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The role of convection in AGB modeling

Published online by Cambridge University Press:  01 August 2006

Paolo Ventura
Paolo Ventura*
Affiliation:
INAF - Osservatorio Astronomico di Roma Via Frascati 33, 00040 MontePorzio Catone (RM), Italy email: ventura@oa-roma.inaf.it
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Abstract

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The modeling of the Asymptotic Giant Branch phase is made highly uncertain by some still unsolved issues related to the input macro-physics used to calculate the stellar evolution, namely mass loss, nuclear cross sections, overshooting and convective modeling. We show that in the massive intermediate mass models, which achieve at the bottom of their convective envelope temperatures sufficiently high to favour an advanced nucleosynthesis, the treatment of convection plays a major role in determining the physical and chemical evolution of the stellar models during this evolutionary phase.

Keywords

Convectionstars: evolution: AGB
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S239: Convection in Astrophysics , August 2006 , pp. 258 - 265
Copyright
Copyright © International Astronomical Union 2007

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