Possible 5-14 μm Spectral Variation in the Seyfert 1 Fairall 9

Details Possible 5-14 μm Spectral Variation in the Seyfert 1 Fairall 9 Possible 5-14 μm Spectral Variation in the Seyfert 1 Fairall 9

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21460310g&link_type=abstract

American Astronomical Society, AAS Meeting #214, #603.10

Astronomy and Astrophysics

Astronomy

Scientific paper

We present three epochs of low resolution, 5-14 μm spectra and 24um photometry of the Seyfert 1 galaxy Fairall 9 obtained by the Spitzer Space Telescope. Fairall 9 has shown itself to be variable in multiple previous monitoring surveys and was the first to show definitive evidence of dust reverberation. The first two Spitzer epochs, 12/2003 and 6/2007, show a distinct change in slope between 5 and 14 μm. There is no change between the second and third epochs, 6/2007 and 1/2009. Photometry was performed at 24um for all three epochs but showed no change among the three epochs so any variation is constrained to shorter wavelengths.

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