Extended Data Fig. 5: Signals of Cr⁺, Sc⁺, Na, Ni and Ca classified as tentative.

All of these species have previously been observed in other ultra-hot Jupiters^19,25. The shaded region indicates the expected 1σ uncertainty. Dashed lines show expected signal strengths, obtained by injecting and recovering the signatures of model spectra, assuming isothermal atmospheres at 2,000 K (red) and 3,000 K (orange) respectively.