Corpus ID: 15194430

Protecting Life in the Milky Way: Metals Keep the GRBs Away

  title={Protecting Life in the Milky Way: Metals Keep the GRBs Away},
  author={K. Stanek and O. Gnedin and J. Beacom and A. Gould and J. Johnson and J. Kollmeier and M. Modjaz and M. Pinsonneault and R. Pogge and D. Weinberg},
  journal={arXiv: Astrophysics},
The host galaxies of the five local, z<0.25, long-duration gamma-ray bursts, each of which had a well-documented associated supernova, are all faint and metal-poor compared to the population of local star-forming galaxies. We quantify this statement by using a previous analysis of star-forming galaxies (z<0.2) from the Sloan Digital Sky Survey to estimate the fraction of local star formation as a function of host galaxy oxygen abundance. We find that only a small fraction (<25%) of current star… Expand

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