Explosive yields of massive stars from Z = 0 to Z = Z ⊙

We present a new and homogeneous set of explosive yields for masses 13, 15, 20, 25, 30 and 35 M⊙ and metallicities Z = 0, 10 , 10, 10, 6 · 10, 2 · 10. A wide network extending up to Mo has been used in all the computation. We show that at low metallicities (Z ≤ 10) the final yields do not depend significantly on the initial chemical composition of the models so that a scaled solar distribution may be safely assumed at all metallicities. Moreover, no elements above Zn are produced by any mass in the grid up to a metallicity ∼ 10. These yields are available for any choice of the mass cut upon request. Subject headings: nuclear reactions, nucleosynthesis, abundances – stars: evolution – stars: supernovae