HR diagram illustrating UVIT-identified Be stars and their hot companions. The cluster isochrone (dashed black line), WD evolutionary tracks (dash-dotted black line, 0.3−0.5 M_⊙, from right to left), and MIST tracks (solid black line, 3.0−8.2 M_⊙, bottom to top) are shown for comparison. Cool and hot components of binary Be stars are marked in green and brown, and single-fit Be stars are in blue. Field Be+sdO systems from Wang et al. (2021) are displayed in purple, and model stripped stars with masses of 0.58, 0.66, 0.74, 0.85, 0.97, 1.11, 1.27, 1.43, 1.63, 1.88, 2.17, 2.49, and 2.87 M_⊙ from Götberg et al. (2018) are shown as golden circles (bottom to top).