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GEMS JWST: Transmission Spectroscopy of TOI-5205b Reveals Significant Stellar Contamination and a Metal-poor Atmosphere

  • Authors: Caleb I. Cañas, Jacob Lustig-Yaeger, Shang-Min Tsai, Simon Müller, Ravit Helled, Shubham Kanodia, Dana R. Louie, Giannina Guzmán Caloca, Peter Gao, Jessica Libby-Roberts, Kevin K. Hardegree-Ullman, Knicole D. Colón, Ian Czekala, Megan Delamer, Te Han, Andrea S.J. Lin, Suvrath Mahadevan, Erin M. May, Joe P. Ninan, Anjali A. A. Piette, Guðmundur Stefánsson, Kevin B. Stevenson, Johanna Teske, Nicole L. Wallack

Caleb I. Cañas et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 18.

Top: atmospheric retrievals, assuming equilibrium chemistry, on the coadded ExoTiC-JEDI spectrum (black circles). The best-fitting models for POSEIDON (yellow and green lines), PLATON (red line), and TauREx (blue line) are plotted along with the one−three model posteriors (shaded blue or red regions). Bottom: the residuals to the best-fitting solution for POSEIDON (yellow and green circles), PLATON (red circles), and TauREx (blue circles). The ±3σ region is shaded for reference.

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