Linking Methanogenesis in Low-Temperature Hydrothermal Vent Systems to Planetary Spectra: Methane Biosignatures on an Archean-Earth-like Exoplanet.
Biosignatures
Exoplanets and satellites: atmospheres
Methods: numerical
Journal
Astrobiology
ISSN: 1557-8070
Titre abrégé: Astrobiology
Pays: United States
ID NLM: 101088083
Informations de publication
Date de publication:
04 2023
04 2023
Historique:
medline:
7
4
2023
entrez:
5
4
2023
pubmed:
6
4
2023
Statut:
ppublish
Résumé
In this work, the viability of the detection of methane produced by microbial activity in low-temperature hydrothermal vents on an Archean-Earth-like exoplanet in the habitable zone is explored via a simplified bottom-up approach using a toy model. By simulating methanogens at hydrothermal vent sites in the deep ocean, biological methane production for a range of substrate inflow rates was determined and compared to literature values. These production rates were then used, along with a range of ocean floor vent coverage fractions, to determine likely methane concentrations in the simplified atmosphere. At maximum production rates, a vent coverage of 4-15 × 10
Identifiants
pubmed: 37017441
doi: 10.1089/ast.2022.0127
pmc: PMC10259611
doi:
Substances chimiques
Methane
OP0UW79H66
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
415-430Commentaires et corrections
Type : ErratumIn
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