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A New Method for determining the Helium Abundance in the Solar Atmosphere*

Published online by Cambridge University Press:  12 April 2016

G. R. Isaak
G. R. Isaak*
Affiliation:
Department of Physics, University of Birmingham, P.O. Box 363, Birmingham, B15 2TT, U.K.

Abstract

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Recent observations of a cut-off frequency in the acoustic modes of the Sun (Claverie et al., 1981b) should help determine the mean molecular weight and, thereby, the helium abundance in the visible layers of the solar atmosphere. A first preliminary result of Y = 0.42 ± 0.04 is obtained for an assumed minimum photospheric temperature of 4400 K ± 200 K.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 66: Problems of Solar and Stellar Oscillations , 1983 , pp. 205 - 207
Copyright
Copyright © Reidel 1983

Footnotes

*

Proceedings of the 66th IAU Colloquium: Problems in Solar and Stellar Oscillations, held at the Crimean Astrophysical Observatory, U.S.S.R., 1–5 September, 1981.

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