| The detailed chemical compositions of planet-hosting stars provide vital clues on the formation and composition of exoplanetary systems. A recent analysis by Pavlenko et al. (2019) suggests that planet-hosting stars tend to have larger C/O abundance ratios than stars without confirmed planets at given metallicity. This signature was solidified in Amarsi et al. (2019) via a three dimensional non-local thermodynamic equilibrium (3D NLTE) analysis of about 60 F- and G-dwarfs in the thin disk. Here, I will present results from a detailed and extended reanalysis of the Amarsi et al. (2019) sample. We take advantage of high resolution and high S/N spectra from HARPS, and correct for departures from 1D LTE where possible, in order to determine Li, Na, Mg, Al, Si, S, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Cu and Zn abundances with high precision and accuracy. I will contrast the result for stars with and without confirmed planets, and discuss the possible implications on our understanding of exoplanetary systems. |
