The hydrodynamics of aspherical planetary nebulae. II. Numerical modelling of the early evolution.
Abstract
Initial results are presented from numerical hydrodynamic calculations of the early evolution of aspherical planetary nebulae. It is found that the interacting winds produce the customary triple discontinuity, and that the outer shock's morphology conforms with remarkable fidelity to the analytic expectations. The inner shock develops in transient fashion, due to a reflection off the equatorial belt in which the shock deflects and focuses the fast wind. The shapes of the contact discontinuity and the flow behind the leading shock indicate two qualitatively distinct patterns.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- January 1992
- Bibcode:
- 1992A&A...253..224I
- Keywords:
-
- Bubbles;
- Computational Astrophysics;
- Hydrodynamics;
- Interstellar Matter;
- Planetary Nebulae;
- Stellar Mass Ejection;
- Asphericity;
- Gas Density;
- Gray Scale;
- Mathematical Models;
- Propagation Velocity;
- Shock Wave Propagation;
- Astrophysics