High angular resolution CS (J = 1-0) observations of the bipolar flow source near NGC 2071: Can the CS compact cloud collimate the flow

We have observed the CO bipolar flow source near NGC 2071 in the J = 1-0 line of carbon monosulfide with 30'' resolution provided by the new 45 m Nobeyama telescope. We find a compact cloud with a size of approx.0.3 pc x 0.15 pc embedded in an extended cloud. This compact molecular cloudd is more than 4 times smaller than ws indicated in previously published coarser resolution observations, is elongated orthogonally to the bipolar flow, and shows strong signs of rotation. However, we estimate the mass of the compact cloud to be approx.10 M/sub sun/, much less than expected if it has been focusing the flow. We therefore conclude that collimation of the flow is taking place at considerably smaller scales unresolved with the 30'' beam