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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 3.

Spectroscopic light curves and fit models with the corresponding residuals from the PACMAN reduction. The data are shown with alternating light and dark colors for visual clarity. Solid black lines at zero were added in the residuals’ panel for reference.

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