Constraining the top-light initial mass function in the extended ultraviolet disk of M 83 R. P. V. Rautio, A. E. Watkins, H. Salo, A. Venhola, J. H. Knapen and S. Comerón A&A, 681 (2024) A76 Published online: 17 January 2024 DOI: 10.1051/0004-6361/202347729