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The Case for Two Quasar Populations

  • Jack Sulentic EMAIL logo , Paola Marziani and Sebastian Zamfir
Published/Copyright: March 23, 2017
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Open Astronomy
From the journal Open Astronomy Volume 20 Issue 3

Received: 2011-8-8
Accepted: 2011-8-15
Published Online: 2017-3-23
Published in Print: 2011-9-1

© 2017

Articles in the same Issue

  1. Photometry and Classification of Stars in the Direction of the Dark Cloud TGU 619 in Cepheus. II. Interstellar Extinction and Cloud Distance
  2. A New Dynamical Parameter for the Study of Sticky Orbits in a 3D Galactic Model
  3. Preface
  4. Scorpio On the 6m Telescope: Current State and Perspectives for Spectroscopy of Galactic and Extragalactic Objects
  5. FIR/Submm Spectroscopy with Herschel: First Results from the VNGS and H-Atlas Surveys
  6. High Redshift Quasars, Emission Lines and ‘Cloudy’
  7. Variability of Double-Peaked Emission Lines in AGNs as a Probe of the Broad-Line Region Structure
  8. Off-Axis Variability of AGNs: A New Paradigm for Broad Lines and Continuum Emitting Regions
  9. Accretion Disk Structure and Kinematics of the Broad Line Regions in Selected AGN
  10. A Photo-Ionization Method for Black Hole Mass Estimation in Quasars
  11. Microlensing-Based Studies of the Unresolved Structure of AGNs and the Composition of Lensing Galaxies
  12. The Starburst – AGN Connection: a Critical Review
  13. The Case for Two Quasar Populations
  14. Equivalent width Measurements in Optical Spectra of Galaxies in Local Clusters: Hints On the Star Formation History in Clusters
  15. Optical Emission Lines and the X-Ray Properties of Type 1 Seyfert Galaxies
  16. The Complex Broad Absorption Line Profiles in a Sample of QSO Spectra
  17. A Complex Stellar Line-of-Sight Velocity Distribution in the Lenticular Galaxy NGC 524
  18. Observations of the Galaxy NGC 3077 in the Narrow-Band [S II] and Hα Filters
  19. The Reliability of [C II] as a Star Formation Rate Indicator
  20. Influence of Black Hole Spin on the Shape of the Fe Kα Spectral Line: The Case of 3C 405
  21. Hints on the Broad Line Region Structure of Quasars at High and Low Luminosities
  22. Spectral Monitoring of AGN: Preliminary Results for Ark 564 and Arp 102B
  23. Influence of Microlensing on Spectral Anomalies of the Lensed Objects
  24. Gas Motion Mapping for Three Seyfert Galaxies
  25. AGN Dusty Tori as a Clumpy Two-Phase Medium: the 10 μm Silicate Feature
https://doi.org/10.1515/astro-2017-0314
Keywords for this article
quasars; general quasars; emission lines
Creative Commons
BY-NC-ND 4.0

Articles in the same Issue

  1. Photometry and Classification of Stars in the Direction of the Dark Cloud TGU 619 in Cepheus. II. Interstellar Extinction and Cloud Distance
  2. A New Dynamical Parameter for the Study of Sticky Orbits in a 3D Galactic Model
  3. Preface
  4. Scorpio On the 6m Telescope: Current State and Perspectives for Spectroscopy of Galactic and Extragalactic Objects
  5. FIR/Submm Spectroscopy with Herschel: First Results from the VNGS and H-Atlas Surveys
  6. High Redshift Quasars, Emission Lines and ‘Cloudy’
  7. Variability of Double-Peaked Emission Lines in AGNs as a Probe of the Broad-Line Region Structure
  8. Off-Axis Variability of AGNs: A New Paradigm for Broad Lines and Continuum Emitting Regions
  9. Accretion Disk Structure and Kinematics of the Broad Line Regions in Selected AGN
  10. A Photo-Ionization Method for Black Hole Mass Estimation in Quasars
  11. Microlensing-Based Studies of the Unresolved Structure of AGNs and the Composition of Lensing Galaxies
  12. The Starburst – AGN Connection: a Critical Review
  13. The Case for Two Quasar Populations
  14. Equivalent width Measurements in Optical Spectra of Galaxies in Local Clusters: Hints On the Star Formation History in Clusters
  15. Optical Emission Lines and the X-Ray Properties of Type 1 Seyfert Galaxies
  16. The Complex Broad Absorption Line Profiles in a Sample of QSO Spectra
  17. A Complex Stellar Line-of-Sight Velocity Distribution in the Lenticular Galaxy NGC 524
  18. Observations of the Galaxy NGC 3077 in the Narrow-Band [S II] and Hα Filters
  19. The Reliability of [C II] as a Star Formation Rate Indicator
  20. Influence of Black Hole Spin on the Shape of the Fe Kα Spectral Line: The Case of 3C 405
  21. Hints on the Broad Line Region Structure of Quasars at High and Low Luminosities
  22. Spectral Monitoring of AGN: Preliminary Results for Ark 564 and Arp 102B
  23. Influence of Microlensing on Spectral Anomalies of the Lensed Objects
  24. Gas Motion Mapping for Three Seyfert Galaxies
  25. AGN Dusty Tori as a Clumpy Two-Phase Medium: the 10 μm Silicate Feature
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