Far-infrared circumstellar 'debris' shell of red supergiant stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Far Infrared Radiation, Red Giant Stars, Stellar Envelopes, Supergiant Stars, Infrared Astronomy Satellite, Interstellar Matter, Star Clusters, Stellar Models

Scientific paper

An examination of IRAS data of red supergiant stars in the field and in galactic OB star associations indicates the presence of substantial amounts of 60 μm emitting material extending several arcminutes around many such sources. The characteristics of these large shells are discussed in terms of remnants of ongoing mass loss, and a simple model developed for the case of α Orionis, in particular.

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