Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976pasp...88..353b&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 88, Aug. 1976, p. 353-366.
Astronomy and Astrophysics
Astronomy
79
Abundance, Light Elements, Main Sequence Stars, Stellar Evolution, Stellar Structure, Atmospheric Composition, Beryllium, Boron, Lithium, Stellar Atmospheres
Scientific paper
The present review is concerned with the stellar abundances of Li, Be, and B that are relevant to the origin of these light elements and to details of stellar structure. It is proposed that the best values for the cosmic abundances of these elements can be derived from abundance determinations in stellar atmospheres. The observed abundances are taken to indicate origins in spallation reactions involving galactic cosmic rays, with additional Li-7 probably produced during the big bang. Evidence is presented showing that the Li abundance with which stars are born is depleted during pre-main-sequence evolution, that atoms of the light elements are transported to regions within a star where they are destroyed by (p, alpha) reactions, and that many normal stars have large deficiencies of Li and Be. Overabundances and dilutions of the three elements in Ap stars, supergiants, and giants are discussed along with mechanisms that could account for both super-Li-rich stars and the great range of Li abundances in C and S stars
No associations
LandOfFree
Stellar abundances of lithium, beryllium, and boron does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Stellar abundances of lithium, beryllium, and boron, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stellar abundances of lithium, beryllium, and boron will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1873273