On the depletion of lithium in the Sun
DOI link for On the depletion of lithium in the Sun
On the depletion of lithium in the Sun book
We describe evolutionary sequences of solar models starting in a fully convective phase at the Hayashi line. An overshoot layer of ≃ 0.30 pressure scale heights is sufficient for the depletion of lithium by a factor 100. The destruction of Li occurs almost entirely during the pre-mam-sequence evolution, within a period of 1.5·107 years when the star develops a radiative core and departs from the Hayashi line. For the present Sun, the same overshoot layer leads to a convection zone of ≃ 200000 km total depth, in good agreement with the helioseismic evidence and with the needs of the solar dynamo.