Publication Abstracts
Stothers 1992
, 1992: Upper limit to the mass of pulsationally stable stars with uniform chemical composition. Astrophys. J., 392, 706-709, doi:10.1086/171472.
Nuclear-energized pulsational instability is a well-known feature of models of chemically homogeneous stars above a critical mass. With the new Rogers-Iglesias opacities, the instability occurs above 120-150 M☉ for normal Galactic Population I chemical compositions, and above ∼90 M☉ for stars in metal-poor environments like the outer Galaxy and the Small Magellanic Cloud. Models of homogeneous helium-burning stars are unstable above masses of 19 and 14 M☉, respectively. These significant increases of the critical masses, in the normal metallicity cases, over the values derived previously with the Los Alamos opacities can explain the stability of the brightest O-type stars, but they do not exclude the possibility that the most luminous hydrogen-deficient Wolf-Rayet stars are experiencing this type of instability.
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BibTeX Citation
@article{st08600k,
author={Stothers, R. B.},
title={Upper limit to the mass of pulsationally stable stars with uniform chemical composition},
year={1992},
journal={Astrophys. J.},
volume={392},
pages={706--709},
doi={10.1086/171472},
}
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RIS Citation
TY - JOUR ID - st08600k AU - Stothers, R. B. PY - 1992 TI - Upper limit to the mass of pulsationally stable stars with uniform chemical composition JA - Astrophys. J. VL - 392 SP - 706 EP - 709 DO - 10.1086/171472 ER -
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