Seyfert 1 Mutation of the Classical Seyfert 2 Nucleus NGC 7582
Open Access
- 10 July 1999
- journal article
- research article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 519 (2) , L123-L126
- https://doi.org/10.1086/312114
Abstract
We report the transition toward a type 1 Seyfert experienced by the classical type 2 Seyfert nucleus in NGC 7582. The transition, found at most 20 days from its maximum peak, presents a unique opportunity to study these rare events in detail. At maximum, the Hα line width is about 12,000 km s-1. We examine three scenarios that could potentially explain the transition: capture of a star by a supermassive black hole, a reddening change in the surrounding torus, and the radiative onset of a Type IIn supernova exploding in a compact nuclear/circumnuclear starburst.Keywords
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