Astronomy and Astrophysics – Astronomy
Scientific paper
May 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984s%26w....23..243e&link_type=abstract
Sterne und Weltraum (ISSN 0039-1263), vol. 23, May 1984, p. 243-245. In German.
Astronomy and Astrophysics
Astronomy
Hydroxyl Emission, Infrared Stars, Radio Sources (Astronomy), Stellar Evolution, Infrared Photometry, Mira Variables, Planetary Nebulae, Stellar Mass Ejection, Stellar Spectrophotometry, Supergiant Stars, Variable Stars
Scientific paper
The results of observational studies of OH/IR stars are discussed. The periods and mass loss of these stars and their identity as either Mira variables or M-supergiants are considered. The results suggest that all stars up to 8-10 solar masses will pass through a Mira variable stage at some time during their evolution. Massive stars in that stage have higher luminosities and longer periods. Their high mass loss rates create an optically thick shell; in the end, these stars are visible only as planetary nebulae. Stellar development on the symptotic giant branch and infrared photometry are also discussed.
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