Nucleosynthesis for SN 1987A from single-star and binary-merger progenitors

C. Fröhlich, S. Curtis, K. Ebinger, S. Ghosh, A. Menon, A. Heger, A. Perego, F. K. Thielemann

Research output: Contribution to journalArticleResearchpeer-review

Abstract

We apply the parametrized, spherically symmetric explosion method PUSH to two sets of pre-explosion models suitable for SN1987A: blue supergiants (BSGs) resulting from the merger of a main sequence star with a giant and red supergiants (RSGs) representing the end point of single-star stellar evolution. For each model, we perform a calibration of the PUSH method to the observational properties of SN1987A and calculate the detailed explosive nucleosynthesis yields. We find that such a calibration to SN1987A is only possible for one of the BSG models. We compare the yields from this model with the yields from the best-fit RSG model. The largest differences are found for nuclei in the mass range of 20 A 40 which are mostly synthesized pre-explosion. We predict a neutron star with a gravitational mass of 1.48Me from the BSG model and a neutron star of 1.41Me from the RSG model.

Original languageEnglish
Article number084002
Number of pages17
JournalJournal of Physics G: Nuclear and Particle Physics
Volume46
Issue number8
DOIs
Publication statusPublished - 2 Jul 2019

Keywords

  • nucleosynthesis
  • SN 1987A
  • supernovae

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