Period-luminosity diagram to illustrate the position of Aldebaran and γ Dra (star symbols) with respect to published exoplanets from our Lick survey (red circles, labeled with HIP number) and candidate exoplanets (blue circles). The small dots are stars with periods identified by the OGLE survey in the LMC; the subset of black dots are those stars identified as showing long secondary periods in the OGLE photometry. The thick solid lines show model calculations by Saio et al. (2015) for the periods of oscillatory convective modes for stars of various masses, and for a mixing length parameter of 1.2. Aldebaran and γ Dra’s periods are rather close to the predicted periods of oscillatory convective modes, especially if one were to extrapolate the models for 1.0 and 1.3 M_⊙.