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arXiv · 1811.06906

The loss of large amplitude pulsations at the end of AGB evolution

Dieter Engels·Sandra Etoka·Eric Gerard
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Abstract

Since 2013 we are performing with the Nancay Radio Telescope (NRT) a monitoring program of >100 Galactic disk OH/IR stars, having bright 1612-MHz OH maser emission. The variations of the maser emission are used to probe the underlying stellar variability. We wish to understand how the large-amplitude variations are lost during the AGB - post-AGB transition. The fading out of pulsations with steadily declining amplitudes seems to be a viable process.

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Dieter Engels, Sandra Etoka, Eric Gerard. 2018-11-16. The loss of large amplitude pulsations at the end of AGB evolution. https://arxiv.org/abs/1811.06906

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