1 citations · 2 across the 3 of their papers we have counts for
15 papers
On the Evolutionary Status of Extremely Hot Helium Stars - are O(He) Stars Successors of RCrB Stars?
Thomas Rauch, Elke Reiff, Klaus Werner +3
95% of all stars end their lives as white dwarfs. About 20% of the hot post-AGB stars are hydrogen deficient. Most of these are the result of a late helium-shell flash, but the evo…
Mixing and the s-process in rotating AGB stars
Falk Herwig, Norbert Langer, Maria Lugaro
We model the nucleosynthesis during a radiative interpulse phase of a rotating 3Msun Asymptotic Giant Branch (AGB) star. We find an enhanced production of the neutron source specie…
CNO in Low- and Zero-Metallicity AGB Stars
Falk Herwig
The oldest stars hide information about the chemical evolution of the early universe. In this contect new models of the AGB stellar evolution phase at very low and zero metallicity…
Could SiC A+B grains have originated in a post-AGB thermal pulse?
Falk Herwig, Sachiko Amari, Maria Lugaro +1
The carbon and nitrogen isotopic ratios of pre-solar SiC grains of type A+B suggest a proton-limited nucleosynthetic process as encountered, for instance, during the very late ther…
Modeling the evolution of Sakurai's object
Falk Herwig
Sakurai's object is a born again AGB star of the very late thermal pulse flavor. In this contribution I will discuss new models of stellar evolution and nucleosynthesis models of t…
Formation of the Neutron Donor C13 in AGB Stars by Overshoot and Rotation
Falk Herwig, Norbert Langer
(abridged) Observations clearly show that low-mass AGB stars can provide a nucleosynthesis site of the s-process. Recent stellar evolution models indicate that radiative burning of…