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Possible sources of the Population I lithium abundance and light-element evolutionOne-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.
Document ID
19920050445
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Brown, Lawrence E.
(NASAFermilab Astrophysics Center Batavia; Chicago, University, IL, United States)
Date Acquired
August 15, 2013
Publication Date
April 10, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 389
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
92A33069
Funding Number(s)
CONTRACT_GRANT: NAGW-1340
CONTRACT_GRANT: NAGW-1321
Distribution Limits
Public
Copyright
Other

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