Main sequence dynamo magnetic fields emerging in the white dwarf phase M. Camisassa, J. R. Fuentes, M. R. Schreiber, A. Rebassa-Mansergas, S. Torres, R. Raddi and I. Dominguez A&A, 691 (2024) L21 Published online: 26 November 2024 DOI: 10.1051/0004-6361/202452539