My research activity focuses on the study of the chemical properties of stars and stellar populations in our Galaxy and in the galaxies of the Local Group to better understand stellar physics and the chemical evolution of galactic systems. Over the years, I have thus developed various capabilities, both theoretical and observational, in stellar spectroscopy, particularly in determining chemical abundances from high-resolution spectroscopy of resolved stars.
My activity is developed along the following main lines of research:
- Chemical evolution of stellar populations in the Magellanic Clouds, in the Sagittarius dwarf spheroidal galaxy and in other systems (i.e. dwarf spheroidal galaxies, ultra-faint dwarf galaxies...) of the Local Group;
- Chemical properties of metal-poor stars to characterize the chemical evolution of the first stellar generations in galaxies;
- Primordial nucleosynthesis and chemical abundances of light elements, in particular the lithium problem (the discrepancy between the cosmological and stellar lithium abundance);
- Reconstruction of the merging events in the formation process of the Galaxy and other systems of the Local Group through the chemical properties of their stars;
- Search for new and alternative chemical diagnostics for star formation rate and IMF of a stellar system;
- Determination of fundamental stellar parameters (temperature, gravity...);
- Computation of theoretical models for stellar atmospheres;
- Development of software for the chemical analysis of stellar spectra;
