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A JWST Transiting Survey of FGK Stellar Limb Darkening: Empirical Evidence for Quadratic Laws and Atmospheric Model Comparisons

  • Authors: David K. Sing, Joshua D. Lothringer, Jeff A. Valenti, Natalie H. Allen, Katherine A. Bennett, Carlos Gascón, Mei Ting Mak, Patrick McCreery, Sagnick Mukherjee, Lakeisha M. Ramos Rosado, Stephen P. Schmidt, Kevin B. Stevenson, Daniel P. Thorngren, Le-Chris Wang

David K. Sing et al 2026 The Astronomical Journal 172 .

  • Provider: AAS Journals

Caption: Figure 5.

Effective limb angle μeff as a function of stellar parameters for the T.-O. Husser et al. (2013a) PHOENIX spherical model grid at solar metallicity ([M/H] = 0.0). μeff represents the μ value at which the slant optical depth reaches unity. Cooler stars and lower surface gravities produce smaller μeff values, corresponding to more extended atmospheres where the τslant = 1 surface lies closer to the model’s outer boundary. Contour labels indicate μeff values.

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