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Heat Reveals What Clouds Conceal: Global Carbon and Longitudinally Asymmetric Chemistry on LTT 9779 b

  • Authors: Reza Ashtari, Sean Collins, Jared Splinter, Kevin B. Stevenson, Vivien Parmentier, Jonathan Brande, Suman Saha, Sarah Stamer, Ian J. M. Crossfield, James S. Jenkins, K. Angelique Kahle, Joshua D. Lothringer, Nishil Mehta, Nicolas B. Cowan, Diana Dragomir, Laura Kreidberg, Mercedes López-Morales, Thomas M. Evans-Soma, Emma Esparza-Borges, Megan Weiner Mansfield, Hayley Beltz, Tansu Daylan, Olivia Venot, Jason Pero, Xi Zhang

Reza Ashtari et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 7.

χ2 contour plots showing slices of the parameter space from fitting the NIRSpec effective temperature observations at 20 orbital phases (left panel of Figure C1) to the Bell_EBM grid. The red stars are the locations of the best-fit model with reduced χ2 = 0.13. Each panel shows a 2D slice of the 3D parameter space, holding one parameter fixed at its best-fit value. This analysis predicts best-fit values of AB = 0.325, vwind = 0.1 km s−1, and P0 = 0.398 bar. The best-fit Bond albedo is similar to that inferred from the dayside and nightside temperatures.

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