Investigating the architecture and internal structure of the TOI-561 system planets with CHEOPS, HARPS-N, and TESS

techniques photometrictechniques radial velocitiesplanets and satellites fundamental parametersplanets and satellites interiorsstarsindividualTOI-561 TIC 377064495Gaia EDR3 3850421005290172416Astrophysics - Earth and Planetary Astrophysics