Moving periodogram for GJ 173. The top two panels show the same combined RV data subtracted by the best-fit MA red noise. The bottom-left panel shows the BFPs as a function of period and time window with a size of about 2000 days (double the width of the gap between the left y-axis and the left edge of the color-coded BFPs). The bottom-right panel is a zoom-in of the bottom-left panel to optimize the visualization of the signal. The annual aliases of the 47.3 day signal at periods of 54 and 42 days are visible and coded in red.