Star formation rate surface density (∑_SFR) map obtained for the isolated triplet SIT 45 in a 4 arcmin² FoV. North is up, east is left. Coordinates are given in J2000. The colour bar is normalised to show the mean value for all the pixels within 5σ. Orange contours correspond to the mask defined on the ∑_SFR map using astrodendro. For ease of comparison, the contours corresponding to the A galaxy (red contour) and the B and C galaxies (cyan contours) are shown. White contours were defined as astrodendro masks on a high-resolution three-colour (g, r, i) image from the HSC of the Subaru telescope (Aihara et al. 2022) of SIT 45 (as shown in Fig. 1). The red contour corresponding to the A galaxy selected using the GALEX FUV image (as shown in the upper left panel of Fig. 2).