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A Main Sequence For Quasars

Date Issued
2016
Author(s)
•
Sulentic, J. W.
•
Dultzin, D.
•
Negrete, A.
•
del Olmo, A.
•
Martínez-Carballo, M. A.
•
•
D'Onofrio, M.
•
Perea, J.
DOI
Abstract
The 4D eigenvector 1 parameter space defined by Sulentic et al. may be seen as a surrogate H-R diagram for quasars. As in the stellar H-R diagram, a source sequence can be easily identified. In the case of quasars, the main sequence appears to be mainly driven by Eddington ratio. A transition Eddington ratio may in part explain the striking observational differences between quasars at opposite ends of the main sequence. The eigenvector-1 approach opens the door towards properly contextualized models of quasar physics, geometry and kinematics. We review some of the progress that has been made over the past 15 years, and point out still unsolved issues.
Coverage
Active Galactic Nuclei 12: A Multi-Messenger Perspective (AGN12)
Start page
42
Conferenece
Active Galactic Nuclei 12: A Multi-Messenger Perspective (AGN12)
Conferenece place
Napoli, Italy
Conferenece date
26-29 settembre, 2016
Uri
Url
Ads BibCode
2016agnt.confE..42M
Rights
open.access
File(s)
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Thumbnail Image
Name

agn12_marziani_talk.pdf

Description
Talk
Size

2.93 MB

Format

Adobe PDF

Checksum (MD5)

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