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A Comprehensive Reanalysis of K2-18 b’s JWST NIRISS+NIRSpec Transmission Spectrum

  • Authors: Stephen P. Schmidt, Ryan J. MacDonald, Shang-Min Tsai, Michael Radica, Le-Chris Wang, Eva-Maria Ahrer, Taylor J. Bell, Chloe Fisher, Daniel P. Thorngren, Nicholas Wogan, Erin M. May, Piero Ferrari, Katherine A. Bennett, Zafar Rustamkulov, Mercedes López-Morales, David K. Sing

Stephen P. Schmidt et al 2025 The Astronomical Journal 170 .

  • Provider: AAS Journals

Caption: Figure 7.

Grid of histograms showing the posteriors for CH4, CO2, and DMS for each of our retrievals. The arrangement and color map are the same as in Figure 5, with the color of the histogram representing the detection significance. While the CH4 posteriors exhibit little variance across reduction choices, there are major differences for CO2 and DMS that are indicative of a nondetection.

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