SIMBAD references

2003A&A...410..937D - Astronomy and Astrophysics, volume 410, 937-942 (2003/11-2)

Observational constraints for lithium depletion before the RGB.

DE LAVERNY P., DO NASCIMENTO J.D.Jr, LEBRE A. and DE MEDEIROS J.R.

Abstract (from CDS):

Precise Li abundances are determined for 54 giant stars mostly evolving across the Hertzsprung gap. We combine these data with rotational velocity and with information related to the deepening of the convective zone of the stars to analyse their link to Li dilution in the referred spectral region. A sudden decline in Li abundance paralleling the one already established in rotation is quite clear. Following similar results for other stellar luminosity classes and spectral regions, there is no linear relation between Li abundance and rotation, in spite of the fact that most of the fast rotators present high Li content. The effects of convection in driving the Li dilution is also quite clear. Stars with high Li content are mostly those with an undeveloped convective zone, whereas stars with a developed convective zone present clear sign of Li dilution.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: evolution - stars: interiors - stars: late-type - stars: rotation

Simbad objects: 54

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2021.05.17-13:07:17

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