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Structure and kinematics of the broad-line regions in active galaxies from IUE variability dataIUE archival data are used here to investigate the structure nad kinematics of the broad-line regions (BLRs) in nine AGN. It is found that the centroid of the line-continuum cross-correlation functions (CCFs) can be determined with reasonable reliability. The errors in BLR size estimates from CCFs for irregularly sampled light curves are fairly well understood. BLRs are found to have small luminosity-weighted radii, and lines of high ionization tend to be emitted closer to the central source than lines of low ionization, especially for low-luminosity objects. The motion of the gas is gravity-dominated with both pure inflow and pure outflow of high-velocity gas being excluded at a high confidence level for certain geometries.
Document ID
19910043270
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Koratkar, Anuradha P.
(Space Telescope Science Institute Baltimore, MD, United States)
Gaskell, C. Martin
(Michigan, University Ann Arbor, United States)
Date Acquired
August 14, 2013
Publication Date
March 1, 1991
Publication Information
Publication: Astrophysical Journal Supplement Series
Volume: 75
ISSN: 0067-0049
Subject Category
Astrophysics
Accession Number
91A27893
Funding Number(s)
CONTRACT_GRANT: NAG5-1199
Distribution Limits
Public
Copyright
Other

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