2453478

Target RA (J2000): 222.767441 and deg Target Dec (J2000): 5.94737 and deg Gaia GMag: 11.956 Programme ID: CH_PR140083 Programme Manager: GANDOLFI PI of observing programme: Benz Title of programme: Axis 1 - ChOIs-reloaded Abstract: While the TESS mission is monitoring the sky for planetary transits its photometric precision is lower than that of CHEOPS. This means that signals detected at low signal-to-noise by TESS can be confirmed with CHEOPS. We will observe such low SNR candidates from TESS with a three-fold objective: 1) we will follow-up tentative signals in multi-planet systems as these are less likely to be false positives than systems with a single planet 2) we will prioritize the confirmation of candidates that can be confirmed by ongoing and future radial-velocity campaigns 3) we will collect sufficient transits to measure radii with a precision of at least 6%. Such precision coupled with a 10% precision on the planetary mass is necessary for a detailed analysis of both the internal structure of the exoplanet and the formation/evolution process of the system. [truncated! Please see actual data for full text]