Results of running the residuals of the low-resolution spectroscopic light curves through a Lomb–Scargle periodogram. (a) A gallery of the residuals from the Eureka! pipeline for each spectroscopic channel. (b) The periodogram results. The color of the lines between panels a and b is for the same white light or spectroscopic channel. The residuals show uncorrelated noise at periods of <0.5 hr. The left two panels are for NRS1; the right two panels are for NRS2.