Nucleosynthesis in primordial hypernovae

Research output: Contribution to journalArticleResearchpeer-review

2 Citations (Scopus)

Abstract

We investigate the relationship between explosion energy and nucleosynthesis in Population III supernovae and provide nucleosynthetic results for the explosions of stars with progenitor masses of 15 M, 20 M, 30 M, 40 M, 60 M, and 80M, and explosion energies between approximately 1050 erg and 1053 erg. We find that the typical abundance pattern observed in metal-poor stars is best matched by supernovae with progenitor mass in the range 15M - 30M and explosion energy of~(5-10)×1051 erg. In thesemodels, a reverse shock caused by jumps in density between shells of different composition serves to decrease synthesis of chromium and manganese, which is favourable to matching the observed abundances in metal-poor stars. Spherically symmetric explosions of our models with progenitor mass ≤ 40 M do not provide yields that are compatible with the iron-peak abundances that are typically observed in metal-poor stars; however, by approximating the yields that we might expect from these models in highly aspherical explosions, we find indications that explosions of stars 40 M - 80 M with bipolar jets may be good candidates for the enrichment sources of metal-poor stars with enhanced carbon abundances.

Original languageEnglish
Pages (from-to)495-516
Number of pages22
JournalMonthly Notices of the Royal Astronomical Society
Volume479
Issue number1
DOIs
Publication statusPublished - 1 Sep 2018

Keywords

  • Abundances
  • Early universe
  • Nucleosynthesis
  • Supernovae: general

Cite this

@article{c4b594d5de90484c88c4a32a8f84ccd7,
title = "Nucleosynthesis in primordial hypernovae",
abstract = "We investigate the relationship between explosion energy and nucleosynthesis in Population III supernovae and provide nucleosynthetic results for the explosions of stars with progenitor masses of 15 M⊙, 20 M⊙, 30 M⊙, 40 M⊙, 60 M⊙, and 80M⊙, and explosion energies between approximately 1050 erg and 1053 erg. We find that the typical abundance pattern observed in metal-poor stars is best matched by supernovae with progenitor mass in the range 15M⊙ - 30M⊙ and explosion energy of~(5-10)×1051 erg. In thesemodels, a reverse shock caused by jumps in density between shells of different composition serves to decrease synthesis of chromium and manganese, which is favourable to matching the observed abundances in metal-poor stars. Spherically symmetric explosions of our models with progenitor mass ≤ 40 M⊙ do not provide yields that are compatible with the iron-peak abundances that are typically observed in metal-poor stars; however, by approximating the yields that we might expect from these models in highly aspherical explosions, we find indications that explosions of stars 40 M⊙ - 80 M⊙ with bipolar jets may be good candidates for the enrichment sources of metal-poor stars with enhanced carbon abundances.",
keywords = "Abundances, Early universe, Nucleosynthesis, Supernovae: general",
author = "Grimmett, {J. J.} and Alexander Heger and Karakas, {Amanda I.} and Bernhard M{\"u}ller",
year = "2018",
month = "9",
day = "1",
doi = "10.1093/mnras/sty1417",
language = "English",
volume = "479",
pages = "495--516",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press, USA",
number = "1",

}

Nucleosynthesis in primordial hypernovae. / Grimmett, J. J.; Heger, Alexander; Karakas, Amanda I.; Müller, Bernhard.

In: Monthly Notices of the Royal Astronomical Society, Vol. 479, No. 1, 01.09.2018, p. 495-516.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Nucleosynthesis in primordial hypernovae

AU - Grimmett, J. J.

AU - Heger, Alexander

AU - Karakas, Amanda I.

AU - Müller, Bernhard

PY - 2018/9/1

Y1 - 2018/9/1

N2 - We investigate the relationship between explosion energy and nucleosynthesis in Population III supernovae and provide nucleosynthetic results for the explosions of stars with progenitor masses of 15 M⊙, 20 M⊙, 30 M⊙, 40 M⊙, 60 M⊙, and 80M⊙, and explosion energies between approximately 1050 erg and 1053 erg. We find that the typical abundance pattern observed in metal-poor stars is best matched by supernovae with progenitor mass in the range 15M⊙ - 30M⊙ and explosion energy of~(5-10)×1051 erg. In thesemodels, a reverse shock caused by jumps in density between shells of different composition serves to decrease synthesis of chromium and manganese, which is favourable to matching the observed abundances in metal-poor stars. Spherically symmetric explosions of our models with progenitor mass ≤ 40 M⊙ do not provide yields that are compatible with the iron-peak abundances that are typically observed in metal-poor stars; however, by approximating the yields that we might expect from these models in highly aspherical explosions, we find indications that explosions of stars 40 M⊙ - 80 M⊙ with bipolar jets may be good candidates for the enrichment sources of metal-poor stars with enhanced carbon abundances.

AB - We investigate the relationship between explosion energy and nucleosynthesis in Population III supernovae and provide nucleosynthetic results for the explosions of stars with progenitor masses of 15 M⊙, 20 M⊙, 30 M⊙, 40 M⊙, 60 M⊙, and 80M⊙, and explosion energies between approximately 1050 erg and 1053 erg. We find that the typical abundance pattern observed in metal-poor stars is best matched by supernovae with progenitor mass in the range 15M⊙ - 30M⊙ and explosion energy of~(5-10)×1051 erg. In thesemodels, a reverse shock caused by jumps in density between shells of different composition serves to decrease synthesis of chromium and manganese, which is favourable to matching the observed abundances in metal-poor stars. Spherically symmetric explosions of our models with progenitor mass ≤ 40 M⊙ do not provide yields that are compatible with the iron-peak abundances that are typically observed in metal-poor stars; however, by approximating the yields that we might expect from these models in highly aspherical explosions, we find indications that explosions of stars 40 M⊙ - 80 M⊙ with bipolar jets may be good candidates for the enrichment sources of metal-poor stars with enhanced carbon abundances.

KW - Abundances

KW - Early universe

KW - Nucleosynthesis

KW - Supernovae: general

UR - http://www.scopus.com/inward/record.url?scp=85051510162&partnerID=8YFLogxK

U2 - 10.1093/mnras/sty1417

DO - 10.1093/mnras/sty1417

M3 - Article

VL - 479

SP - 495

EP - 516

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 1

ER -