15 papers
Multiple ring nebulae around blue supergiants
S. M. Chita, N. Langer, A. J. van Marle +2
In the course of the life of a massive star, wind-wind interaction can give rise to the formation of circumstellar nebulae which are both predicted and observed in the nature. We p…
Jets as diagnostics of the circumstellar medium and the explosion energetics of supernovae: the case of Cas A
K. M. Schure, J. Vink, G. García Segura +1
We present hydrodynamical models for the Cassiopeia A (Cas A) supernova remnant and its observed jet / counter-jet system. We include the evolution of the progenitor's circumstella…
The planetary nebula NGC 1360, a test case of magnetic collimation and evolution after the fast wind
M. T. Garcia-Diaz, J. A. López, G. Garcia-Segura +2
The central star of this nebula has an observed intense magnetic field and the fast wind is no longer present, indicating that a back flow process has probably developed. Long-slit…
The circumstellar medium around a rapidly rotating, chemically homogeneously evolving, possible gamma-ray burst progenitor
Allard Jan van Marle, Norbert Langer, Sung-Chul Yoon +1
Rapidly rotating, chemically homogeneously evolving massive stars are considered to be progenitors of long gamma-ray bursts. We present numerical simulations of the evolution of th…
Constraints on gamma-ray burst and supernova progenitors through circumstellar absorption lines. (II): Post-LBV Wolf-Rayet stars
A. J. van Marle, N. Langer, G. garcia-Segura
Van Marle et al. (2005) showed that circumstellar absorption lines in early Type Ib/c supernova and gamma-ray burst afterglow spectra may reveal the progenitor evolution of the exp…
The Dynamical Evolution of Planetary Nebulae After the Fast Wind
G. Garcia-Segura, J. A. Lopez, W. Steffen +2
In this paper we explore the dynamics of ionization bounded planetary nebulae after the termination of the fast stellar wind. When the stellar wind becomes negligible, the hot, sho…