KPD 0629–0016, a slowly pulsating hot subdwarf star
Abstract
The results of nine CCD photometric observing runs on KPD 0629–0016 are presented. During
six of the runs measurements were obtained alternately through B and V filters. Four periodicities,
for which there is good agreement between the frequencies identified in the B and V
data, were extracted: these lie in the range 46–81 min. A fifth lower frequency appears to be
definitely present, but is very uncertain due to aliasing. The ratios of the mode amplitudes
measured in B and V, and the phase differences between variations in the two colours, are
compatible with pulsation theory.