Stothers 1969

Stothers, R., 1969: On the pulsation hypothesis for massive red supergiants. Astrophys. J., 156, 541-547.

The fundamental mode of radial pulsation has been calculated for convective envelopes in adiabatic equilibrium including radiation pressure. The theoretical Q-values are compared with the observational Q-values of variable M supergiants in galactic associations. The variability of these massive red supergiants can be explained on the pulsation hypothesis if a suitable readjustment of some of the observed periods is made. Pulsation seems to be suggested by (1) the cyclical variations in magnitude, spectrum, and radius in individual stars, (2) a period-luminosity relation, and (3) a period-spectrum relation for the group of stars.

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Stothers, R.: On the pulsation hypothesis for massive red supergiants, Astrophys. J., 156, 541-547, 1969.

Stothers, R. (1969), On the pulsation hypothesis for massive red supergiants, Astrophys. J., 156, 541-547.

Stothers, R., 1969: On the pulsation hypothesis for massive red supergiants. Astrophys. J., 156, 541-547.

Stothers, R. 1969, Astrophys. J., 156, 541.

Stothers R. On the pulsation hypothesis for massive red supergiants, Astrophys J 1969;156:541-547.

R. Stothers, Astrophys. J. 156, 541-547 (1969).