Remnant mass as a function of the initial mass for tracks with Z = 10⁻⁶, Z = 0.002, Z = 0.01, in the top, middle, and bottom panels, respectively. The solid green line indicates the initial mass. The dashed pink, blue, and purple lines indicate the final mass of the star, the He core mass, and CO core mass, respectively. Black markers indicate the different fate of the models. The shaded green area indicates the mass lost during the evolution due to stellar winds. The shaded pink and blue regions are the outer envelope mass and the core mass ejected during the final fate, respectively.