The post-AGB evolution of AGB mass loss variations

Abstract

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.

12 pages, 13 figures, accepted by A&A

References in corpus (2)

• Origin of quasi-periodic shells in dust forming AGB winds
• Stellar wind bubbles around WR and [WR] stars

Cited by in corpus (5)

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• Rings and Halos in the Mid-Infrared: The Planetary Nebulae NGC 7354 and NGC 3242
• Rings and arcs around evolved stars. II. The Carbon Star AFGL 3068 and the Planetary Nebulae NGC 6543, NGC 7009 and NGC 7027
• Evidence for a binary origin of a central compact object
• Photospheric Opacity and Over-Expanded Envelopes of Asymptotic Giant Branch Stars