Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...321..156m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 321, Oct. 1, 1987, p. 156-161. NATO-supported research.
Astronomy and Astrophysics
Astrophysics
19
Asymptotic Giant Branch Stars, Magellanic Clouds, Mass To Light Ratios, Red Giant Stars, Spectrum Analysis, Stellar Evolution, Stellar Mass Ejection, Late Stars, Mira Variables, Radial Velocity
Scientific paper
Two samples of red giants in the LMC with bolometric magnitudes in the interval (-4, -8) are examined spectroscopically. These samples are deficient in luminous stars (Mbol less than -5.5) with any evidence of third dredge-up. A number of explanations are considered, of which the most likely (if standard estimates are correct for the maximum mass star that can become an AGB star) is that stars of 2-5 solar masses spend their thermal pulsing lifetime in a brief Mira phase, and that their evolution is rapidly truncated by depletion of the stellar envelope by mass loss.
Mould Jeremy
Reid Neill
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