Cold Clouds in Cepheus Flare - Methods and Preliminary Results

Physics

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Scientific paper

We study the physical parameters of the interstellar medium in the Cepheus Flare Region. We investigated the large scale dust temperature and density distribution based on COBE DIRBE, IRAS and ISOSS data. We give optical B band extinction maps of 26 subregions covering ≍25 square degrees. We found several opaque spots on the extinction maps, examined their optical, infrared and radio properties. We selected the suspected pre-protostellar clouds in order to perform further detailed studies in the near future. Many of dense clouds we found have very low DIRBE temperature (T<15K) and former 13CO and NH3 detection. The majority of the objects seem to be starless, one third of them show ongoing star formation.

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