Evolution of Massive Stars Up to the End of Central Oxygen Burning

Abstract

We present a detailed study of the evolution of massive stars of masses 15, 20, 25 and 30 $\msun$ assuming solar-like initial chemical composition. The stellar sequences were evolved through the advanced burning phases up to the end of core oxygen burning. We present a careful analysis of the physical characteristics of the stellar models. In particular, we investigate the effect of the still unsettled reaction ${}^{12}$C($\alpha$,$\gamma$)${}^{16}$O on the advanced evolution by using recent compilations of this rate. We find that this rate has a significant impact on the evolution not only during the core helium burning phase, but also during the late burning phases, especially the shell carbon-burning. We have also considered the effect of different treatment of convective instability based on the Ledoux criterion in regions of varying molecular weight gradient during the hydrogen and helium burning phases. We compare our results with other investigations whenever available. Finally, our present study constitutes the basis of analyzing the nucleosynthesis processes in massive stars. In particular we will present a detail analysis of the {\it s}-process in a forthcoming paper.

arXiv comment46 pages, 15 figures. To be published in ApJ vol 611, August 10, 2004

References in corpus (3)

• Astrophysical Reaction Rates From Statistical Model Calculations
• Massive Stars in the Range $13-25{\mathrm{M}}_{\odot }$: Evolution and Nucleosynthesis. II. the Solar Metallicity Models
• The 12C(alpha,gamma)16O Reaction Rate and the Evolution of Stars in the Mass Range 0.8 < M/M(sun) < 25

Cited by in corpus (24)

• The Compactness of Presupernova Stellar Cores
• The 12C(a,g)16O reaction and its implications for stellar helium burning
• $s$-process production in rotating massive stars at solar and low metallicities
• NuGrid Stellar Data Set. II. Stellar Yields from H to Bi for Stellar Models with Mzams = 1 to 25Msun and Z = 0.0001 to 0.02
• s-Process Nucleosynthesis in Advanced Burning Phases of Massive Stars
• Binary progenitor models of type IIb supernovae
• On Variations Of Pre-Supernova Model Properties
• The 12C + 12C reaction and the impact on nucleosynthesis in massive stars
• Fusion reactions in multicomponent dense matter
• Carbon Nitrogen, and Oxygen Galactic Gradients: A Solution to the Carbon Enrichment Problem
• Crystallization of Carbon Oxygen Mixtures in White Dwarf Stars
• The effect of 12C + 12C rate uncertainties on the evolution and nucleosynthesis of massive stars
• Diffusion of Neon in White Dwarf Stars
• Nuclear Reaction Rate Uncertainties and Astrophysical Modeling. II. Carbon Yields from Low-mass Giants
• Uncertainties in Galactic Chemical Evolution Models
• Code dependencies of pre-supernova evolution and nucleosynthesis in massive stars: Evolution to the end of core helium burning
• Stellar Nucleosynthesis in the Hyades Open Cluster
• WO-Type Wolf-Rayet Stars: the Last Hurrah of Massive Star Evolution
• The Status and Future of Direct Nuclear Reaction Measurements for Stellar Burning
• Oxygen and light element synthesis by neutron-capture reactions in metal-free and extremely metal-poor AGB stars
• Stellar Neutrino Emission Across The Mass-Metallicity Plane
• The effect of 12C + 12C rate uncertainties on s-process yields
• alpha+28Si and 16O+16O molecular states, and their isoscalar monopole strengths
• A Study of the Abundance of Low-Z Elements in the Sun During its Whole Predicted Life