NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 1 of 470
An Intrinsic Baldwin Effect in the H Beta Broad Emission Line in the Spectrum of NGC 5548
External Online Source: doi:10.1086/368112
Author and Affiliation:
Gilbert, Karoline M.(Ohio State Univ., Dept. of Astronomy, Columbus, OH, United States)
Peterson, Bradley M.(Ohio State Univ., Dept. of Astronomy, Columbus, OH, United States)
Abstract: We 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.
Publication Date: Apr 09, 2003
Document ID:
20040053309
(Acquired Apr 28, 2004)
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: The Astrophysical Journal; Volume 587; 123-127
Publisher Information: American Astronomical Society, United States
Contract/Grant/Task Num: NAG5-8397
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Organization Source: Ohio State Univ.; Dept. of Astronomy; Columbus, OH, United States
Description: 5p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: EMISSION SPECTRA; SEYFERT GALAXIES; H BETA LINE; CROSS CORRELATION; TIME DEPENDENCE; NONLINEARITY
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 23, 2011
Contact Us