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The Host Galaxies of Narrow-Line Seyfert 1s: Evidence for Bar-Driven Fueling

D. M. Crenshaw·S. B. Kraemer·J. R. Gabel
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Abstract

We present a study of the host-galaxy morphologies of narrow- and broad-line Seyfert 1 galaxies (NLS1s and BLS1s) based on broad-band optical images from the Hubble Space Telescope archives. We find that large-scale stellar bars, starting at ~1 kpc from the nucleus, are much more common in NLS1s than BLS1s. Furthermore, the fraction of NLS1 spirals that have bars increases with decreasing full-width at half-maximum (FWHM) of the broad component of H-beta. These results suggest a link between the large-scale bars, which can support high fueling rates to the inner kpc, and the high mass-accretion rates associated with the supermassive black holes in NLS1s.

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D. M. Crenshaw, S. B. Kraemer, J. R. Gabel. 2003-06-19. The Host Galaxies of Narrow-Line Seyfert 1s: Evidence for Bar-Driven Fueling. https://doi.org/10.1086/377625

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