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Evidence for an Atmosphere on the Ultra-short-period Super-Earth HD 3167 b

  • Authors: Brandon Park Coy, Qiao Xue, Megan Weiner Mansfield, Jason D. Eastman, Anjali A. A. Piette, Tyler Fairnington, Cole Smith, Michael Zhang, Eliza M.-R. Kempton, Jacob L. Bean, Xuan Ji, Peter Gao, Jegug Ih, Daniel D. B. Koll, Rafael Luque, Jaume Orell-Miquel, Edwin S. Kite

Brandon Park Coy et al 2026 The Astrophysical Journal Letters 1005 .

  • Provider: AAS Journals

Caption: Figure 2.

Our retrieved brightness temperature ratio and uncertainties for HD 3167 b in the context of solar system terrestrial bodies. Estimates for planetary Bond albedo and heat redistribution efficiency are taken from Q. Xue et al. (2024). Dashed lines represent 1σ, 2σ, 3σ, 4σ, and 5σ confidence intervals, and the red arrow represents the maximum possible dayside temperature of a perfect blackbody. Our data are inconsistent with a thin Mars-like atmosphere at roughly 4σ and are most consistent with a thick, highly reflective atmosphere like that of Venus.

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