison across the 4D Eigenvector 1 sequence.
Volume
361
Start page
55
Uri
Url
Issn Identifier
0004-640X
Ads BibCode
2016Ap&SS.361...55S
Rights
open.access
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