Observational diversity of bright long-lived Type II supernovae T. Nagao, T. M. Reynolds, H. Kuncarayakti, R. Cartier, S. Mattila, K. Maeda, J. Sollerman, P. J. Pessi, J. P. Anderson, C. Inserra et al. (15 more) A&A, 699 (2025) A283 Published online: 17 July 2025 DOI: 10.1051/0004-6361/202554988