On an Early – Post-AGB Instability [SSA]

http://arxiv.org/abs/2303.11374


Dynamical stellar-evolution modeling through the AGB phase reveals that radial pulsations with very fast-growing amplitudes develop if the luminosity to mass ratio of stars with tenuous envelopes exceeds a critical limit. An instability going nonlinear already after a few pulsation cycles might qualify as a source of the superwind – postulated to shed a substantial part of a star’s envelope over a very short time – of hitherto persistently mysterious nature.

Read this paper on arXiv…

A. Gautschy
Wed, 22 Mar 23
59/68

Comments: 15 pages, 12 figures