Hostname: page-component-5cf477f64f-tx7qf Total loading time: 0 Render date: 2025-04-06T00:11:47.909Z Has data issue: false hasContentIssue false
  • English
  • Français

The Cosmic Evolution of Quasars at High Redshifts

Published online by Cambridge University Press:  19 July 2016

P. Véron
P. Véron*
Affiliation:
Observatoire de Haute-Provence, 04870 Saint Michel l'Observatoire, France

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.

The analysis of all published slitless quasar surveys suggests that the space density of quasars increases quickly with redshift up to z ∼ 2.45, then drops abruptly by about a factor of five, increases again up to z ∼ 3.8 at least to drop once more below the present day limit of sensitivity.

Type
Chapter XI: Quasi-Stellar Objects: Distribution and General Properties
Information
Symposium - International Astronomical Union , Volume 124: Observational Cosmology , 1987 , pp. 639 - 641
Copyright
Copyright © Reidel 1987 

References

Osmer, P.S. 1982, Astrophys. J. 253, 28.Google Scholar
Schmidt, M., Schneider, D.P. and Gunn, J.E. 1986, Astrophys. J. 306, 411.Google Scholar
Véron, P. 1983, in “Proceedings of the 24th Liege International Astrophysical Colloquium”, Institut d'Astrophysique de Liège, p. 210.Google Scholar
Weedman, D.W. 1985, Astrophys. J. Suppl. Ser. 57, 323.Google Scholar