Kepler field pulsating A-F stars

A catalogue of {delta} Scuti and {gamma} Doradus stars is presented. The problem of low frequencies in {delta} Sct stars, which occurs in over 98 percent of these stars, is discussed.

Gaia DR2 parallaxes were used to obtain precise luminosities, enabling the instability strips of the two classes of variable to be precisely defined. Surprisingly, it turns out that the instability region of the {gamma} Dor stars is entirely within the {delta} Sct instability strip. Thus, {gamma}Dor stars should not be considered a separate class of variable.