The outer rotation curve project with VERA: Trigonometric parallax of
  IRAS 05168+3634
  We present a measurement of the trigonometric parallax of IRAS 05168+3634
with VERA. The parallax is 0.532 +/- 0.053 mas, corresponding to a distance of
1.88 +0.21/-0.17 kpc. This is significantly closer than the previous distance
estimate of 6 kpc based on a kinematic distance measurement. This drastic
change in the source distance implies the need for revised values of not only
the physical parameters of IRAS 05168+3634, but it also implies a different
location in the Galaxy, placing it in the Perseus arm rather than the Outer
arm. We also measured the proper motion of the source. A combination of the
distance and proper motion with the systemic velocity yields a rotation
velocity {\Theta} = 227 +9/-11 km s^-1 at the source position, assuming
{\Theta}_0 = 240 km s^-1. Our result, combined with previous VLBI results for
six sources in the Perseus arm, indicates that the sources rotate
systematically more slowly than the Galactic rotation velocity at the local
standard of rest. In fact, we derive peculiar motions in the disk averaged over
the seven sources in the Perseus arm of (U_mean, V_mean) = (11 +/- 3, -17 +/-
3) km s^-1, which indicates that these seven sources are moving systematically
toward the Galactic Center and lag behind the overall Galactic rotation.
