Bottom-up dust nucleation theory in oxygen-rich evolved stars - I. Aluminium oxide clusters David Gobrecht, John M. C. Plane, Stefan T. Bromley, Leen Decin, Sergio Cristallo and Sanjay Sekaran A&A, 658 (2022) A167 Published online: 17 February 2022 DOI: 10.1051/0004-6361/202141976