On an Early - Post-AGB Instability
Solar and Stellar Astrophysics
2023-03-22 v1
Abstract
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.
Cite
@article{arxiv.2303.11374,
title = {On an Early - Post-AGB Instability},
author = {Alfred Gautschy},
journal= {arXiv preprint arXiv:2303.11374},
year = {2023}
}
Comments
15 pages, 12 figures