AGB Stars: Remaining Problems

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I present a subjective list of what I think are the most serious problems in the modelling of AGB stars. Because AGB stars represent the last phase of stellar evolution, they suffer from the accumulation of the effects of uncertainties in all the earlier phases. The complexity of AGB evolution adds further uncertainties specific to the evolutionary behaviour of those stars. Most of the problems are associated with mixing, specifically the boundaries of mixed regions. The nature of the "extra-mixing" remains a mystery, let alone how to model it reliably. Other problems are briefly mentioned and I finish with some hopes of making progress in the future.

Original languageEnglish
Title of host publicationProceedings of the International Astronomical Union
EditorsFranz Kerschbaum, Martin Groenewegen, Hans Oloffson
Place of PublicationCambridge UK
PublisherInternational Astronomical Union
Number of pages6
ISBN (Print)9781108471527
Publication statusPublished - Aug 2018

Publication series

NameProceedings of the International Astronomical Union
PublisherCambridge University Press
ISSN (Print)1743-9213


  • convection
  • hydrodynamics
  • stars: AGB and post-AGB
  • stars: evolution
  • stars: interiors

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