Astronomy and Astrophysics – Astrophysics
Scientific paper
1996-09-05
Astronomy and Astrophysics
Astrophysics
AAS Latex and Postcript Figures, accepted for publication in ApJ
Scientific paper
10.1086/304054
We report on the discovery of a boxy/peanut shaped bulge in the highly inclined barred Seyfert 2 galaxy NGC~7582. The peanut shape is clearly evident in near infrared $JHK$ images but obscured by extinction from dust in visible $BVR$ images. This suggests that near infrared imaging surveys will discover a larger number of boxy/peanut morphologies than visible surveys, particularly in galaxies with heavy extinction such as NGC~7582. The bulge in NGC~7582 exhibits strong boxiness compared to other boxy/peanut shaped bulges. If the starburst was mediated by the bar, then it is likely that the bar formed in less than a few bar rotation periods or a few $\times 10^8$ years ago. If the bar also caused the peanut, then the peanut would have formed quickly; on a timescale of a few bar rotation periods.
DePoy Darren L.
Frogel Jay. A.
Kuchinski Leslie E.
Quillen Alice. C.
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