The peculiar chemical pattern of the WASP-160 binary system: signatures of planetary formation and evolution?

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

ASTRONOMICAL JOURNAL

IOP PUBLISHING LTD

Lugar: Londres; Año: 2021 vol. 162 p. 291 - 291

0004-6256

ide binary stars with similar components hosting planets provide a favorable opportunity for exploring the star-planet chemical connection. We perform a detailed characterization of the solar-type stars in the WASP-160 binary system. No planet has been reported yet around WASP-160A while WASP-160B is known to host a transiting Saturn-mass planet, WASP-160B b. For this planet, we also derive updated properties from both literature and new observations. Furthermore, using TESS photometry, we constrain the presence of transiting planets around WASP-160A and additional ones around WASP-160B. The stellar characterization includes, for the first time, the computation of high-precision differential atmospheric and chemical abundances of 25 elements based on high-quality Gemini-GRACES spectra. Our analysis reveals evidence of a correlation between the differential abundances and the condensation temperatures of the elements. In particular, we find both a small but significant deficit of volat