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Millimeter Observations of Molecules in the Envelopes around Late-type Stars
Published online by Cambridge University Press: 25 May 2016
Abstract
The envelopes surrounding AGB stars are similar to interstellar dark clouds in many respects; opaque to the visible light, they are transparent to mm wavelengths. Several envelopes, close enough to be spatially resolved with mm-wave interferometers, exhibit a remarkably rich molecular content, which can then be studied in detail as a function of radius. Because the envelopes are in expansion, their outer layers are older and more evolved than the inner ones, making it possible, thanks to a relatively simple geometry, to probe the time-dependence of the ongoing chemical processes.
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- Part 6. Chemistry in the Envelopes of Late-Type Stars
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- Copyright © Astronomical Society of the Pacific 2000
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