Spectral and atmospheric characterisation of a new benchmark brown dwarf HD 13724 B E. L. Rickman, D. Ségransan, J. Hagelberg, J.-L. Beuzit, A. Cheetham, J.-B. Delisle, T. Forveille and S. Udry A&A, 635 (2020) A203 Published online: 02 April 2020 DOI: 10.1051/0004-6361/202037524