Mass of selected discs and planets around B9 to F5 type stars. Vertical lines show the cumulative mass of each planetary system; dots highlight planets from the most massive at bottom. Disc gas mass upper limits from HD lines are taken from this work (HD 163296) and from Kama et al. (2016, HD 100546). For HD 163296, the range of CO isotopologue-based disc mass estimates is shown by a light blue bar (8 × 10⁻³ to 5.8 × 10⁻¹ M_⊙; references in text). Also shown are the stellar mass divided by 10 and age; the mass limit for a gravitationally unstable disc (dashed line); an extrapolated dust-based disc mass range (dotted lines; Pascucci et al. 2016); and a population density colour map for planets around B9 to F5 type stars (data retrieved from exoplanets.org on 2019.07.16; bins contain from bottom to top 7, 6, and 1 planet). See text for individual planet and stellar mass references.