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4. 19F(p,γ)20Ne and 19F(p,α)16O reaction rates and their effect on calcium production in Pop III stars

19F(p,γ)20Ne and 19F(p,α)16O reaction rates and their effect on calcium production in Pop III stars

Published: May 2021 Wiescher

Lead Author(s): R.J. deBoer

First generation stars have a different evolution than those of later generations owing to their initial primordial abundance composition. Most notably, the lack of carbon, oxygen, and nitrogen, means that the CNO cycles occur at higher temperature compared to later stellar generations. It is currently controversial if the observed enhanced abundances of Ca in the most metal-poor stars could be a result of the high temperature H-burning under these conditions. The level of this enrichment depends on the hot breakout path from the CNO cycles via the ¹⁹F(p,γ)²⁰Ne reaction. Learn more

Publication: ¹⁹F(p,γ)²⁰Ne and ¹⁹F(p,α)¹⁶O reaction rates and their effect on calcium production in Population III stars from hot CNO breakout