The thermonuclear production of F19 by Wolf-Rayet stars revisited

Abstract

New models of rotating and non-rotating stars are computed for initial masses between 25 and 120 Msun and for metallicities Z = 0.004, 0.008, 0.020 and 0.040 with the aim of reexamining the wind contribution of Wolf-Rayet (WR) stars to the F19 enrichment of the interstellar medium. Models with an initial rotation velocity vini = 300 km/s are found to globally eject less F19 than the non-rotating models. We compare our new predictions with those of Meynet & Arnould (2000), and demonstrate that the F19 yields are very sensitive to the still uncertain F19(alpha,p)Ne22 rate and to the adopted mass loss rates. Using the recommended mass loss rate values that take into account the clumping of the WR wind and the NACRE reaction rates when available, we obtain WR F19 yields that are significantly lower than predicted by Meynet & Arnould (2000), and that would make WR stars non-important contributors to the galactic F19 budget. In view, however, of the large nuclear and mass loss rate uncertainties, we consider that the question of the WR contribution to the galactic F19 remains quite largely open.

arXiv comment9 pages, 5 figures, accepted for publication in Astronomy & Astrophysics

References in corpus (13)

• Mass-loss predictions for O and B stars as a function of metallicity
• Stellar evolution with rotation VIII: Models at Z = 10^{-5} and CNO yields for early galactic evolution
• Stellar evolution with rotation XI: Wolf-Rayet star populations at different metallicities
• Stellar evolution with rotation X: Wolf-Rayet star populations at solar metallicity
• Stellar evolution with rotation VII: Low metallicity models and the blue to red supergiant ratio in the SMC
• Evolution, Explosion and Nucleosynthesis of Core Collapse Supernovae
• Reaction Rates Uncertainties and the Production of F19 in AGB Stars
• On the origin of fluorine in the Milky Way
• New estimates of the contribution of Wolf--Rayet stellar winds to the Galactic 26Al
• Fluorine Abundances in the Large Magellanic Cloud and Omega Centauri: Evidence for Neutrino Nucleosynthesis?
• FUSE Measurements of Interstellar Fluorine
• The effect of the 19F(alpha,p)22Ne reaction rate uncertainty on the yield of fluorine from Wolf-Rayet Stars
• Fluorine Abundances in the Orion Nebula Cluster

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