Circumnuclear regions of different BPT types in star-forming MaNGA galaxies: AGN detectability L. S. Pilyugin, E. K. Grebel, I. A. Zinchenko, M. A. Lara-López, Y. A. Nefedyev and V. M. Shulga A&A, 639 (2020) A96 Published online: 14 July 2020 DOI: 10.1051/0004-6361/202038034