Table 1: Amplitudes and phases of the modulations derived from the optical and ultra-violet light curves.
Mode Period Frequency $A_{\rm L}$ $\Phi_{\rm L}$
  (s) ($\mu$Hz) (%) ()
F1 215.20 4646.9 2.01 $\pm$ 0.13 -153 $\pm$ 4
F2 271.95 3677.1 0.63 $\pm$ 0.13 107 $\pm$ 12
(F2 270.46 3697.5 0.58 $\pm$ 0.13 $\;$109 $\pm$ 13)
F3 304.05 3288.9 0.96 $\pm$ 0.13 -55 $\pm$ 8
F1 215.20 4646.9 2.37 $\pm$ 0.23 -152 $\pm$ 6
F2 271.95 3677.1 0.99 $\pm$ 0.23 94 $\pm$ 13
(F2 270.46 3697.5 0.77 $\pm$ 0.23 $\;$96 $\pm$ 17)
F3 304.05 3288.9 1.07 $\pm$ 0.23 -50 $\pm$ 12
F1 215.20 4646.9 2.50 $\pm$ 0.37 -153 $\pm$ 8
F2 271.95 3677.1 1.22 $\pm$ 0.37 97 $\pm$ 17
(F2 270.46 3697.5 0.83 $\pm$ 0.37 $\;$96 $\pm$ 26)
F3 304.05 3288.9 1.08 $\pm$ 0.37 -39 $\pm$ 20
F1 215.20 4646.9 4.56 $\pm$ 0.33 -55 $\pm$ 4
F2 271.95 3677.1 1.61 $\pm$ 0.33 -20 $\pm$ 12
(F2 270.46 3697.5 1.72 $\pm$ 0.33 $\;$-16 $\pm$ 11)
F3 304.05 3288.9 2.01 $\pm$ 0.33 -20 $\pm$ 9
F1 215.20 4646.9 5.04 $\pm$ 0.32 152 $\pm$ 4
F2 271.95 3677.1 2.00 $\pm$ 0.32 -128 $\pm$ 9
(F2 270.46 3697.5 2.27 $\pm$ 0.32 $\;$-124 $\pm$ 8)
F3 304.05 3288.9 1.19 $\pm$ 0.33 -157 $\pm$ 16
F1 215.20 4646.9 9.51 $\pm$ 1.34 -128 $\pm$ 8
F2 271.95 3677.1 1.43 $\pm$ 1.34 -66 $\pm$ 54
(F2 270.46 3697.5 1.25 $\pm$ 1.34 $\;$-95 $\pm$ 62)
F3 304.05 3288.9 3.12 $\pm$ 1.34 -153 $\pm$ 24
Notes. $A_{\rm L}$ and $\Phi_{\rm L}$ are the amplitudes and phases obtained by iterative least squares fitting of the light curves. The periods have been fixed to those determined from WET data (Kepler et al. 1995) and with a precision higher than that listed above: F1 = 215.1968 s, F2 = 271.95 s, F3 = 304.052 s. As such, in the ultra-violet, the measurements above represent limits to the amplitudes at a given frequency when the signal is not clearly detected (see Fig. 3). Also shown in parenthesis, are the values obtained for the 270.46 s periodicity which was assigned a lower probability of being a false peak by Kepler et al. (1995). Limits for 119.84 s (8344.7 $\mu$Hz), a potential real mode reported by Kepler et al. (1995) are: v1 $4.08\pm1.34$% v3 $0.72\pm0.33$%, v4 $0.94\pm0.32$%; optical (5500 Å): $0.09\pm0.11$%. The "v'' numbers merely denote abbreviated run numbers.

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