Publication Abstracts

Stothers 2003

Stothers, R.B., 2003: Radiative instability in stellar envelopes. Astrophys. J., 599, L103-L105, doi:10.1086/381192.

A general analytic criterion for radiative instability in the envelope of a nonexplosive star is derived, based on a generalization of the Eddington limit for the star's luminosity, an expression for the stationary mass-loss acceleration, and an assumed universality of the critical mean density of the envelope. The derived criterion has been formulated as the minimum rate of mass loss needed to achieve a super-Eddington state. Expressed as a simple function of luminosity and effective temperature, it is applied to luminous blue variables (LBVs), Wolf-Rayet stars, and ordinary B-type supergiants. Assuming that the brightest LBVs as well as most of the Wolf-Rayet stars are postmain-sequence objects, these objects must have radiatively unstable envelopes.

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BibTeX Citation

  author={Stothers, R. B.},
  title={Radiative instability in stellar envelopes},
  journal={Astrophys. J.},

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RIS Citation

ID  - st04900a
AU  - Stothers, R. B.
PY  - 2003
TI  - Radiative instability in stellar envelopes
JA  - Astrophys. J.
VL  - 599
SP  - L103
EP  - L105
DO  - 10.1086/381192
ER  -

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