Massive stars evolution with new C12+C12 nuclear reaction rate -- the core carbon-burning phase

Abstract

Nuclear reactions drive the stellar evolution and contribute to the stellar and galactic chemicals abundances. New determinations of the nuclear reaction rates for key fusion reactions of stellar evolution are now available, paving the way to improved stellar model predictions. We explore the impact of new C12+C12 reaction rates for massive stars evolution, structure, and nucleosynthesis during core carbon-burning phase. We analyse the consequences for stars of different masses including rotation-induced mixing. We computed a grid of massive stars at solar metallicity using the stellar evolution code GENEC. We explored the results using three different references for the rates, with or without rotation. We study the effect in terms of evolution, structure, and critical mass limit between intermediate and massive stars. We explored the consequences for nucleosynthesis during the core C-burning phase by means of a one-zone nucleosynthesis code. We confirm the significant impact of using the recent nuclear reaction rates following the hindrance hypothesis as well as the mass-dependent effect of a resonance at 2.14 MeV. This impacts the characteristics of the core of stars from the C-ignition and during all the core C-burning phase. The change of rates modifies the central nucleosynthesis during the core C-burning phase, resulting in an underproduction of s-process elements. The correct and accurate determination of the nuclear reaction rates, with especially the existence and location of resonances, impacts stellar evolution in many aspects affecting the model predictions. The choice of the nuclear reaction rates reference for the C12+C12 fusion reaction changes significantly the behaviour of the core during the C-burning phase. This choice is then to be taken carefully in order to interpret stellar evolution and fate of massive stars.

17 pages, 15 figures, Accepted by A&A

References in corpus (22)

• The chemical make-up of the Sun: A 2020 vision
• The Supernova Channel of Super-AGB Stars
• Super and massive AGB stars - IV. Final fates - Initial to final mass relation
• The 12C(a,g)16O reaction and its implications for stellar helium burning
• The s process in massive stars at low metallicity. Effect of primary N14 from fast rotating stars
• s-Process Nucleosynthesis in Advanced Burning Phases of Massive Stars
• Diagnoses to unravel secular hydrodynamical processes in rotating main sequence stars
• The 12C + 12C reaction and the impact on nucleosynthesis in massive stars
• Fusion reactions in multicomponent dense matter
• Neon Abundances in B-Stars of the Orion Association: Solving the Solar Model Problem?
• Towards a Realistic Explosion Landscape for Binary Population Synthesis
• Possible Resonances in the 12C + 12C Fusion Rate and Superburst Ignition
• LUNA: Status and Prospects
• On Carbon Burning in Super Asymptotic Giant Branch Stars
• Trojan Horse as an indirect technique in nuclear astrophysics. Resonance reactions
• Lithium depletion and angular momentum transport in solar-type stars
• The impact of the new measurement of the ${}^{12}\mathrm{C}{+}^{12}\mathrm{C}$ fusion cross section on the final compactness of the massive stars
• The p-process in exploding rotating massive stars
• A new ${}^{12}$C + ${}^{12}$C nuclear reaction rate: impact on stellar evolution
• The impact of ${}^{17}$O$+\alpha$ reaction rate uncertainties on the s-process in rotating massive stars
• The composition of massive white dwarfs and their dependence on the C-burning modeling
• Type Ia Supernova Explosions from Hybrid Carbon-Oxygen-Neon White Dwarf Progenitors That Have Mixed During Cooling

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