Image Details
Caption: Figure 8.
The equivalent widths of the Ca I absorption feature located near 6103 Å plotted against the time of observation in relation to the predicted transit times for HIP 67522 b, HD 63433 b, and two nights for DS Tuc A b in descending order. The transit ingress and egress are marked by the vertical red lines. This feature is relatively stable within uncertainties, indicating no detections of atmospheric calcium.
© 2025. The Author(s). Published by the American Astronomical Society.