Hertzsprung–Russell diagram for the studied BD and stellar populations from Lupus. The stellar luminosity is taken from the literature and re-adjusted to the new distance associated to the parallaxes from Gaia DR2 (Gaia Collaboration 2018). The BD population is shown in red, and the stellar population is indicated in blue. The pre-MS tracks of Baraffe et al. (2015) are overlaid in the figure. Objects with luminosities that would correspond to older ages than expected are considered subluminous and marked as squares. A number of points lay on top of each other (e.g., 4 BDs near the 1 Myr and the 0.1 M_⊙ lines.)