The host galaxies of narrow-line Seyfert 1 galaxies: Evidence for bar-driven fueling

D. M. Crenshaw, S. B. Kraemer, Jack Gabel

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We present a study of the host galaxy morphologies of narrow- and broad-line Seyfert 1 galaxies (NLS1's and BLS1's) based on broadband 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 NLS1's than BLS1's. Furthermore, the fraction of NLS1 spirals that have bars increases with decreasing full width at half-maximum 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 kiloparsecs, and the high mass accretion rates associated with the supermassive black holes in NLS1's.

Original languageEnglish
Pages (from-to)1690-1698
Number of pages9
JournalAstronomical Journal
Issue number4 1774
Publication statusPublished - Oct 2003
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Astronomy and Astrophysics

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