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On a Physical Mechanism for Extra-Mixing in Globular Cluster Red Giants

Published online by Cambridge University Press:  30 March 2016

Pavel A. Denissenkov  and
Christopher A. Tout
Pavel A. Denissenkov
Affiliation:
Astronomical Institute, St. Petersburg University, Bibliotechnaya Pl. 2, Petrodvorets, 198504 St. Petersburg, Russia
Christopher A. Tout
Affiliation:
Institute of Astronomy, Madingley Rd., Cambridge CB3 0HA, U.K.

Abstract

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For the first time we propose a real physical mechanism for extra-mixing in red giants which can quantitatively interpret all the known star-to-star abundance variations in globular clusters. This is Zahn’s mechanism (Zahn 1992; Maeder & Zahn 1998). It considers extra-mixing in a radiative zone of a rotating star as a result of joint operation of meridional circulation and turbulent diffusion.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 12: Highlights of Astronomy. As presented at the XXIVth General Assembly of the IAU, 2000 , 2002 , pp. 289 - 291
Copyright
Copyright © Astronomical Society of Pacific 2002

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