SiO maser polarization and magnetic field in evolved cool stars L. Marinho, F. Herpin, H. Wiesemeyer, A. López Ariste, A. Baudry, A. Asensio Ramos, A. Lèbre, P. Mathias and M. Montargès A&A, 688 (2024) A143 Published online: 12 August 2024 DOI: 10.1051/0004-6361/202349014