Friday, 27 February, 1998 at 2:30pm

Robin Phillips - Univ. of Kent

"2-D radiative transfer modelling of star formation regions"

ABSTRACT:"Most non-LTE modelling of star formation regions done thus far has assumed 1-D spherical symmetry in order to keep the run times down to a managable length. However, computers are now fast enough to be able to handle the additional complexity of 2-D models in a reasonable time. We have therefore written a 2-D lambda-iteration routine which will model disks, filaments and outflows (or any other object that can be described by a series of stacked concentric rings) and enables the description of 3-D motion within the cloud (ie. infall/outflow in 2 directions and rotation - not necessarily as a solid body). It is capable of working with any molecule for which there are collision rates available."