Description
As stars and planets are formed in the same environment, it is conceivable that a fundamental connection exists between the compositions of planets and their host stars. Exploring this relationship offers insights into the intricate history of the systems' formation and evolution. I investigate both the existence and complexity of a systematic relationship between the compositions of host stars and their planets. To unravel such complexities, a diverse stellar sample that spans a wide range of chemical balances is needed. I put emphasis on [α/Fe] variety, as these α-elements are present in the interiors of rocky exoplanets. Planets orbiting iron-poor stars are thus of particular interest, offering an opportunity to study stars with compositions like and unlike the Sun; by leveraging planetary interior modelling, I analyse how the elemental abundances of these stars relate to the inferred compositions of their orbiting small planets. Here, I present results from the analysis of an extensive and homogenous sample. Understanding these trends is crucial for refining models of planet formation and assessing the diversity of planetary systems beyond our own.
