Image Details
Caption: Figure A1.
Morning and evening transmission spectra obtained from Harmonica light-curve fitting to two different Eureka! reductions, outlined in Section 2.1.1. The white diamonds show the spectra obtained from our fiducial reduction, whereas the white squares include a group-level row-by-row background subtraction step to mitigate potential 1/f noise.
© 2026. The Author(s). Published by the American Astronomical Society.