Investigating the architecture and internal structure of the TOI-561 system planets with CHEOPS, HARPS-N, and TESS - Lacedelli, G.; Wilson, T. G.; Malavolta, L.; Hooton, M. J.; Collier Cameron, A.; Alibert, Y.; Mortier, A.; Bonfanti, A.; Haywood, R. D.; Hoyer, S.; Piotto, G.; Bekkelien, A.; et al. (Monthly Notices of the Royal Astronomical Society, 2022)