Publication Abstracts

Way 2025

Way, M.J., 2025: TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead? Astrophys. J. Lett., 980, L7, doi:10.3847/2041-8213/adace0.

TRAPPIST-1 d is generally assumed to be at the boundary between a Venus-like world and an Earth-like world, although recently published works on TRAPPIST-1 b and c raise concerns that TRAPPIST-1 d may be similarly devoid of a substantial atmosphere. TRAPPIST-1 d is also relatively understudied in comparison with TRAPPIST-1 e. The latter has generally appeared to be within the habitable zone of most atmospheric modeling studies. Assuming that TRAPPIST-1 d still retains a substantial atmosphere, we demonstrate via a series of 3D general circulation model experiments using a dynamic ocean that the planet could reside within the habitable zone in a narrow parameter space. At the same time, it could also be an exo-Venus- or exo-Dead-type world or in transition between between one of these. Studies like this can help distinguish between these types of worlds.

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BibTeX Citation

@article{wa06900s,
  author={Way, M. J.},
  title={TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead?},
  year={2025},
  journal={Astrophysical Journal Letters},
  volume={980},
  pages={L7},
  doi={10.3847/2041-8213/adace0},
}

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RIS Citation

TY  - JOUR
ID  - wa06900s
AU  - Way, M. J.
PY  - 2025
TI  - TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead?
JA  - Astrophys. J. Lett.
JO  - Astrophysical Journal Letters
VL  - 980
SP  - L7
DO  - 10.3847/2041-8213/adace0
ER  -

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