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

Fröhlich, C. and Curtis, S. and Ebinger, K. and Ghosh, S. and Menon, A. and Heger, A. and Perego, A. and Thielemann, F. -K.. (2019) Nucleosynthesis for SN 1987A from single-star and binary-merger progenitors. Journal of Physics G: Nuclear and Particle Physics, 46 (8). 084002.

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Official URL: https://edoc.unibas.ch/75091/

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We apply the parametrized, spherically symmetric explosion method PUSH to two sets of pre-explosion models suitable for SN 1987A: 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 SN. 1987A and calculate the detailed explosive nucleosynthesis yields. We find that such a calibration to SN. 1987A 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 1.48 M-circle dot from the BSG model and a neutron star of 1.41 M-circle dot from the RSG model.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Thielemann, Friedrich-Karl
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:IOP Publishing
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:15 Apr 2020 15:29
Deposited On:15 Apr 2020 15:29

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