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Paper: On Thermal Dis-Equilibrium in Super-Eddington Stars
Volume: 332, The Fate of the Most Massive Stars
Page: 200
Authors: Gayley, K.
Abstract: The purpose of this contribution is to stimulate general thinking about LBV mass-loss timescales as the expected response to thermal disequilibrium in stars of roughly 100 solar masses. The disequilibrium appears when the star becomes super-Eddington, defined as having a radiative force that exceeds gravity at heights above where the convection is already maximal, i.e., where turnover speeds go transsonic. In this case, the mass-loss timescales may be governed by simple order-unity scaling arguments, which require for self-consistency the appearance of clumpy porosity in the surface layers. The essential ansatz is that the average mass-loss timescale must be of order the thermal adjustment time.
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