- The position of the array of the dimensionless frequencies of LPV variations on the diagram sigma-Teff
- The region of the non-radial pusations of SPB stars is shaded. Points mark the region of non-radial pulsations of the beta Cep stars.
- Diagram is taken from Balona & Dziembowski, MNRAS, 309, 221-232 (1999) for MS stars with 1.5 < M/Mo < 40, X=0.70, Z=0.02 for 0.05<sigma<6
- The optimal value of
l =4-8
