TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead?
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 co...
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal Letters |
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| Online Access: | https://doi.org/10.3847/2041-8213/adace0 |
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| author | M. J. Way |
| author_facet | M. J. Way |
| author_sort | M. J. Way |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-d3a26fedd9b24d1988056967524be236 |
| institution | Kabale University |
| issn | 2041-8205 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal Letters |
| spelling | doaj-art-d3a26fedd9b24d1988056967524be2362025-02-05T18:01:15ZengIOP PublishingThe Astrophysical Journal Letters2041-82052025-01-019801L710.3847/2041-8213/adace0TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead?M. J. Way0https://orcid.org/0000-0003-3728-0475NASA Goddard Institute for Space Studies , 2880 Broadway, New York, NY 10025, USA ; Michael.Way@nasa.gov; GSFC Sellers Exoplanet Environments Collaboration, NASA Goddard Space Flight Center , Greenbelt, MD 20771, USA; Theoretical Astrophysics, Department of Physics and Astronomy, Uppsala University , Uppsala, SE-75120, SwedenTRAPPIST-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.https://doi.org/10.3847/2041-8213/adace0Exoplanets |
| spellingShingle | M. J. Way TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead? The Astrophysical Journal Letters Exoplanets |
| title | TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead? |
| title_full | TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead? |
| title_fullStr | TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead? |
| title_full_unstemmed | TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead? |
| title_short | TRAPPIST-1 d: Exo-Venus, Exo-Earth, or Exo-Dead? |
| title_sort | trappist 1 d exo venus exo earth or exo dead |
| topic | Exoplanets |
| url | https://doi.org/10.3847/2041-8213/adace0 |
| work_keys_str_mv | AT mjway trappist1dexovenusexoearthorexodead |