Paper:	The X-ray Effects of Starbursts in Active Galaxies
Volume:	290, Active Galactic Nuclei: from Central Engine to Host Galaxy
Page:	527
Authors:	Levenson, N. A.; Weaver, K. A.; Heckman, T. M.
Abstract:	Circumnuclear starbursts are common in Seyfert 2 galaxies, producing distinct X-ray signatures. As we demonstrate with new Chandra observations of starburst/AGN composite galaxies, stellar processes generate significant soft X-ray emission. The AGN are more important at higher energies, and they tend to be heavily obscured, by NH > 1024 cm-2. Their Fe line emission is prominent, with equivalent widths up to 9 keV, which constrains the geometry of the obscuring medium. Composite galaxies tend to have large covering fractions, an effect likely due to energy input from the starburst, which inflates the obscuring torus. Composite galaxies in general therefore present few direct lines of sight to their central engines, effectively hiding their intrinsically bright X-ray continua.

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