A search for multiple periodicities in three delta Scuti stars

Abstract

New photoelectric photometry and period searches are presented for three northern delta Scuti variables: LT Vulpeculae, V1208 Aquilae, and 63 Herculis. In past work, two of these three stars were shown to exhibit single-period, high-frequency, low-amplitude variations, with V1208 Aql pulsating with at least two periods. Swingler’s (1985) modification of the Jurkevich (1971) period search technique has been used to determine that the three program stars appear to be pulsating with at least four, three and three periods, respectively.