Evolution of Fluorine Abundances with the ν-Process

Details Evolution of Fluorine Abundances with the ν-Process Evolution of Fluorine Abundances with the ν-Process

2011-08-15

arxiv.org/abs/1108.3030v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, 1 figure, Accepted for publication in ApJL

Scientific paper

We calculate the evolution of fluorine in the solar neighborhood with the \nu-process of core-collapse supernovae, the results of which are in good agreement with the observations of field stars. The \nu-process operating in supernovae causes the [F/O] ratio to plateau at [O/H] < -1.2, followed by a rapid increase toward [O/H] ~ -0.5 from the contribution of Asymptotic Giant Branch stars. The plateau value of [F/O] depends on the neutrino luminosity released by core-collapse supernovae and may be constrained by using future observations of field stars at low metallicities. For globular clusters, the handful of [F/O] measurements suggest that the relative contribution from low-mass supernovae is smaller in these systems than in the field.

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