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Atmospheric Reconnaissance of TRAPPIST-1 f with JWST NIRISS SOSS: No Evidence for the Transit Light Source Effect

  • Authors: Olivia Lim, René Doyon, Ryan J. MacDonald, Étienne Artigau, Michael Radica, Mykhaylo Plotnykov, Alexandrine L'Heureux, Caroline Piaulet-Ghorayeb, Louis-Philippe Coulombe, David Lafrenière, Thomas J. Fauchez, Martin Turbet, Diana Valencia, Loïc Albert, Laura Flagg, Björn Benneke, Neil J. Cook, Pierre-Alexis Roy, Lisa Kaltenegger, Charles Cadieux, Nicolas B. Cowan, Michaël Gillon, Romain Allart, Lisa Dang, Doug Johnstone, Stefan Pelletier, Jared Splinter, Jake Taylor

Olivia Lim et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure A1.

Comparison between the transit spectra from SOSSISSE (blue) and from exoTEDRF (orange). exoTEDRF spectra are vertically offset by 154, −19, −7, 81, and −26 ppm for Visits 1–5, respectively. Panels under each transit spectrum (black) show the differences between the two spectra, normalized by the smallest error bar between the two points in each bin. The mean normalized absolute difference is given in the top-left corner of each panel. “(F)” indicates visits with a flare near ingress.

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