The neutral carbon distribution in a bipolar outflow/molecular disc source configuration: G35.2−0.74N |
| |
| Authors: | Little Kelly & Murphy |
| |
| Institution: | Electronic Engineering Laboratory, University of Kent at Canterbury, CT2 7NT |
| |
| Abstract: | Maps are presented of 3 P 1→3 P 0C i ] and J =2→1 C18O line emission from the interstellar molecular cloud G35.2?0.74N. The maps are interpreted with reference to a previous model for the structure of the cloud in which opposing jets from a central object, embedded in a rotating interstellar disc, precess and drive a bipolar molecular outflow. The C18O emission traces the rotating interstellar disc, but the C i ] emission shows several features. An unresolved component is observed which probably results from dissociation of CO in the centre of the disc by UV radiation from the central source. Background C i ] emission is also observed which shares the rotation of the disc on larger scales. The C i /CO ratio in these components is typically a few per cent. High-velocity C i ] emission, where C i /CO is high (>0.1–0.4), is observed between the CO molecular outflow and the cavity exacavated by the jet. This material has probably been accelerated by the jet but dissociated by far-UV radiation propagating through the cavity. The C i /CO ratio falls as the shocked outflow later sweeps up CO. |
| |
| Keywords: | ISM: abundances ISM: clouds ISM: individual: G35?0 74N ISM: jets and outflows |
|
|
