Duration of totality

Forums Variable Stars VV Cep eclipse paper in JBAA Duration of totality

Robin Leadbeater

Yes I agree. If the continuous brightness variations are  due to radial pulsations of the M star, these would produce changes in the effective radius (and opacity?)  of the M star. These could could asymmetrically shift the mid eclipse point dependent on their timing. (is a 50% increase in effective radius due to pulsations feasible?)