Inelastic e+Mg collision data and its impact on modelling stellar and supernova spectraP. S. Barklem, Y. Osorio, D. V. Fursa, I. Bray, O. Zatsarinny, K. Bartschat and A. JerkstrandA&A, 606 (2017) A11DOI: https://doi.org/10.1051/0004-6361/201730864