Theoretical model of photometric variability due to a non-radial pulsation (animated GIF - 2.4Mb).
Blue = higher temperature; Red = lower temperature
can manifest themselves through multi-period photometric
variability by modulating the stellar surface temperature.
I developed a code NORSTEP that calculates photometric
curves based on the spherical harmonics of a given non-radial
pulsation. The modeling was successfully applied to the star 53
Persei (Vinkovic D. & Pavlovski K., Proceedings of the ESO Workshop
"Cyclical Variability in Stellar Winds", Springer-Verlag, 1998,