A new method for determining the helium abundance in the solar atmosphere |
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| Authors: | G R Isaak |
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| Institution: | 1. Department of Physics, University of Birmingham, P.O. Box 363, B15 2TT, Birmingham, UK
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| Abstract: | 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. |
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