$\begin{figure} \par\includegraphics[width=7.8cm,clip]{1112fg01.ps} \end{figure}$ Figure 1: Individual light curves of DM Gem obtained at the FLWO. From left to right and from top to bottom: 2004 March 11, 14, 15 and 16.
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In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{1112fg04.ps} \end{figure}$ Figure 4: Unfiltered JKT light curves of CP Lac. Top panel: 2002 October 28 ( left) and 29 ( right). Bottom panel: 2002 October 30 ( left) and 31 ( right).
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In the text

$\begin{figure} \par\includegraphics[width=8.6cm,clip]{1112fg05.ps} \end{figure}$ Figure 5: Scargle periodogram computed from all the CP Lac light curves (nightly averages subtracted). The strong peaks in the low frequency regime of the periodogram ( $\nu < 5$ d^-1) are very likely due to the observing window.
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In the text

$\begin{figure} \par\includegraphics[width=6.6cm,clip]{1112fg06.ps} \end{figure}$ Figure 6: CP Lac light curves folded on the 0.127-d period after subtracting the long term trend (see text for details). The bottom panel shows the folded light curve after binning the data points into 20 phase intervals. A full cycle has been plotted twice for continuity.
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In the text

$\begin{figure} \par\includegraphics[width=7.8cm,clip]{1112fg07.ps} \end{figure}$ Figure 7: Unfiltered light curves of GI mon obtained with the JKT ( top panels; 2002 November 2, 4) and at the FLWO ( bottom panels; 2004 March 17-18).
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In the text

$\begin{figure} \par\includegraphics[width=8.1cm,clip]{1112fg08.ps} \end{figure}$ Figure 8: B-band light curves of V400 Per. From top to bottom: 2002 November 3-4 ( JKT), and 2003 January 3 (IAC80). A modulation with a period of $\sim$ 0.16 d can be seen in the curve with longest coverage.
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In the text

$\begin{figure} \par\includegraphics[width=8.3cm,clip]{1112fg09.ps} \end{figure}$ Figure 9: Scargle periodogram computed from all the photometric data on V400 Per after subtracting the nightly averages.
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In the text

$\begin{figure} \par\includegraphics[width=7.8cm,clip]{1112fg10.ps} \end{figure}$ Figure 10: Unfiltered light curves of CT Ser taken at the FLWO. From left to right and from top to bottom: 2004 March 9, 10, 14, 15 and 16.
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In the text

$\begin{figure} \par\includegraphics[width=8.5cm,clip]{1112fg12.ps} \end{figure}$ Figure 12: Long-term light curve of XX Tau in white light. The plot shows a clear variation of the mean brightness from night to night.
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{1112fg13.ps} \end{figure}$ Figure 13: Individual light curves of XX Tau obtained with the JKT. From left to right and from top to bottom: 2002 October 28-31 and November 2.
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In the text

$\begin{figure} \par\includegraphics[width=8.5cm,clip]{1112fg15.ps} \end{figure}$ Figure 15: All Scargle periodograms presented in the paper (with the exception of GI Mon) for easy comparison between objects. The peaks corresponding to the possible periodicities listed in Table 2 (excepting the long term variation in XX Tau) are marked with vertical lines.
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In the text

$\begin{figure} \par\includegraphics[width=7.8cm,clip]{1112fg01.ps} \end{figure}$	Figure 1: Individual light curves of DM Gem obtained at the FLWO. From left to right and from top to bottom: 2004 March 11, 14, 15 and 16.
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$\begin{figure} \par\includegraphics[width=6.5cm,clip]{1112fg02.ps} \end{figure}$	Figure 2: Top: Scargle periodogram for DM Gem. Bottom: Scargleperiodogram after removing the 0.123-d signal.
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$\begin{figure} \par\includegraphics[width=8.3cm,clip]{1112fg03.ps} \end{figure}$	Figure 3: Optical spectrum of DM Gem.
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$\begin{figure} \par\includegraphics[width=8.8cm,clip]{1112fg04.ps} \end{figure}$	Figure 4: Unfiltered JKT light curves of CP Lac. Top panel: 2002 October 28 ( left) and 29 ( right). Bottom panel: 2002 October 30 ( left) and 31 ( right).
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$\begin{figure} \par\includegraphics[width=8.6cm,clip]{1112fg05.ps} \end{figure}$	Figure 5: Scargle periodogram computed from all the CP Lac light curves (nightly averages subtracted). The strong peaks in the low frequency regime of the periodogram ( $\nu < 5$ d^-1) are very likely due to the observing window.
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$\begin{figure} \par\includegraphics[width=6.6cm,clip]{1112fg06.ps} \end{figure}$	Figure 6: CP Lac light curves folded on the 0.127-d period after subtracting the long term trend (see text for details). The bottom panel shows the folded light curve after binning the data points into 20 phase intervals. A full cycle has been plotted twice for continuity.
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$\begin{figure} \par\includegraphics[width=7.8cm,clip]{1112fg07.ps} \end{figure}$	Figure 7: Unfiltered light curves of GI mon obtained with the JKT ( top panels; 2002 November 2, 4) and at the FLWO ( bottom panels; 2004 March 17-18).
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$\begin{figure} \par\includegraphics[width=8.1cm,clip]{1112fg08.ps} \end{figure}$	Figure 8: B-band light curves of V400 Per. From top to bottom: 2002 November 3-4 ( JKT), and 2003 January 3 (IAC80). A modulation with a period of $\sim$ 0.16 d can be seen in the curve with longest coverage.
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$\begin{figure} \par\includegraphics[width=8.3cm,clip]{1112fg09.ps} \end{figure}$	Figure 9: Scargle periodogram computed from all the photometric data on V400 Per after subtracting the nightly averages.
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$\begin{figure} \par\includegraphics[width=7.8cm,clip]{1112fg10.ps} \end{figure}$	Figure 10: Unfiltered light curves of CT Ser taken at the FLWO. From left to right and from top to bottom: 2004 March 9, 10, 14, 15 and 16.
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$\begin{figure} \par\includegraphics[width=8.6cm,clip]{1112fg11.ps} \end{figure}$	Figure 11: Scargle periodogram for CT Ser after subtracting the nightly means.
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$\begin{figure} \par\includegraphics[width=8.5cm,clip]{1112fg12.ps} \end{figure}$	Figure 12: Long-term light curve of XX Tau in white light. The plot shows a clear variation of the mean brightness from night to night.
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$\begin{figure} \par\includegraphics[width=7cm,clip]{1112fg13.ps} \end{figure}$	Figure 13: Individual light curves of XX Tau obtained with the JKT. From left to right and from top to bottom: 2002 October 28-31 and November 2.
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$\begin{figure} \par\includegraphics[width=8.4cm,clip]{1112fg14.ps} \end{figure}$	Figure 14: Scargle periodogram for XX Tau.
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$\begin{figure} \par\includegraphics[width=8.5cm,clip]{1112fg15.ps} \end{figure}$	Figure 15: All Scargle periodograms presented in the paper (with the exception of GI Mon) for easy comparison between objects. The peaks corresponding to the possible periodicities listed in Table 2 (excepting the long term variation in XX Tau) are marked with vertical lines.
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