The planetary system Kepler-27 revisited Ximena Saad-Olivera, Cintia F. Martínez, Matias J. García and Fernando Roig Eur. Phys. J. Spec. Top., 232 18-19 (2023) 3131-3146 Published online: 07 December 2023 DOI: 10.1140/epjs/s11734-023-01039-5