Pulsational Frequencies and Masses of Eclipsing δ Scuti Systems

摘要

We obtained radial velocity measurement for seven members of the rare class of eclipsing 3 Scuti systems. We investigate the effects of a close companion on the pulsational frequencies of the 3 Scuti star. We find an orbital period cutoff of ~ 4 days where the δ Scuti star no longer fits conventional pulsational models.