Lithium depletion during the contraction phase of the sun

Details Lithium depletion during the contraction phase of the sun Lithium depletion during the contraction phase of the sun

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...146..384k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 146, no. 2, May 1985, p. 384-386. Research supported by the Scientific and Tec

Physics

3

Abundance, Convective Flow, Lithium, Solar Physics, Stellar Evolution, Beryllium, Boron, Depletion, Surface Layers

Scientific paper

It has been shown that convective overshooting, which can extend the mixing region of the sun in proportion to the depth of the convective zone during evolution, can explain the observed depletion of lithium in the surface layers of the sun. Solar model calculations obtained the desired amount of Li depletion when the mixing depth was taken to be 0.197 times the radial depth of the convective zone during the pre-main sequence phase of evolution. However, it can be inferred from Li observations that strong evershooting does not exist in stars from 100 million to a billion years old.

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