A tight angular-momentum plane for disc galaxies Pavel E. Mancera Piña, Lorenzo Posti, Gabriele Pezzulli, Filippo Fraternali, S. Michael Fall, Tom Oosterloo and Elizabeth A. K. Adams A&A, 651 (2021) L15 Published online: 29 July 2021 DOI: 10.1051/0004-6361/202141574