Maximally accreting supermassive stars: a fundamental limit imposed by hydrostatic equilibrium L. Haemmerlé, G. Meynet, L. Mayer, R. S. Klessen, T. E. Woods and A. Heger A&A, 632 (2019) L2 Published online: 02 December 2019 DOI: 10.1051/0004-6361/201936716