Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/45860
Title: Is the slope of the intrinsic Baldwin effect constant?
Authors: Goad, MR
Korista, KT
Knigge, C
First Published: 21-Jul-2004
Publisher: Oxford University Press
Citation: Monthly Notices of the Royal Astronomical Society, 2004, 352 (1), pp. 277-284
Abstract: We investigate the relationship between emission-line strength and continuum luminosity in the best-studied nearby Seyfert 1 galaxy NGC 5548. Our analysis of 13 yr of ground-based optical monitoring data reveals significant year-to-year variations in the observed Hβ emission-line response in this source. More specifically, we confirm the result of Gilbert & Peterson of a non-linear relationship between the continuum and Hβ emission-line fluxes. Furthermore, we show that the slope of this relation is not constant, but rather decreases as the continuum flux increases. Both effects are consistent with photoionization model predictions of a luminosity-dependent response in this line.
DOI Link: 10.1111/j.1365-2966.2004.07919.x
ISSN: 0035-8711
Links: http://hdl.handle.net/2381/45860
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2004, Oxford University Press. Deposited with reference to the publisher’s open access archiving policy. (http://www.rioxx.net/licenses/all-rights-reserved)
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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