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A 5.5–35 μm Spectral Analysis of Active Galactic Nuclei

Published online by Cambridge University Press:  03 June 2010

D. A. Sales ,
M. G. Pastoriza  and
R. Riffel
D. A. Sales
Affiliation:
Universidade Federal do Rio Grande do Sul, Av. Bento Goncalves 9500 Caixa Postal 15051, 91501-970 Porto Alegre RS, Brazil Email: [email protected], [email protected], [email protected]
M. G. Pastoriza
Affiliation:
Universidade Federal do Rio Grande do Sul, Av. Bento Goncalves 9500 Caixa Postal 15051, 91501-970 Porto Alegre RS, Brazil Email: [email protected], [email protected], [email protected]
R. Riffel
Affiliation:
Universidade Federal do Rio Grande do Sul, Av. Bento Goncalves 9500 Caixa Postal 15051, 91501-970 Porto Alegre RS, Brazil Email: [email protected], [email protected], [email protected]
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The spectroscopic properties of a sample of nine Seyfert 1, six NLS1, 26 Seyfert 2, and three starburst galaxies have been studied at mid-infrared wavelengths in order to determine if the frequency of detection of the brightest emission lines and the continuum shape are correlated with the degree of activity. The raw data were obtained from the Spitzer Infrared Spectrograph (IRS) archive and reduced with the pipeline (version 17.2). The spectra of the galaxies were grouped by type of activity. We conclude through this study that in general the continuum shape of the active galactic nuclei (AGN) is flat between 5 μm and 12 μm, and strong variations are found at longer wavelengths in this sample.

Keywords

galaxies: Seyfertgalaxies: starburstinfrared: spectroscopy
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S267: Co-Evolution of Central Black Holes and Galaxies , August 2009 , pp. 137
Copyright
Copyright © International Astronomical Union 2010