Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...389..251b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 389, April 10, 1992, p. 251-268. Research supported by DOE.
Astronomy and Astrophysics
Astrophysics
19
Abundance, Big Bang Cosmology, Cosmochemistry, Galactic Evolution, Light Elements, Lithium, Nuclear Fusion, Chemical Evolution, Magellanic Clouds, Star Formation Rate, Stellar Models, Supernovae
Scientific paper
One-zone numerical models of Galactic chemical evolution of the light elements (lithium, beryllium, boron, and deuterium) with a broad sample of possible stellar lithium production sites and star formation histories, including the multiple merger model of Mathews and Schramm (1992), are examined. Models with high primordial lithium are constrained by observations of lithium and potassium in the interstellar medium of the LMC to have Li abundances close to the Population I value of about 10 exp -9. Li-7 production in intermediate- or high-mass stars (greater than 4 solar masses) is found to fit observations somewhat better than production in low-mass (1-5 solar masses) stars. Since elevated levels of lithium are commonly observed in intermediate-mass stars in the LMC, it is argued that this is indeed the major source of the Population I Li-7 abundance.
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