Hostname: page-component-7479d7b7d-jwnkl Total loading time: 0 Render date: 2024-07-13T13:23:01.537Z Has data issue: false hasContentIssue false
  • English
  • Français

A New Luminosity Effect in QSO Spectra

Published online by Cambridge University Press:  12 April 2016

Michael R. Corbin  and
Todd A. Boroson
Michael R. Corbin
Affiliation:
Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
Todd A. Boroson
Affiliation:
U.S. Gemini Program, National Optical Astronomy Observatories, P.O. Box 26732, Tucson, AZ 85726, USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Comparison of the emission-line and continuum parameters of 48 low-redshift QSOs reveals the asymmetry of the C IV λ1549 broad emission line to be strongly correlated with ultraviolet continuum luminosity, such that increasing luminosity produces increasing redward asymmetry. A similar correlation has been found for broad Hβ. Redward profile asymmetries can be modeled as the result of the gravitational redshift of line photons from the very broad-line region (VBLR) by 109–1010M⊙ black holes, but blueward profile asymmetries require a competing effect such as electron scattering.

Type
V. Emission Lines, Absorption Lines, the Continuum, and their Relationships
Information
International Astronomical Union Colloquium , Volume 159: Emission Lines in Active Galaxies: New Methods and Techniques , 1997 , pp. 260 - 261
Copyright
Copyright © Astronomical Society of the Pacific 1997

References

Boroson, T.A., & Green, R.F. 1992, ApJS, 80, 109.Google Scholar
Brotherton, M.S., Wills, B.J., Francis, P.J., & Steidel, C.C. 1994, ApJ, 430, 495.Google Scholar
Corbin, M.R. 1993 ApJ, 403, L9.CrossRefGoogle Scholar
Corbin, M.R. 1995, ApJ, 447, 496.Google Scholar
Ferrara, A., & Pietrini, P. 1993, ApJ, 405, 130.CrossRefGoogle Scholar
Kallman, T.R., & Krolik, J.H. 1986, ApJ, 308, 805.Google Scholar
Koratkar, A.P., & Gaskell, C.M. 1991, ApJ, 370, L61.Google Scholar
Popovic, L.C., Vince, I., Atanackovic-Vukmanovic, O., & Kubicela, A. 1995, A&A, 293, 309.Google Scholar