Left: LBC CMD of stars within 2r_h of Tri II’s centroid. Stars with spectra that passed our quality cuts are shown color-coded by velocity whereas stars without spectroscopic information are represented by gray dots. The 13 Tri II member stars appear as dark blue points with large negative velocities and follow the PARSEC isochrone (Bressan et al. 2012) shown in blue, favored by Laevens et al. (2015b) to reproduce the CMD features of the stellar system (﹩13\;\mathrm{Gyr}﹩ and ﹩{\rm{[Fe/H]}}=-2.2﹩). Right: distribution of the LBC stars selected to follow the Tri II CMD features. The color-coding is the same as in the left-hand panel. The blue ellipse represents the region within the half-light radius of Tri II.