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Consistency of spherical, gravity-dominated dynamics with quasar high-ionization emission-line profilesLine profile data are used to test a simple kinematic model - spherically symmetric gravitational free fall - in which the number of free parameters is limited by requiring physical self-consistency. The predictions of this model are fitted to high-resolution spectra of the stronger rest-frame UV emission lines in 12 quasars with z of about 2. It is found that if all the lines are radiated predominantly from the illuminated faces of the emission-line clouds, the profiles of Ly-alpha, N V 1240 A, and C IV 1549 A can be simultaneously well fitted with very similar parameters for all 12 quasars. It is concluded that spherically symmetric gravitational free fall does not correctly describe the dynamics of quasar broad emission-line regions.
Document ID
19930039960
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Kallman, T. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wilkes, B. J.
(Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Krolik, J. H.
(Johns Hopkins Univ. Baltimore, MD, United States)
Green, Richard
(Kitt Peak National Observatory Tucson, AZ, United States)
Date Acquired
August 16, 2013
Publication Date
January 20, 1993
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 403
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A23957
Distribution Limits
Public
Copyright
Other

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