Skip to main content

Signs of flows and shocks in variable Balmer line profiles of the Seyfert galaxies NGC 3227 and NGC 7469

Buy Article:

$60.90 plus tax (Refund Policy)


There is a widely held opinion that the narrow components of the emission line profiles in the spectra of AGNs are produced by gas streams and flows. The spectral data obtained and collected for the Seyfert galaxies NGC 3227 and NGC 7469 showed that the profiles of the Balmer lines contain components that maintained their positions over 9-25 years. We suppose that the components can be caused by long-lived flows or jets in broad-line regions. Night-to-night variations in the emission line Hβ and Hγ profiles over 3 days were detected. We suppose that short-term variability of the Balmer lines can be produced in short-lived shocks in gas flows or jets.

Keywords: Active nuclei; NGC 3227; NGC 7469; Optical variability; Seyfert galaxies

Document Type: Research Article


Affiliations: 1: Crimean Astrophysical Observatory Nauchny Crimea Ukraine 2: Isaac Newton Institute of Chile Crimean Branch Crimea Ukraine

Publication date: August 1, 2003

More about this publication?

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more