and Mullally et al., which are inside the ZZ Ceti instability strip. With the two pulsators discovered by Castanheira et al., we have now found variability in a total of five stars previously reported ...

The results of our study predict theoretical instability strips for δ Scuti and γ Doradus stars, which overlap with each other. The strip of γ Doradus is slightly redder in colour than that of δ Scuti ...

Most of the 30 confirmed γ Doradus variables lie in a fairly tight region of the H‐R diagram on or just above the main sequence that partially overlaps the cool edge of the δ Scuti instability strip.