Pair creation supernovae at low and high redshift

  title={Pair creation supernovae at low and high redshift},
  author={N. Langer and C. Norman and A. Koter and J. Vink and M. Cantiello and S.-C.Yoon},
  journal={Astronomy and Astrophysics},
Aims. Pair creation supernovae (PCSN) are thought to be produced from very massive low metallicity stars. The spectacularly bright SN 2006gy does show several signatures expected from PCSNe. Here, we investigate the metallicity threshold below which PCSN can form and estimate their occurrence rate. Methods. We perform stellar evolution calculations for stars of 150 Mand 250 Mof low metallicity (Z� / 5a ndZ� /20), and analyze their mass loss rates. Results. We find that the bifurcation between… Expand

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