Context. In the last 15 years different ground-based spectroscopic surveys have been
started (and completed) with the general aim of delivering stellar parameters and elemental …

Due to their production sites, as well as to how they are processed and destroyed in stars,
the light elements are excellent tools to investigate a number of crucial issues in modern …

We present detailed chemical abundances for 99 red-giant branch stars in the centre of the
Sculptor dwarf spheroidal galaxy, which have been obtained from high-resolution …

Aims. We aim to constrain the mixing processes in low-mass stars by investigating the
behaviour of the Li surface abundance after the main sequence. We take advantage of the …

Theoretical models of stellar evolution predict that most of the lithium inside a star is
destroyed as the star becomes a red giant. However, observations reveal that about 1% of …

Aims. A homogeneous determination of basic stellar parameters of young stellar object
(YSO) candidates is needed to confirm their pre-main sequence evolutionary stage and …

We investigate the properties of 1262 red giant stars with high photospheric abundances of
lithium observed by the GALAH and K2-HERMES surveys, and discuss them in the context …

Context. Lithium-rich giant stars are rare and their existence poses a challenge to our
understanding of stellar structure and evolution. In particular, open clusters aptly constrain …

This work aims to examine in detail the depletion of lithium in solar twins to better constrain
stellar evolution models and investigate its possible connection with exoplanets. We employ …

About 1% of giant stars have anomalously high Li abundances (A Li) in their atmospheres,
conflicting directly with the prediction of standard stellar evolution models. This finding …