Bibcode
Christensen-Dalsgaard, J.; Pérez Hernández, F.
Bibliographical reference
Challenges to Theories of the Structure of Moderate-Mass Stars, Proceedings of a Conference held at the Institute for Theoretical Physics, University of California, Stnta Barbara, CA, USA, 19-22 June 1990. Edited by D. Gough and J. Toomre. Springer-Verlag Berlin Heidelberg New York. Also Lecture Notes in Physics, volume 388, 1991, p.43
Advertised on:
0
1991
Citations
30
Refereed citations
27
Description
We consider the effect of uncertainties in solar models on the p-mode
frequencies of moderate degree (40 l 100). This is done by means of an
asymptotic relation that provides a simple way of estimating differences
in p-mode frequencies of two solar models. Also, we have investigated
the possibility for separating different contributions to the difference
between the models, on the basis of the frequencies of the modes.
Analysis of observed frequencies suggests that the solar envelope helium
abundance Y s is close to 0.25; however, this result may be sensitive to
other uncertainties in the solar models.