IRAS observations of southern molecular clouds

Astronomy and Astrophysics – Astronomy

Scientific paper

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Far Infrared Radiation, Interstellar Matter, Molecular Clouds, Histograms, Infrared Astronomy Satellite, Interstellar Gas

Scientific paper

A report is given of a project to use IRAS Band 3 (60 μm) and Band 4 (100 μm) observations to investigate the far-infrared properties of southern galactic molecular clouds. A method by which dust temperature and total gas column density can be estimated is presented. Results are tabulated for 65 prominent southern far-infrared sources. The dust temperatures are closely grouped between 30 and 50K, while the column densities range between 2×1020 and 1022cm-2. Maps of dust temperature and gas column density have been generated for two fields containing far-infrared sources to illustrate the effectiveness of this form of presentation.

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