http://arxiv.org/abs/1801.04890
A linear stability analysis of models for evolved primordial stars with masses between 150 and 250 M${\odot}$ is presented. Strange mode instabilities with growth rates in the dynamical range are identified for stellar models with effective temperatures below log T${\rm{eff}}$ = 4.5. For selected models the final fate of the instabilities is determined by numerical simulation of their evolution into the non-linear regime. As a result, the instabilities lead to finite amplitude pulsations. Associated with them are acoustic energy fluxes capable of driving stellar winds with mass-loss rates in the range between 7.7 $\times$ 10$^{-7}$ and 3.5 $\times$ 10$^{-4}$ M$_{\odot}$ yr$^{-1}$.
A. Yadav, S. Biavatti and W. Glatzel
Tue, 16 Jan 18
10/79
Comments: 11 pages, 14 figures, 1 table, Accepted for publication in MNRAS
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