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The main goal of this work is to evaluate the correlation between Liabundance, age, and mass. Using high-quality ESO/HARPS data (R $\simeq$ 115000; 270 $\leq$ SNR $\leq$ 1000), we measured Li abundances via spectralsynthesis of the 6707.8 \r{A} $^7$Li line in 74 solar twins and analogs. Ourjoint analysis of 151 Sun-like stars (72 from our sample plus 79 solar twinsfrom a previous study) confirms the strong Li abundance-age correlationreported by other works. Mass and convective envelope size also seem to beconnected with Li abundance but with lower significance. We have found a linkbetween the presence of planets and low Li abundances in a sample of 192 starswith a high significance. Our results agree qualitatively with non-standardmodels, and indicate that several extra transport mechanisms must be taken intoaccount to explain the behaviour of Li abundance for stars with differentmasses and ages.

Lithium depletion in solar analogs: age and mass effects