Detailed analysis of a sample of Li-rich giants
Abstract
A detailed analysis has been carried out for a sample of 16 red giants showing a strong Li I 670.8 nm line. Ten of them were detected in a survey by Castilho et al. (1998), and the other 6 stars are Li-rich giants selected from the literature. Element abundances in the sample Li-rich giants are similar to those in normal red giants, differing only by their high Li abundance and infrared excess. This suggests that Li-rich giants may correspond to a phase of stellar evolution of normal red giants, when Li is produced and transported to the atmosphere.
- Publication:
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Astronomy and Astrophysics
- Pub Date:
- December 2000
- Bibcode:
- 2000A&A...364..674C
- Keywords:
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- STARS: LATE-TYPE;
- STARS: EVOLUTION;
- STARS: ATMOSPHERES;
- STARS: ABUNDANCES