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K2-18b Does Not Meet the Standards of Evidence for Life

  • Authors: Kevin B. Stevenson, Jacob Lustig-Yaeger, E. M. May, Ravi K. Kopparapu, Thomas J. Fauchez, Jacob Haqq-Misra, Mary Anne Limbach, Edward W. Schwieterman, Kristin S. Sotzen, Shang-Min Tsai

Kevin B. Stevenson et al 2025 The Astronomical Journal 170 .

  • Provider: AAS Journals

Caption: Figure 7.

1D marginalized posterior distributions for a subset of retrieval parameters on the full NIRISS/SOSS, NIRSpec/G395H, and MIRI/LRS spectrum for different choices of MIRI pixel shifts. Despite MIRI/LRS pixel shifts resulting in different preferred gases when analyzed individually, these differences are insignificant when combined with NIR data.

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