The formation of broad emission line regions in supernova-QSO wind interactions

Pittard, J.M., Dyson, J.E., Falle, S.A.E.G. and Hartquist, T.W. (2001) The formation of broad emission line regions in supernova-QSO wind interactions. Astronomy and Astrophysics, 375 (3). pp. 827-839. ISSN 0004-6361

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Abstract

We show that a cooled region of shocked supernova ejecta forms in a type II supernova-QSO wind interaction, and has a density, an ionization parameter, and a column density compatible with those inferred for the high ionization component of the broad emission line regions in QSOs. The calculations are based on the assumption that the ejecta flow is described initially by a similarity solution investigated by Chevalier (1982) and Nadyozhin (1985) and is spherically symmetric. Heating and cooling appropriate for gas irradiated by a nearby powerful continuum source is included in our model, together with reasonable assumptions for the properties of the QSO wind. The model results are also in agreement with observational correlations and imply reasonable supernova rates.

Item Type:	Article
Copyright, Publisher and Additional Information:	© ESO 2001
Keywords:	hydrodynamics, shock waves, stars, mass-loss, ISM, bubbles, active galaxies
Academic Units:	The University of Leeds > Faculty of Maths and Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) The University of Leeds > Faculty of Maths and Physical Sciences (Leeds) > School of Mathematics (Leeds) > Applied Mathematics (Leeds)
Depositing User:	Repository Assistant
Date Deposited:	02 Jun 2006
Last Modified:	08 Feb 2013 17:02
Published Version:	http://dx.doi.org/10.1051/0004-6361:20010906
Status:	Published
Publisher:	EDP Sciences
Refereed:	Yes
Identification Number:	10.1051/0004-6361:20010906
URI:	http://eprints.whiterose.ac.uk/id/eprint/1254

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