Overview of the sample. For each target, the Q_ϕ image in the H band is shown. First two rows: host disks with clearly visible substructures, the third row: contains disks with no or marginal evidence of substructures, and the last two rows: non-detections. The horizontal bars indicate a physical scale of 100 au. The main star is behind the gray circle in the center, symbolizing the coronagraph. Stellar companions are indicated by cyan circles. Each image has a different logarithmic color scale, chosen to highlight all relevant features. The C component of HT Lup is shown in the inset image, although the star would lie outside of the box. North is up, and east is left.