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On the formation of hydrogen-deficient post-AGB stars
F. Herwig, T. Bloecker, N. Langer +1
We present an evolutionary sequence of a low mass star from the Asymptotic Giant Branch (AGB) through its post-AGB stage, during which its surface chemical composition changes from…
Mixing and nucleosynthesis in rotating TP-AGB stars
N. Langer, A. Heger, S. Wellstein +1
We present the first evolutionary models of intermediate mass stars up to their thermal pulses which include effects of rotation on the stellar structure as well as rotationally in…
Giant Outbursts of Luminous Blue Variables and the Formation of the Homunculus Nebula Around eta Carinae
Norbert Langer, Guillermo Garcia-Segura, Mordecai-Mark Mac Low
The observed giant outbursts of Luminous Blue Variables (LBVs) may occur when these massive stars approach their Eddington limits. When this happens, they must reach a point where…