First spectroscopic study of ionised gas emission lines in the extreme low surface brightness galaxy Malin 1Junais, S. Boissier, B. Epinat, P. Amram, B. F. Madore, A. Boselli, J. Koda, A. Gil de Paz, J. C. Muños Mateos and L. CheminA&A, 637 (2020) A21DOI: https://doi.org/10.1051/0004-6361/201937330