The solar structure and the low L five-minute oscillation. I

Details The solar structure and the low L five-minute oscillation. I The solar structure and the low L five-minute oscillation. I

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...110...50g&link_type=abstract

Astronomy and Astrophysics, vol. 110, no. 1, June 1982, p. 50-53.

Astronomy and Astrophysics

Astrophysics

11

Chemical Composition, Solar Oblateness, Solar Oscillations, Solar Rotation, Helium, Hydrogen

Scientific paper

The parameters X, Z, and the ratio of mixing length to pressure scale height, have been obtained by fitting the theoretical frequencies to the values observed by Claverie et al. (1981). The chemical composition obtained is in very good agreement with previously published values, and favor a N(He)/N(H) ratio on the order of 0.06. The mixing length is however larger than predicted by standard solar models as already found from the high l 5 min oscillations. The measurement of the rotational splitting provides stronger constraints on possible rotational laws than the solar oblateness. All laws compatible with the splitting predict an oblateness in good agreement with the Hill and Stebbins (1975) value. The splitting favors slow or moderately fast internal rotation and supports the suggestion by Endal and Sofia (1981) that the circulation region is rotating with nearly the same velocity as the convective envelope.

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