Ejected masses of ⁵⁹Co and ⁵⁹Ni by star of different initial masses and computed by different authors: WW95 stands for Woosley & Weaver (1995) and CL13 for Chieffi & Limongi (2013). Both models are for solar metallicity. The models from Woosley & Weaver (1995) correspond to their A series, and the models of Chieffi & Limongi (2013) correspond to their rotating models. In both cases, the yields for the radionuclides are given 2.5 × 10⁴ s after the explosion. That means that ⁵⁹Ni had no time to decay (half-life is about 10⁵ years). The masses in ⁵⁹Ni of Woosley & Weaver (1995) present a kind of sawtooth behaviour below 25 M_⊙ (see the red continuous lines), a hatched area covers that zone to guide the eye a bit. This was also done for the mass of ⁵⁹Co from Woosley & Weaver (1995), although here the variations are much smaller.