Hostname: page-component-8448b6f56d-c47g7 Total loading time: 0 Render date: 2024-04-19T23:59:37.275Z Has data issue: false hasContentIssue false

Inconsistency of Photoionization Models for NGC 5548: Proof of Mechanical Heating?

Published online by Cambridge University Press:  12 April 2016

S. Collin-Souffrin
Affiliation:
DAEC, Observatoire de Paris, Section de Meudon, 92195 Meudon, France
A.-M. Dumont
Affiliation:
DAEC, Observatoire de Paris, Section de Meudon, 92195 Meudon, France
L. Nazarova
Affiliation:
Department of Physics & Astronomy, University of Leicester, Leicester LE1 7RH, UK

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.

It is shown that, in the case of NGC 5548, photoionization models cannot account for line fluxes, line ratios, and line variations. The assumption that a fraction of the broad-line region is mechanically heated can solve the problem.

Type
IV. Physics of the Broad-Line Region
Copyright
Copyright © Astronomical Society of the Pacific 1997

References

Clavel, J., et al. 1991, ApJ, 366, 64.CrossRefGoogle Scholar
Dietrich, M., et al. 1993, ApJ, 408, 416.Google Scholar
Marshall, H.L., et al. 1996, preprint.Google Scholar
Peterson, B.M., et al. 1991, ApJ, 368, 119.Google Scholar