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PUSHing Core-collapse Supernovae to Explosions in Spherical Symmetry. IV. Explodability, Remnant Properties, and Nucleosynthesis Yields of Low-metallicity Stars

Journal Article · · The Astrophysical Journal (Online)
 [1];  [2];  [2];  [2];  [3];  [4];  [3];  [5]
  1. GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); North Carolina State University
  2. North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics
  3. Univ. of Basel (Switzerland)
  4. Univ. degli Studi di Trento (Italy); Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
  5. GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Univ. of Basel (Switzerland)
+ Show Author Affiliations
In this fourth paper of the series, we use the parametrized, spherically symmetric explosion method PUSH to perform a systematic study of two sets of non-rotating stellar progenitor models. Our study includes preexplosion models with metallicities Z=0 and Z=Z ×10-4 and covers a progenitor mass range from 11 up to 75 M⊙. We present and discuss the explosion properties of all models and predict remnant (neutron star or black hole) mass distributions within this approach. We also perform systematic nucleosynthesis studies and predict detailed isotopic yields as function of the progenitor mass and metallicity. We present a comparison of our nucleosynthesis results with observationally derived 56Ni ejecta from normal core-collapse supernovae and with iron-group abundances for metal-poor star HD 84937. Overall, our results for explosion energies, remnant mass distribution, 56Ni mass, and iron group yields are consistent with observations of normal CCSNe. We find that stellar progenitors at low and zero metallicity are more prone to BH formation than those at solar metallicity, which allows for the formation of BHs in the mass range observed by LIGO/VIRGO.
Research Organization:
North Carolina State Univ., Raleigh, NC (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
FG02-02ER41216
OSTI ID:
1800049
Alternate ID(s):
OSTI ID: 23024655
Journal Information:
The Astrophysical Journal (Online), Journal Name: The Astrophysical Journal (Online) Journal Issue: 2 Vol. 888; ISSN 1538-4357
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (1)

The Explosion Mechanism of Core-Collapse Supernovae and Its Observational Signatures text January 2020

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