patrick gaulme edited figures/KIC_9246715_echelle_bis/caption.tex  over 8 years ago

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\label{fig:echelle} \'Echelle diagram of the power density spectrum presented in Figure \ref{fig:seismo}. Darker regions correspond to larger peaks in power density. The power density spectrum is smoothed by a box car over nine bins then cut into 8.31-$\mu$Hz chunks, and each of them is then stacked on top of its lower-frequency neighbor. This representation allows for visual identification of the modes. Orange plain lines show modes distribution for degrees $l = 0$, $1$, and $2$, according to the red-giant universal pattern \citep{moss11} \citep{mos11}  for $\Delta\nu = 8.31\ \mu$Hz. Vermilion dashed lines indicate the same for a star with $\Delta\nu = 8.60\ \mu$Hz. %The left vertical alignment of peaks ($x$-axis between 0.5 and 4 $\mu$Hz) corresponds to angular (spherical) degree $l=1$, where we note the presence of mixed modes. The right alignment (4--8 $\mu$Hz) corresponds to $l=2$ on the left and $l=0$ on the right. ADD DASHED DIAGONAL/CURVED LINES; THIS POSSIBLE SIGNATURE OF A SECOND OSCILLATING STAR IS WEAK AND DISCUSSED FURTHER IN SECTION \ref{search}.