Determining the Elemental and Isotopic Composition of the Pre-solar Nebula from Genesis Data Analysis: The Case of Oxygen

J. Martin Laming, V. S. Heber, D. S. Burnett, Y. Guan, Richard Hervig, G. R. Huss, Amy Jurewicz, E. C. Koeman-Shields, K. D. McKeegan, L. R. Nittler, D. B. Reisenfeld, K. D. Rieck, J. Wang, R. C. Wiens, D. S. Woolum

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

We compare element and isotopic fractionations measured in bulk solar wind samples collected by NASA's Genesis mission with those predicted from models incorporating both the ponderomotive force in the chromosphere and conservation of the first adiabatic invariant in the low corona. Generally good agreement is found, suggesting that these factors are consistent with the process of solar wind fractionation. Based on bulk wind measurements, we also consider in more detail the isotopic and elemental abundances of O. We find mild support for an O abundance in the range 8.75-8.83, with a value as low as 8.69 disfavored. A stronger conclusion must await solar wind regime-specific measurements from the Genesis samples.

Original languageEnglish (US)
Article numberL12
JournalAstrophysical Journal Letters
Volume851
Issue number1
DOIs
StatePublished - Dec 10 2017

Keywords

  • Sun: abundances
  • Sun: chromosphere
  • solar wind
  • turbulence
  • waves

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Laming, J. M., Heber, V. S., Burnett, D. S., Guan, Y., Hervig, R., Huss, G. R., Jurewicz, A., Koeman-Shields, E. C., McKeegan, K. D., Nittler, L. R., Reisenfeld, D. B., Rieck, K. D., Wang, J., Wiens, R. C., & Woolum, D. S. (2017). Determining the Elemental and Isotopic Composition of the Pre-solar Nebula from Genesis Data Analysis: The Case of Oxygen. Astrophysical Journal Letters, 851(1), [L12]. https://doi.org/10.3847/2041-8213/aa9bf0