Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...377..318b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 377, Aug. 10, 1991, p. 318-329. Research supported by NSERC.
Astronomy and Astrophysics
Astrophysics
38
Abundance, Lithium, Nuclear Fusion, Solar Interior, Stellar Mass Ejection, Early Stars, Main Sequence Stars
Scientific paper
It is demonstrated that early main-sequence mass loss by the sun can solve the case of the missing solar Li. The mass loss is 0.10-0.11 solar if the ZAMS Li-7/H ratio is taken to be 1.0 x 10 to the -9th, the maximum value observed in Population I main-sequence stars. The mass loss is 0.12-0.13 solar if ZAMS Li-7/H is taken to be 2.6 x 10 to the -9th, the meteoritic value. The required amount of mass loss is nearly independent of the mass-loss time scale. A simple formula exists to estimate the amount of mass loss required by an observed Li depletion. Constant-mass models burn Li and Be at temperatures of 2.5 and 3.3 million K, respectively. Higher initial temperatures are required in mass-losing models. A prescription has been developed to estimate these temperatures as a function of initial stellar mass and initial mass-loss rate.
Boothroyd Arnold I.
Fowler William A.
Sackmann I.-Juliana
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