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An Intrinsic Baldwin Effect in the H Beta Broad Emission Line in the Spectrum of NGC 5548We investigate the possibility of an intrinsic Baldwin effect (i.e., nonlinear emission-line response to continuum variations) in the broad HP emission line of the active galaxy NGC 5548 using crosscorrelation techniques to remove light-travel time effects from the data. We find a nonlinear relationship between the HP emission line and continuum fluxes that is in good agreement with theoretical predictions. We suggest that similar analysis of multiple lines might provide a useful diagnostic of physical conditions in the broad-line region.
Document ID
20040053309
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gilbert, Karoline M.
(Ohio State Univ. Columbus, OH, United States)
Peterson, Bradley M.
(Ohio State Univ. Columbus, OH, United States)
Date Acquired
August 21, 2013
Publication Date
April 9, 2003
Publication Information
Publication: The Astrophysical Journal
Publisher: American Astronomical Society
Volume: 587
Subject Category
Astrophysics
Funding Number(s)
CONTRACT_GRANT: NAG5-8397
Distribution Limits
Public
Copyright
Other

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