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Fig. 2


Top panel: photon noise in ppm as a function of time of the photometric VIRGO/SPM observations (color-coded BLUE, GREEN, and RED channels, and composite in dotted purple). Bottom panel: same as the top panel but for the radial velocity GOLF observations in m s-1. The vertical dashed lines indicate the GOLF red-wing period from mid-1998 to the end of 2002.

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