The initial mass function (IMF) of the first Pop III stars remains a mystery. Their predicted massive nature implies the existence of stars exploding as pair-instability supernovae (PISN) and now the LAMOST survey claims to have discovered a pure PISN descendant, J1010+2358, at [Fe/H]= -2.4. We investigate the implications of this new discovery for the Pop III IMF, by statistical comparison with the predictions of our cosmological galaxy formation model, NEFERTITI. Our work shows that even a single detection of a pure PISN descendant can be crucial to our understanding of the mass distribution of the first stars.
Koutsouridou, Salvadori, Skuladottir submitted to ApJL
