Detailed characterization of the planet-hosting binary system HD 202772

E. JOFRÉ; Y. GÓMEZ MAQUEO CHEW; R. PETRUCI; C. SAFFE; J. MELENDEZ; E. MARTIOLI ; L. SAKER ; L. GARCÍA ; C. ZULOAGA; M. FLORES; P. MIQUELARENA; L. FERRERO ; M. GOMEZ

San Juan

Congreso; 65 Reunión Anual de la Asociación Argentina de Astronomía; 2023

Facultad de Ciencias Exactas, Físicas y Naturales de la UNSJ

The components of binary systems form from the same gas cloud at the same time and, thus, they share the initial chemical composition. Hence, precise and detailed chemical analysis of these systems allows us to test how planet formation, and/or other astrophysical processes, like atomic diffusion, might influence the stellar composition. From high-quality Gemini-GRACES spectra, in this contribution, we present high-precision stellar parameters and detailed chemical abundances of the planet-hosting binary system HD 202772. Moreover, using our derived precise stellar parameters, radial velocity data, and TESS photometric observations we also determined refined planet properties.