Two types of distribution of the gas velocity dispersion of MaNGA galaxies L. S. Pilyugin, I. A. Zinchenko, M. A. Lara-López, Y. A. Nefedyev and J. M. Vílchez A&A, 646 (2021) A54 Published online: 05 February 2021 DOI: 10.1051/0004-6361/202040029