Abstract
Results of HC 3 N observations of 15 dense molecular cloud cores, associated with bright IRAS sources in the outer Galaxy, are reported. HC 3 N column densities and emission region sizes have been calculated. The J =10-9 line analysis have been performed, along with the J =12-11 and J =5-4 data in the framework of the microturbulent isothermal model. The logarithms of densities found for 4 objects lie in the range: 5.5-5.9 being ∼(0.5-1) orders of magnitude higher than mean densities. Possible models for these objects should incorporate inhomogeneous density structure.
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