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 language | English |
|---|---|
| Pages (from-to) | 495-516 |
| Number of pages | 22 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 479 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Sep 2018 |
Keywords
- Abundances
- Early universe
- Nucleosynthesis
- Supernovae: general
Cite this
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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 journal › Article › Research › peer-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 -