A Peculiar Chemical Pattern in the WASP-160 Binary System

E. JOFRÉ; R. PETRUCCI; Y. GÓMEZ MAQUEO CHEW; I. RAMÍREZ; C. SAFFE; E. MARTIOLI; A. BUCCINO; M. MASEK; L. GARCÍA; E. CANUL ; M. GÓMEZ

Congreso; III Congreso Latinoamericano de Astrobiología; 2021

Observations suggest that the components of binary systems form coevally from the same molecular cloud and share the initial chemical composition (e.g., Hawkins et al. 2020). Hence, wide binary stars with similar components (difference in effective temperature ≲ 300 K and difference in surface gravity ≲ 0.2 dex.) hosting planets provide a unique opportunity for exploring the star-planet chemical link (e.g., Meléndez et al. 2009, Saffe et al. 2016, 2017). To date, only five wide binaries with planets around one component have been previously studied in the literature (see e.g., Ramírez et al 2019, and references therein). Here we expand the small sample of well-studied planet-hosting binary stars by presenting the chemical abundance pattern of the WASP-160 binary system.