Sub-arcsecond Kinematic Structure of the Outflow in the Vicinity of the
  Protostar in L483
  The bipolar outflow associated with the Class 0 low-mass protostellar source
(IRAS 18148-0440) in L483 has been studied in the CCH and CS line emission at
245 and 262 GHz, respectively. Sub-arcsecond resolution observations of these
lines have been conducted with ALMA. Structures and kinematics of the outflow
cavity wall are investigated in the CS line, and are analyzed by using a
parabolic model of an outflow. We constrain the inclination angle of the
outflow to be from 75 degree to 90 degree, i.e. the outflow is blowing almost
perpendicular to the line of sight. Comparing the outflow parameters derived
from the model analysis with those of other sources, we confirm that the
opening angle of the outflow and the gas velocity on its cavity wall correlate
with the dynamical timescale of the outflows. Moreover, a hint of a rotating
motion of the outflow cavity wall is found. Although the rotation motion is
marginal, the specific angular momentum of the gas on the outflow cavity wall
is evaluated to be comparable to or twice that of the infalling-rotating
envelope of L483.
