Extended Data Fig. 1: Detection and analysis of the H2O signal in the atmosphere of HD 209458b.
From: Five carbon- and nitrogen-bearing species in a hot giant planet’s atmosphere
a, Map of the significance of the cross-correlation values as a function of the planetary radial-velocity semi-amplitude KP and the planet rest-frame velocity Vrest. b, Values of the cross-correlation function in the planet rest-frame as a function of the orbital phase and Vrest. The horizontal dashed lines denote the transit ingress and egress, while the vertical dashed line indicates the expected position of the planetary signal. c, Distribution of CCF values in-trail and out-of-trail. d, Significance of the cross-correlation values as a function of Vrest. e, Significance of the cross-correlation values as a function of KP. The dashed line indicates the peak position, while the dotted line shows the 1σ confidence interval.
