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Beryllium in the Sun: Re-Measurement and Implications

Published online by Cambridge University Press:  25 May 2016

Suchitra C. Balachandran*
Affiliation:
Department of Astronomy, University of Maryland, College Park MD 20742, USA

Abstract

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The solar beryllium abundance is important because it provides a constraint on the depth to which mixing has occurred below the surface convective zone. Unlike helioseismology which only maps the present-day Sun, the solar beryllium abundance provides an integrated picture of mixing over the entire history of the Sun. In this review I outline the logic involving the ‘missing UV opacity’ that required that the solar beryllium abundance be re-determined. A brief summary of the empirical process of estimating the “missing UV opacity” is given along with a confirmation based on a recent re-calculation of the Fe I bound-free opacity. The addition of this opacity resulted in our finding that the solar beryllium abundance was meteoritic. The implications of this result in the context of mixing in solar-type stars is discussed.

Type
5. Abundance of Beryllium and Boron
Copyright
Copyright © Astronomical Society of the Pacific 2000 

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