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JWST TRAPPIST-1 e/b Program: Motivation and First Observations

  • Authors: Natalie H. Allen, Néstor Espinoza, V. A. Boehm, Caleb I. Cañas, Kevin B. Stevenson, Nikole K. Lewis, Ryan J. MacDonald, Brett M. Morris, Eric Agol, Knicole Colón, Hannah Diamond-Lowe, Ana Glidden, Amélie Gressier, Jingcheng Huang, Zifan Lin, Douglas Long, Dana R. Louie, Meredith A. MacGregor, Laurent Pueyo, Benjamin V. Rackham, Sukrit Ranjan, Sara Seager, Guadalupe Tovar Mendoza, Jeff A. Valenti, Daniel Valentine, Roeland P. van der Marel, Hannah R. Wakeford

Natalie H. Allen et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 13.

Stellar contamination retrieval models for all of our TRAPPIST-1 b and e observations, with the stellar contamination parameter posteriors on the right. For observation 1, the two transits show clearly different stellar contamination signatures, which is also reflected in the posteriors, with TRAPPIST-1 b dominated by a hot component postflare and TRAPPIST-1 e dominated by a cold component preflare. The other visits show common retrieved stellar contamination parameters, but overall the models provide poor fits to the observed spectra.

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