2070407

Target RA (J2000): 217.609116 and deg Target Dec (J2000): -46.15920 and deg Gaia GMag: 11.75 Programme ID: CH_PR140066 Programme Manager: NASCIMBENI PI of observing programme: Benz Title of programme: Axis 1 - Uncovering a maverick population: CHEOPS observations of hot Jupiter systems with inner small companions (MAVERICK) Abstract: Planetary systems hosting a hot or warm Jupiter (HJ/WJ) plus nearby small companion(s) such as WASP-47 (Nascimbeni et al. 2023) are extremely rare and very valuable to constrain formation and migration models. Only five such systems are known so far. Our goal is to increase the sample size by confirming and characterizing five TESS candidates with such an architecture and improving their orbital/physical parameters including ephemeris radii and (when feasible) planetary masses through TTVs. As demonstrated by our work on WASP-47 RVs and TTVs are very synergistic at decoding these complex systems. A dedicated RV follow-up will be coordinated. [truncated! Please see actual data for full text]