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J. C. Mannello, J. F. Gallimore (Bucknell University), C. Buchanan, C. P. O'Dea, S. A. Baum, D. J. Axon, A. Robinson (R.I.T.), M. Elitzur (University of Kentucky), M. Elvis (Harvard-Smithsonian CfA)
We present 3--8 \mum photometry of 80 Seyfert galaxies selected from the extended 12 \mum sample. The data were obtained by the IRAC aboard the Spitzer Space Telescope. We employed a surface brightness modeling and decomposition algorithm to isolate the contribution of the central point source from the surrounding host galaxy. The 3--8 \mum emission is potentially dominated by the dusty medium thought to obscure the broad-line region in type 2 Seyferts. We will compare the IRAC colors of different Seyfert types and evaluate (a) current models of thermal dust emission from an obscuring torus and (b) the contribution of star-formation to the AGN luminosity on hundred-parsec scales. This research is supported by the Isaac J. Tressler fund for Astronomy at Bucknell University and by NASA through an award issued by JPL/Caltech.
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Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.