Interstellar matter in Shapley - Ames elliptical galaxies . IV . A diffusely distributed component of dust and its effect on colour gradients


We have investigated IRAS far-infrared observations of a complete, blue magnitude limited sample of 56 elliptical galaxies selected from the Revised Shapley-Ames Catalog. Data from a homogeneous optical CCD imaging survey as well as published X-ray data from the EINSTEIN satellite are used to constrain the infrared data. Dust masses as determined from the… (More)


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