Elusive hot stripped helium stars in the Galaxy - I. Evolutionary stellar models in the gap between subdwarfs and Wolf-Rayet starsL. Yungelson, A. Kuranov, K. Postnov, M. Kuranova, L. M. Oskinova and W.-R. HamannA&A, 683 (2024) A37DOI: https://doi.org/10.1051/0004-6361/202347806