8 papers
Cosmic Rays VIII
A. S. Popescu, P. L. Biermann, N. Langer
This paper has been withdrawn.
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…
The evolution of main sequence star + white dwarf binary systems towards Type~Ia supernovae
N. Langer, A. Deutschmann, S. Wellstein +1
Close binaries consisting of a main sequence star and a white dwarf are considered as candidates for Type~Ia supernova progenitors. We present selfconsistent calculations of the ti…
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…
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…