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Infrared SEDs of Seyfert galaxies: Starbursts and the nature of the obscuring medium.
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posted on 2023-06-08, 08:05 authored by Jack Gallimore, David Axon, Stefi Baum, Moshe Elitzur, Martin Elvis, Christopher O'Dea, Andrew RobinsonWe present the results of IRS low-resolution spectroscopy of 51 Seyfert galaxies, part of a large Spitzer observing program to determine the mid-to-far infrared spectral energy distributions of a well-defined sample of 87 nearby, 12 mu m-selected Seyferts. We find that the spectra clearly divide into groups based on their continuum shapes and spectral features. The infrared spectral types appear to be related to the Seyfert types. Some features are clearly related to a starburst contribution to the IR spectrum, while the observed power-law continuum shapes, attributed to the AGN, may be dust or non-thermal emission. Principal component analysis results suggest that the relative contribution of starburst emission is the dominant cause of variance in the spectra. We find that the Sy 2's show on average stronger starburst contributions than the Sy 1's.
History
Publication status
- Published
Publisher
ASTRONOMICAL SOC PACIFIC, 390 ASHTON AVE, SAN FRANCISCO, CA 94112 USAPublisher URL
Volume
381Pages
6.0Presentation Type
- paper
Event name
SECOND ANNUAL SPITZER SCIENCE CENTER CONFERENCE: INFRARED DIAGNOSTICS OF GALAXY EVOLUTIONEvent location
Pasadena, CAEvent type
conferenceEvent date
November 2005.ISBN
978-1-58381-325-6Department affiliated with
- Physics and Astronomy Publications
Notes
Book Series: ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIESFull text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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