Morphology of Seyfert Galaxies
  We probed the relation between properties of Seyfert nuclei and morphology of
their host galaxies. We selected Seyfert galaxies from the Sloan Digital Sky
Survey with redshifts less 0.2 identified by the V\'{e}ron Catalog (13th). We
used the "{\it{FracDev}}" parameter from SDSS galaxy fitting models to
represent the bulge fractions of the Seyfert host galaxies. We found that the
host galaxies of Seyfert 1 and Seyfert 2 are dominated by large bulge
fractions, and Seyfert 2 galaxies are more likely to be located in disk
galaxies whereas most of the Seyfert 1 galaxies are located in bulge-dominant
galaxies. These results indicate that the types of AGNs are related to their
host galaxies and can not be explained by the traditional unification model of
Seyfert galaxies.
