Ivan Ramirez (Carnegie) : Planet signatures in stellar abundances

The process of planet formation has likely left detectable signatures in the chemical composition of the host stars, as exemplified by the now well-established connection between high stellar metallicity and the presence of giant planets. It has been claimed that a planet connection exists for the lithium abundances but age and metallicity effects might be producing spurious results. Precise analyses of several other elements reveal statistically significant correlations between abundance and dust condensation temperature, which have been proposed as a signature of the formation of terrestrial planets alone, although this interpretation faces a number of difficulties. I will review the status of these debates concerning the connection between host star abundances and planet formation, as well as present suggestions for future directions that could be taken in order to solve them.