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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 13.

Same as Figure 7 but for DS Tuc A b for the two different transits observed. Top is 2019 August 19 and bottom is 2019 October 7 UT. The orange lines indicate the bounds of integration for the equivalent width calculation (Figure 12). A feature is present, but it shows excess emission (weaker absorption)—an exosphere would manifest as excess absorption.

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