All Figures

$\begin{figure} \par\includegraphics[width=14.3cm,clip]{8426fig1.eps} \end{figure}$ Figure 1: The upper section shows the new spectrum (black lines) derived from the stand-alone 2004 data and the previously published (red lines) spectrum derived from the same data. The orbital harmonics and their n*1/d sidelobes are marked by vertical solid-line and dashed-line arrows, respectively. Middle section: the Fourier amplitude spectrum calculated from the combined 2004-2005 data set processed with the alternative algorithm (black lines), compared to the published (Matthews et al. 2004: red lines) spectrum as a reference. Blue arrows mark the identified p-modes. Bottom section: an artificial spectrum calculated from the shuffled MOST 2004+2005 data with added stochastically-excited sinusoidal signals. Their frequencies are taken from Table 1. For simplicity, all signals are assigned equal amplitudes a=10 ppm and lifetimes L=7 days (red lines), and a=15 ppm, L=3 days (black lines). Blue arrows mark the identified p-modes. In all sections, the horizontal blue lines denote the 3 $\sigma$ detection limits.
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In the text

$\begin{figure} \par\includegraphics[width=6cm,clip]{8426fig2.eps}\end{figure}$ Figure 2: The numbers ( $N_{\rm i}$ ) of significant (at $3\sigma$ level) peaks in the 2004+2005 AS normalized by the corresponding numbers ( $N_{\rm s}$ ) derived from artificial data sets. The vertical bars show the $\pm$ $1\sigma$ errors of the ratios. The horizontal dashed line provides a reference level of 1 (the case when all peaks are generated by noise).
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In the text

$\begin{figure} \par\includegraphics[width=6cm,clip]{8426fig3.eps}\end{figure}$ Figure 3: The comb-response functions obtained for the central frequencies f=1.0726 mHz (full line), f=0.9158 mHz (dashed line) and f=1.6424 mHz (dashed line, offset for clarity). The tallest peak corresponds to a large separation $\Delta f=0.0540\pm 0.0001$ mHz, with the error derived from the FWHM of the peak.
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In the text

$\begin{figure} \par\includegraphics[width=6cm,clip]{8426fig2.eps}\end{figure}$	Figure 2: The numbers ( $N_{\rm i}$ ) of significant (at $3\sigma$ level) peaks in the 2004+2005 AS normalized by the corresponding numbers ( $N_{\rm s}$ ) derived from artificial data sets. The vertical bars show the $\pm$ $1\sigma$ errors of the ratios. The horizontal dashed line provides a reference level of 1 (the case when all peaks are generated by noise).
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$\begin{figure} \par\includegraphics[width=6cm,clip]{8426fig3.eps}\end{figure}$	Figure 3: The comb-response functions obtained for the central frequencies f=1.0726 mHz (full line), f=0.9158 mHz (dashed line) and f=1.6424 mHz (dashed line, offset for clarity). The tallest peak corresponds to a large separation $\Delta f=0.0540\pm 0.0001$ mHz, with the error derived from the FWHM of the peak.
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