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Ever Elusive Exospheres: One Probable Detection and Two Nondetections of Hα Transits in Young Systems

  • Authors: Reilly P. Milburn, Andrew W. Mann, Keighley Rockcliffe, Erin E. Flowers, Alexis Heitzmann, Benjamin T. Montet, George Zhou, Madyson G. Barber

Reilly P. Milburn et al 2025 The Astronomical Journal 170 .

  • Provider: AAS Journals

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.

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