The Cobwebs of Ophiuchus. II. 13CO Filament Kinematics

The molecular kinematics in the Rho Ophiuchi complex are examined. Streaming motions in the form of V(LSR) gradients along filament axes, as predicted for a shocked cloud model, are found only in a short warm filament associated with L1689N, but are not found in the three longest filaments. They have, instead, either approximately uniform V(LSR) or abrupt jumps in V(LSR) between adjacent lumps. A small fraction of clumps are rotating. About evenly divided between senses of rotation, most of these clumps share a common axial alignment paralleling the ambient magnetic field. Within most individual clumps the V(LRSR) is constant within 0.1-0.2 km/s. There is no correlation between the turbulent velocity dispersion in a clump and the clump size or mass. A distinction in turbulent sigma is found between clumps with embedded stars and those without.