A new method for determining the helium abundance in the solar atmosphere /Invited Review/

Details A new method for determining the helium abundance in the solar atmosphere /Invited Review/ A new method for determining the helium abundance in the solar atmosphere /Invited Review/

Jan 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...82..205i&link_type=abstract

(International Astronomical Union and Akademiia Nauk SSSR, Colloquium on Problems of Solar and Stellar Oscillations, 66th, Nauch

Physics

4

Abundance, Helium, Photosphere, Solar Atmosphere, Atmospheric Temperature, Molecular Weight, Solar Neutrinos, Solar Wind

Scientific paper

It is suggested that the Claverie et al. (1981) observations of a cutoff frequency in the acoustic modes of the sun can help to determine the mean molecular weight, and therefore the He abundance, in the visible layers of the solar atmosphere. Assuming a minimum photospheric temperature of 4400 K + or - 200 K, an He abundance of 0.42 + or - 0.04 is obtained. This is consistent with the result of 0.38 obtained by Unsold (1969).

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