307 citations · 1k across the 27 of their papers we have counts for
19 papers · 1 filter
Morphologies of the Nebulae around "born-again" Central Stars of Planetary Nebulae
S. Kimeswenger, A. A. Zijlstra, P. A. M. van Hoof +5
While in the past spherodicity was assumed, and still is used in modeling of most nebulae, we know now that only a small number of planetary nebulae (PNe) are really spherical or a…
The Formation of Hydrogen Deficient Stars through Common Envelope Evolution
Steven Diehl, Chris Fryer, Falk Herwig
We present preliminary results from Smooth Particle Hydrodynamics (SPH) simulations of common envelope evolution. We qualitatively compare the interaction between a 0.9M red giant…
Convective and non-convective mixing in AGB stars
Falk Herwig, Bernd Freytag, Tyler Fuchs +5
We review the current state of modeling convective mixing in AGB stars. The focus is on results obtained through multi-dimensional hydrodynamic simulations of AGB convection, both…
The Second Stars
Falk Herwig
The ejecta of the first probably very massive stars polluted the Big Bang primordial element mix with the first heavier elements. The resulting ultra metal-poor abundance distribut…
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…