The Host Galaxies of Narrow-Line Seyfert 1s: Evidence for Bar-Driven Fueling
نویسندگان
چکیده
We present a study of the host-galaxy morphologies of narrowand broadline 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 Hβ. 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. Subject headings: galaxies: Seyfert
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