Impact of Newly Measured Nuclear Reaction Rates on ${}^{26}$Al Ejected Yields from Massive Stars

Abstract

Over the last three years, the rates of all the main nuclear reactions involving the destruction and production of ${}^{26}$Al in stars (${}^{26}$Al(n, p)${}^{26}$Mg, ${}^{26}$Al(n, $\alpha$)${}^{23}$Na, ${}^{26}$Al(p, $\gamma$)${}^{27}$Si and ${}^{25}$Mg(p, $\gamma$)${}^{26}$Al) have been re-evaluated thanks to new high-precision experimental measurements of their cross sections at energies of astrophysical interest, considerably reducing the uncertainties in the nuclear physics affecting their nucleosynthesis. We computed the nucleosynthetic yields ejected by the explosion of a high-mass star (20 Msun, Z = 0.0134) using the FRANEC stellar code, considering two explosion energies, 1.2 10${}^{51}$ erg and 3 10${}^{51}$ erg. We quantify the change in the ejected amount of ${}^{26}$Al and other key species that is predicted when the new rate selection is adopted instead of the reaction rates from the STARLIB nuclear library. Additionally, the ratio of our ejected yields of 26Al to those of 14 other short-lived radionuclides (36Cl, 41Ca, 53Mn, 60Fe, 92Nb, 97Tc, 98Tc, 107Pd, 126Sn, 129I, 36Cs, 146Sm, 182Hf, 205Pb) are compared to early solar system isotopic ratios, inferred from meteorite measurements. The total ejected 26Al yields vary by a factor of ~3 when adopting the new rates or the STARLIB rates. Additionally, the new nuclear reaction rates also impact the predicted abundances of short-lived radionuclides in the early solar system relative to ${}^{26}$Al. However, it is not possible to reproduce all the short-lived radionuclide isotopic ratios with our massive star model alone, unless a second stellar source could be invoked, which must have been active in polluting the pristine solar nebula at a similar time of a core-collapse supernova.

arXiv commentPublished in MDPI Universe

References in corpus (30)

• The chemical composition of the Sun
• Compact Remnant Mass Function: Dependence on the Explosion Mechanism and Metallicity
• Nucleosynthesis in Massive Stars With Improved Nuclear and Stellar Physics
• Radioactive 26Al and massive stars in the Galaxy
• Presupernova evolution and explosive nucleosynthesis of rotating massive stars in the metallicity range -3 <=[Fe/H]<= 0
• Nucleosynthesis of Zinc and Iron-Peak Elements in Pop III Type II Supernovae : Comparison with abundances of Very Metal-Poor Halo Stars
• The nucleosynthesis of Al26 and Fe60 in solar metallicity stars extending in mass from 11 to 120 Msun: the hydrostatic and explosive contributions
• Star Formation Efficiencies and Lifetimes of Giant Molecular Clouds in the Milky Way
• Variations in the Abundance Pattern of Extremely Metal-poor Stars and Nucleosynthesis in Population III Supernovae
• Evolution, Explosion and Nucleosynthesis of Core Collapse Supernovae
• Charged-Particle Thermonuclear Reaction Rates: II. Tables and Graphs of Reaction Rates and Probability Density Functions
• Radioactive nuclei from cosmochronology to habitability
• The Effects of Thermonuclear Reaction-Rate Variations on 26Al Production in Massive Stars: a Sensitivity Study
• New results on 26Al production in classical novae
• Convective-reactive nucleosynthesis of K, Sc, Cl and p-process isotopes in O-C shell mergers
• The $\nu$ process in the light of an improved understanding of supernova neutrino spectra
• Influence of Nuclear Reaction Rate Uncertainties on Neutron Star Properties Extracted From X-ray Burst Model-Observation Comparisons
• Impact of a revised ${}^{25}$Mg(p,$\gamma$)${}^{26}$Al reaction rate on the operation of the Mg-Al cycle
• New theoretical Mass-loss rates of O and B Stars
• Classical-Nova Contribution to the Milky Way's ${}^{26}$Al Abundance: Exit Channel of the Key ${}^{25}$Al($p,\gamma$)${}^{26}$Si Resonance
• ESO-VLT and Spitzer spectroscopy of IRAS05328-6827: a massive young stellar object in the Large Magellanic Cloud
• Zero and extremely low metallicity rotating massive stars: evolution, explosion, and nucleosynthesis up to the heaviest nuclei
• Aluminium-26 from massive binary stars I: non-rotating models
• Hydrodynamical modeling of the light curves of core collapse supernovae with HYPERION. I. The mass range 13-25 Msun, the metallicities -3<=[Fe/H]<=0 and the case of SN1999em
• Advances and new ideas for neutron-capture astrophysics experiments at CERN n_TOF
• Radioactive nuclei in the early Solar System: analysis of the 15 isotopes produced by core-collapse supernovae
• Galactic Chemical Evolution of Radioactive Isotopes with an s-process Contribution
• Measurement of 73Ge(n,g) cross sections and implications for stellar nucleosynthesis
• Chemical evolution of ${}^{26}$Al and ${}^{60}$Fe in the Milky Way
• Impact of newly measured 26Al(n, p)26Mg and 26Al(n, α)23Na reaction rates on the nucleosynthesis of 26Al in stars