The pulsation of EE Camelopardalis

EE Cam is a previously little-studied delta Scuti pulsator with amplitudes between those of the HADS (high-amplitude delta Scuti star) group and average low-amplitude pulsators. Since the size of stellar rotation determines both which pulsation modes are selected by the star as well as their amplitudes, this star offers a great opportunity to examine the astrophysical connections. Extensive photometric measurements covering several months were carried out. Fifteen significant pulsation frequencies were extracted. The dominant mode at 4.934 cycles day(-1) was identified as a radial mode by examining the phase shifts at different wavelengths. Medium-dispersion spectra yielded a v sin i value of 40 +/- 3 km s(-1). This shows that EE Cam belongs to the important transition region between HADSs and normal delta Scuti stars.