A new mass estimate method with hydrodynamical atmospheres for very massive WNh stars Gautham N. Sabhahit, Jorick S. Vink, Andreas A. C. Sander, Matheus Bernini-Peron, Paul A. Crowther, Roel R. Lefever and Tomer Shenar A&A, 696 (2025) A200 Published online: 25 April 2025 DOI: 10.1051/0004-6361/202453447