A SEARCH FOR ROTATIONAL PHOTOMETRIC VARIABILITY IN THE PULSATING AP STAR HD-119027

We present differential mean-light photometry of the rapidly oscillati ng Ap star HD 119027, acquired on 11 nights in 1991 and 34 nights in 1 997. These data constrain the semi-amplitude of rotational photometric variability in HD 119027 to under 3 mmag for periods in the range P = 1 d to 5 months, implying that certain frequencies detected in previo us pulsation studies of HD 119027 cannot be rotational sidelobes. Slig ht variations in the mean differential magnitudes of the 1991 and 1997 data suggest that the period range P=6 months to several years should be explored in a long-term monitoring programme.