Lithium and beryllium depletions in low main sequence stars

Details Lithium and beryllium depletions in low main sequence stars Lithium and beryllium depletions in low main sequence stars

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007acasn..48..165x&link_type=abstract

Acta Astronomica Sinica, vol. 48, no. 2, p. 165-180

Astronomy and Astrophysics

Astronomy

Physical Data And Processes: Convection, Stars: Abundance, Stars: Late Type, Stars: Evolution, Galaxy: Open Clusters And Associations

Scientific paper

Using a non-local stellar convection theory for chemically inhomogeneous stars, the depletions of Lithium and Beryllium in the main-sequence models of 0.7-1.15Msun are calculated. The comparison between the calculated and the observed values of depletions in open clusters with different ages is made. The results show that the general properties of Lithium depletions among the late type main-sequence stars with T eff<6400K can be reproduced by convective overshooting mixing process. It is concluded that convective overshooting could be an important mechanism for Lithium depletions observed in late type dwarfs.

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