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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 6.

Bond albedo (AB) and heat recirculation efficiency (ϵ) χ2 surfaces of LTT 9779 b calculated from dayside and nightside effective temperature estimates, and best-fit irradiation temperature ﹩{T}_{0}=278{3}_{-38}^{+35}﹩ K. The 1σ, 2σ, and 3σ regions for each instrument are shown in a different shade. The yellow star represents the best-fit AB and ϵ as calculated from the 1000 iteration Monte Carlo simulation with the NIRSpec+NIRISS effective temperatures. Top: χ2 surfaces derived with standard errors. Bottom: χ2 surfaces calculated with errors inflated by captured flux fractions. With errors inflated by the captured flux, only the NIRSpec+NIRISS measurements remain well constrained.

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