Reddening and He I* $\lambda10830$ Absorption Lines in Three Narrow-line
  Seyfert 1 Galaxies
  We report the detection of heavy reddening and the He I* $\lambda10830$
absorption lines at the AGNs' redshift in three Narrow-line Seyfert 1 galaxies:
SDSS J091848.61+211717.0, SDSS J111354.66+124439.0, and SDSS
J122749.13+321458.9. They exhibit very red optical to near-infrared colors,
narrow Balmer/Paschen broad emission lines and He I* $\lambda10830$ absorption
lines. The ultraviolet-optical-infrared nucleus continua are reddened by the
SMC extinction law of $E(B-V)\sim 0.74$, 1.17, and 1.24 mag for three objects,
which are highly consistent with the values obtained from the broad-line Balmer
decrements, but larger than those of narrow emission lines. The reddening
analysis suggests the extinction dust simultaneously obscure the accretion
disk, the broad emission line region, and the hot dust from the inner edge of
the torus. It is possible that the dust obscuring the AGN structures are the
dusty torus itself. Furthermore, the Cloudy analysis of the He I*
$\lambda10830$ absorption lines propose the distance of the absorption
materials to be the extend scale of the torus. That greatly increases
probabilities of the obscure and absorption materials being the dusty torus.
