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The solar model problem resurrected

M. Asplund·N. Grevesse·M. Guedel·A. J. Sauval
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Abstract

The new solar composition, when applied to compute a model of the Sun, leads to serious disagreement between the predictions of the model and the observations obtained by helioseismology. New measurements of the coronal Ne/O abundance ratio in nearby stars using X-ray spectra typically find high values of Ne/O=0.4 rather than 0.15 normally adopted for the Sun. Drake & Testa (2005) suggest that this high Ne/O ratio is appropriate also for the Sun, which would bring the solar models back in agreement with the helioseismological observations. Here we present arguments why the high Ne/O ratio is unlikely to be applicable to the Sun.

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M. Asplund, N. Grevesse, M. Guedel, A. J. Sauval. 2005-10-13. The solar model problem resurrected. https://arxiv.org/abs/astro-ph/0510377

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