Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...351...31m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 351, March 1, 1990, p. 31-37. Research supported by SERC.
Astronomy and Astrophysics
Astrophysics
10
Abundance, Interstellar Matter, Lithium, Supernova 1987A, Universe, Astronomical Spectroscopy, Big Bang Cosmology, Chemical Evolution, Interstellar Chemistry, Stellar Spectra
Scientific paper
High-resolution spectroscopic data are presented for the 6708 A Li I region toward SN 1987A. Although no positive detection of any Li I feature is reported, an attempt is made to derive an upper limit to the primordial Li abundance from the derived upper limit of the Li I equivalent width. It is shown how such a procedure is beset by large uncertainties in the understanding of the depletion processes in the interstellar medium, and that the error on the upper limit to the primordial lithium abundance determined by this method is likely to be significantly larger than previously reported. An upper limit is derived to the primordial Li/H ratio of 4.4 X 10 to the -9th. The consequences of the results for standard and nonstandard big bang cosmologies are discussed.
Alcock Charles R.
Malaney Robert A.
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