Image Details
Caption: Figure 14.
High-resolution (δ λ = 30 Å, spaced by 0.1 Å) HST WFC3 G102 data for LTT 9779 b (top) and WASP-107 b (bottom). In the latter case, the excess absorption due to the helium triplet is clearly apparent.
© 2023. The Author(s). Published by the American Astronomical Society.