a main sequence for quasars

Clicks: 84
ID: 147457
2018
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Abstract
The last 25 years saw a major step forward in the analysis of optical and UV spectroscopic data of large quasar samples. Multivariate statistical approaches have led to the definition of systematic trends in observational properties that are the basis of physical and dynamical modeling of quasar structure. We discuss the empirical correlates of the so-called “main sequence” associated with the quasar Eigenvector 1, its governing physical parameters and several implications on our view of the quasar structure, as well as some luminosity effects associated with the virialized component of the line emitting regions. We also briefly discuss quasars in a segment of the main sequence that includes the strongest FeII emitters. These sources show a small dispersion around a well-defined Eddington ratio value, a property which makes them potential Eddington standard candles.
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marziani2018frontiersa Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Paola Marziani;Deborah Dultzin;Jack W. Sulentic;Ascensión Del Olmo;C. A. Negrete;Mary L. Martínez-Aldama;Mauro D'Onofrio;Edi Bon;Natasa Bon;Giovanna M. Stirpe
Journal journal of dental and allied sciences
Year 2018
DOI
10.3389/fspas.2018.00006
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