5σ upper mass limits for ϵ Ind Ab derived from observations with NaCo L′, reduced at a TPR of 50 (panel a) and 90% (panel b), for different age assumptions. The solid lines represent limits obtained from AMES-Cond atmospheric and evolutionary grids and the dashed lines represent the limits from Morley et al. (2012, 2014) atmospheric models, coupled with the evolutionary track from AMES-Cond grids. The solid blue line represents the companion mass predicted from Feng et al. (2019) at an inclination of , with the associated region of uncertainty in mass shown as the filled region between the blue dashed lines. The dashed black lines have the same meaning as in the previous figures.