Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-05-20
Astron.Astrophys.405:1075-1086,2003
Astronomy and Astrophysics
Astrophysics
12 pages, 13 figures, accepted by A&A
Scientific paper
10.1051/0004-6361:20030696
We present new numerical hydrodynamical modelling of the evolution of Asymptotic Giant Branch (AGB) mass loss fluctuations during the post-AGB/Planetary Nebula phase. These models show that after ionization, the observable effects of the mass loss fluctuations disappear in a few thousand years, consistent with the fact that only few PNe have been found to be surrounded by `rings'. We derive the observational characteristics of these rings, and compare them to reported observations of the rings around NGC 6543, finding a good match of emission properties and line shapes. We predict small variations in the observable electron temperatures.
Meijerink Rowin
Mellema Garrelt
Simis Yvonne
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