On the accuracy of helioseismic determination of solar helium abundance

O. Richard, W. A. Dziembowski, R. Sienkiewicz, Philip R. Goode

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

The Helium abundance in the solar envelope is one of the most important seismic observables. We investigate the accuracy of its determination taking into account uncertainties in the data and in the inversion procedure. Our best value for the helium abundance in the photosphere is Y = 0.248. The estimated uncertainty of 0.002 is dominated by uncertainties in the inversion. This does not account for possibly larger inaccuracies in the thermodynamical data.

Original languageEnglish (US)
Pages (from-to)756-760
Number of pages5
JournalAstronomy and Astrophysics
Volume338
Issue number2
StatePublished - Oct 10 1998

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Sun: abundances
  • Sun: oscillations

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