The electron-capture origin of supernova 2018zd.

  title={The electron-capture origin of supernova 2018zd.},
  author={Daichi Hiramatsu and D. Andrew Howell and S. Van Dyk and Jared A. Goldberg and Keiichi Maeda and Takashi J. Moriya and Nozomu Tominaga and Ken’ichi Nomoto and Griffin Hosseinzadeh and Iair Arcavi and Curtis McCully and Jamison Burke and K. Azalee Bostroem and Stefano Valenti and Yize Dong and Peter J. Brown and Jennifer E. Andrews and Christopher Bilinski and G. Grant Williams and Paul S. Smith and Nathan Smith and David J. Sand and Gagandeep S. Anand and Cheng-yuan Xu and Alexei V. Filippenko and M. C. Bersten and Gast{\'o}n Folatelli and Patrick L. Kelly and T. Noguchi and Koichi Itagaki},
  journal={arXiv: High Energy Astrophysical Phenomena},
There are two well-understood regimes of stellar death, although the transition has remained unresolved for 40 years. Stars up to about 8 solar masses lose their outer layers and leave behind a degenerate core -- a white dwarf. More massive stars (above $\sim$ 10 solar masses) produce an iron core, which collapse to a neutron star or black hole in a core-collapse supernova. Theoretically, stars in between ($\sim$ 8--10 solar masses) are expected to produce an electron-capture supernova when the… Expand
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