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The SPACE Program. II. No Discernible Spectral Features in the Transmission Spectrum of the Sub-Neptune HD 191939 b Observed with HST/WFC3

  • Authors: Cyril Gapp, Lorena Acuña-Aguirre, Reza Ashtari, Mario Damiano, Thomas M. Evans-Soma, David J. Wilson, Kevin France, Laura Kreidberg, Drake Deming, Qiushi Chris Tian, Seth Redfield, Ian J.M. Crossfield, K. Angelique Kahle, Tansu Daylan, Kevin Heng, Bertram Bitsch, James S. Jenkins, Keivan G. Stassun, Antonio García Muñoz, Ludmila Carone

Cyril Gapp et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 12.

Posterior probabilities of the equilibrium chemistry retrieval on the PACMAN reduction considering all visits. Solid blue lines indicate the samples’ medians, and dashed black lines show the 16th and 84th percentiles.

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