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JWST Unveils a High Mean Molecular Weight Atmosphere for Mini-Neptune TOI-1130 b: Evidence for Formation Beyond the Water Ice Line

  • Authors: Saugata Barat, Tyler Fairnington, Shelby Courreges, Chelsea Huang, Andrew Vanderburg, Caroline V. Morley, Judith Korth, Hannu Parviainen, Alexis Brandeker, George Zhou, Thomas M. Evans-Soma, Lizhou Sha, Douglas N. C. Lin, Duncan Wright, Ava Morrissey, Emma Nabbie, Karen A. Collins, Phil Evans, Tristan Guillot, Keith Horne, Don J. Radford, Richard P. Schwarz, Avi Shporer, Gregorg Srdoc, Olga Suarez

Saugata Barat et al 2026 The Astrophysical Journal Letters 1002 .

  • Provider: AAS Journals

Caption: Figure 6.

We show the transmission spectrum of TOI-1130 b, zoomed in on the He triplet feature. We derive this spectrum using the formalism described in Section 4.6. The overplotted models have been calculated using the publicly available p-winds (L. A. Dos Santos et al. 2022) code. The red lines correspond to an upper atmosphere temperature of 8000 K and the blue lines correspond to 10,000 K models. The different line styles correspond to different mass-loss rates.

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