A new 17F(p, γ)18Ne reaction rate and its implications for nova nucleosynthesis

S. Parete-Koon, W. R. Hix, M. S. Smith, Sumner Starrfield, D. W. Bardayan, M. W. Guidry, A. Mezzacappa

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Proton capture by 17F plays an important role in the synthesis of nuclei in nova explosions. A revised rate for this reaction, based on a measurement of the 1H(17F, p)17F excitation function using a radioactive 17F beam at Oak Ridge National Laboratory's Holifield Radioactive Ion Beam Facility, is used to calculate the nucleosynthesis in nova outbursts on the surfaces of 1.25 and 1.35 M · ONeMg white dwarfs and a 1.00 M· CO white dwarf. We find that the new 17F (p, γ)18Ne reaction rate changes the abundances of some nuclides (e.g., 17O) synthesized in the hottest zones of an explosion on a 1.35 M· white dwarf by more than a factor of 104 compared to calculations using some previous estimates for this reaction rate, and by more than a factor of 3 when the entire exploding envelope is considered. In a 1.25 M· white dwarf nova explosion, this new rate changes the abundances of some nuclides synthesized in the hottest zones by more than a factor of 600, and by more than a factor of 2 when the entire exploding envelope is considered. Calculations for the 1.00 M· white dwarf nova show that this new rate changes the abundance of 18Ne by 21% but has negligible effect on all other nuclides. Comparison of model predictions with observations is also discussed.

Original languageEnglish (US)
Pages (from-to)1239-1245
Number of pages7
JournalAstrophysical Journal
Volume598
Issue number2 I
DOIs
StatePublished - Dec 1 2003

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nuclear fusion
reaction rate
explosion
reaction kinetics
nuclides
explosions
envelopes
outburst
ridges
ion
ion beams
prediction
nuclei
protons
rate
synthesis
estimates
predictions
excitation
calculation

Keywords

  • Novae, cataclysmic variables
  • Nuclear reactions, nucleosynthesis, abundances

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Parete-Koon, S., Hix, W. R., Smith, M. S., Starrfield, S., Bardayan, D. W., Guidry, M. W., & Mezzacappa, A. (2003). A new 17F(p, γ)18Ne reaction rate and its implications for nova nucleosynthesis. Astrophysical Journal, 598(2 I), 1239-1245. https://doi.org/10.1086/378979

A new 17F(p, γ)18Ne reaction rate and its implications for nova nucleosynthesis. / Parete-Koon, S.; Hix, W. R.; Smith, M. S.; Starrfield, Sumner; Bardayan, D. W.; Guidry, M. W.; Mezzacappa, A.

In: Astrophysical Journal, Vol. 598, No. 2 I, 01.12.2003, p. 1239-1245.

Research output: Contribution to journalArticle

Parete-Koon, S, Hix, WR, Smith, MS, Starrfield, S, Bardayan, DW, Guidry, MW & Mezzacappa, A 2003, 'A new 17F(p, γ)18Ne reaction rate and its implications for nova nucleosynthesis', Astrophysical Journal, vol. 598, no. 2 I, pp. 1239-1245. https://doi.org/10.1086/378979
Parete-Koon S, Hix WR, Smith MS, Starrfield S, Bardayan DW, Guidry MW et al. A new 17F(p, γ)18Ne reaction rate and its implications for nova nucleosynthesis. Astrophysical Journal. 2003 Dec 1;598(2 I):1239-1245. https://doi.org/10.1086/378979
Parete-Koon, S. ; Hix, W. R. ; Smith, M. S. ; Starrfield, Sumner ; Bardayan, D. W. ; Guidry, M. W. ; Mezzacappa, A. / A new 17F(p, γ)18Ne reaction rate and its implications for nova nucleosynthesis. In: Astrophysical Journal. 2003 ; Vol. 598, No. 2 I. pp. 1239-1245.
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