Dependency analysis of stellar Li depletion in the presence of planets.

LLORENTE DE ANDRÉS, F.; DE LA REZA, R.; CHAVERO, C.;

Salamanca

Conferencia; XIII Reunión Científica - SEA; 2018

Sociedad Española de Astronomía

The initial base of the present paper was the remarkably, and well known, trend of Li abundance with age. In such a trend, one could perceive a slope rupture in the relationship Li abundance / age. That break of slope seems to be a clear hollow that manifested itself when the stars host planets because it is not showed when the stars do not host planets. The objective of the present poster (part of an extended work; see references) is to seek a plausible physical explanation of the change of slope and which kind of mechanisms are acting to accelerate the Li depletion. The poster as a paper shall shortly be submitted to publication.Our sample of stars is the result of joining two samples: a sample base of our previous study (whose majority has been observed and measured by us) and a second obtained from different catalogues to find publications of the abundance of Li. The total number of objects of our sample is 416 stars.