R vs. R -ICMD for objects in the FoV. Green dots: 162 objects from Mo-Call. Blue dots: 106 objects matched to Fnl3. Red dots: 62 objects matched to Fnl7. Yellow dots: 267 objects matched to K23, Megeath et al. (2012), Großschedl et al. (2019), and others (see text). Black dots: 105 stars without any youth indicator in the literature. Bona fide TTS are marked by crosses; CTTS (red), WTTS (blue). The red curve is an isochrone of 3 Myr (Baraffe et al. 2015) for a distance of 412pc. The black line correspond to the main sequence from Ducati et al. (2001). Ultrafast rotators (P < 0.5 days) are marked with open squares (see Sect. 6.2).