EXOA7

The properties of exoplanets are closely linked to their formation environments and to the physical and chemical characteristics of their host stars. Over the past decade, significant advances in high-precision stellar characterisation, resolved observations of protoplanetary disks, and extensive exoplanet surveys have substantially improved our understanding of how planetary systems emerge and evolve. Detailed stellar abundance measurements now provide key constraints on disk composition and initial conditions for planet formation. In contrast, observations of disk substructure and chemistry reveal the processes that regulate accretion, migration, and mass loss. At the same time, statistical studies of exoplanet demographics have uncovered correlations between host star properties, planetary architectures, and atmospheric characteristics, highlighting the importance of a unified star–disk–planet framework. This session aims to bring together observational, theoretical, and modelling studies that investigate the physical and chemical pathways linking stars, disks, and planets, from early formation stages to mature planetary systems, and to assess how these connections shape the diversity of exoplanetary atmospheres and system architectures observed today.