Late-time spectroscopy of SN 2002hh: A continued visible light echo with
  no shock interaction yet
  Supernova (SN) 2002hh was unusual among core-collapse SNe because it was
highly reddened, and displayed a bright infrared (IR) excess due to radiatively
heated dust in its circumstellar medium (CSM). Estimates for the mass of dust
responsible for the IR echo suggested the presence of a massive shell within
0.26 pc of the star. For a velocity of 5000 - 10000 km/s, this material should
be hit by the SN blast wave at late times, starting at roughly 12 years
post-explosion. We have obtained deep late-time spectra with the MMT Blue
Channel spectrograph to search for any spectral signatures of ongoing shock
interaction. Interaction with a strength comparable to SN 1987A's collision
with the equatorial ring would be detected in our data. However, in the spectra
reported here, we do not detect clear signs of strong CSM interaction, contrary
to expectations based on the reported radii of the dust shell. We do, however,
detect emission associated with the old SN, and we find that the broad lines in
the spectrum indicate a continuation of an ongoing reflected light echo, which
appears similar to the spectrum at peak luminosity for this Type II-P event.
