Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pabei..17..317j&link_type=abstract
Prog. Astron., Vol. 17, No. 4, p. 317 - 323
Astronomy and Astrophysics
Astronomy
Agb Stars: Circumstellar Shells, Agb Stars: Infrared Radiation, Space Missions: Infrared Astronomy
Scientific paper
This paper reports the progress on the ISO (Infrared Space Observatory) project and emphasizes its influence on the study of AGB stars. Because AGB stars lose mass in a large scale and become mostly optically thick, infrared observations can be used to exhibit the gas/dust components of the circumstellar envelopes. Furthermore, the circumstellar envelope of AGB stars is a very important source for the evolution of the interstellar medium, and a clear understanding of the AGB stars' circumstellar envelope will help investigate the evolution of cosmic abundances. Though this space infrared observatory finished its mission just in May 1998, already some useful results have been published. Detached shell structure of AGB stars seen from ISO photo-imaging implies a non-continuous mass loss process.
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