The VLT-FLAMES Tarantula Survey - XXXII. Low-luminosity late O-type stars: classification, main physical parameters, and silicon abundancesN. Markova, J. Puls, P. L. Dufton, D. J. Lennon, C. J. Evans, A. de Koter, O. H. Ramírez-Agudelo, H. Sana and J. S. VinkA&A, 634 (2020) A16DOI: https://doi.org/10.1051/0004-6361/201937082