A UNIONS view of the brightest central galaxies of candidate fossil groups A. Chu, F. Durret, A. Ellien, F. Sarron, C. Adami, I. Márquez, N. Martinet, T. de Boer, K. C. Chambers, J.-C. Cuillandre et al. (3 more) A&A, 673 (2023) A100 Published online: 12 May 2023 DOI: 10.1051/0004-6361/202346119