The core helium flash revisited : III. from population i to population III stars

M Mocak, Simon Campbell, E Muller, K Kifonidis

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34 Citations (Scopus)


Degenerate ignition of helium in low-mass stars at the end of the red giant branch phase leads to dynamic convection in their helium cores. One-dimensional (1D) stellar modeling of this intrinsically multi-dimensional dynamic event is likely to be inadequate. Previous hydrodynamic simulations imply that the single convection zone in the helium core of metal-rich Pop I stars grows during the flash on a dynamic timescale. This may lead to hydrogen injection into the core and to a double convection zone structure as known from one-dimensional core helium flash simulations of low-mass Pop III stars.
Original languageEnglish
Pages (from-to)A114-1 - A114-15
Number of pages15
JournalAstronomy & Astrophysics
Publication statusPublished - 2010

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