Ethene-ethanol ratios as potential indicators of hydrothermal activity at Enceladus, Europa, and other icy ocean worlds

Robinson, Kirtland J.; Hartnett, Hilairy E.; Gould, Ian R.; Shock, Everett L.

doi:10.1016/j.icarus.2023.115765

Icarus

2023

DOI: 10.1016/j.icarus.2023.115765

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Ethene-ethanol ratios as potential indicators of hydrothermal activity at Enceladus, Europa, and other icy ocean worlds

Kirtland J. Robinson,

Hilairy E. Hartnett,

Ian R. Gould

et al.

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2024

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Cited by 2 publications

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MASPEX-Europa: The Europa Clipper Neutral Gas Mass Spectrometer Investigation

Waite,

Burch,

Brockwell

et al. 2024

Space Sci Rev

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The MAss Spectrometer for Planetary EXploration (MASPEX) is a high-mass-resolution, high-sensitivity, multi-bounce time-of-flight mass spectrometer (MBTOF) capable of measuring minor species with abundances of sub-parts-per-million in Europa’s sputter-produced and radiolytically modified exosphere and in its oceanic plumes. The goal of the MASPEX-Europa investigation is to determine, through in-situ measurement of the exosphere and plume composition, whether the conditions for habitability exist or have existed on Europa. As conventionally defined, based on our knowledge of Earth life, the three fundamental conditions for habitability are: (1) the presence of liquid water; (2) the presence of organic compounds and the biogenic elements CHNOPS; and (3) a source of energy available for metabolic processes, which for Europa will most probably be chemosynthetic rather than photosynthetic. Condition (1) is already established by previous indirect (magnetic field) measurements, while MASPEX will contribute directly to the evaluation of condition (2) through highly specific compositional measurements in the Europan exosphere and plumes. The composition measurements will also contribute to the test of condition (3) through disequilibrium states of chemical reactions. Thus, the primary goal of MASPEX for Europa Clipper is to assess the habitability of Europa and specifically of its interior ocean. MASPEX has been developed successfully, and its calibration has demonstrated that it meets its specified requirements for sensitivity, dynamic range, and mass resolution. This paper reports the development of the MASPEX scientific investigation, the instrument, its performance, and calibration.

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MASPEX-Europa: The Europa Clipper Neutral Gas Mass Spectrometer Investigation

Waite,

Burch,

Brockwell

et al. 2024

Space Sci Rev

View full text Add to dashboard Cite

show abstract

Thermodynamic property estimations for aqueous primary, secondary, and tertiary alkylamines, benzylamines, and their corresponding aminiums across temperature and pressure are validated by measurements from experiments

Robinson,

Seewald,

Sylva

et al. 2024

Geochimica et Cosmochimica Acta

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Ethene-ethanol ratios as potential indicators of hydrothermal activity at Enceladus, Europa, and other icy ocean worlds

Cited by 2 publications

References 27 publications

MASPEX-Europa: The Europa Clipper Neutral Gas Mass Spectrometer Investigation

MASPEX-Europa: The Europa Clipper Neutral Gas Mass Spectrometer Investigation

Thermodynamic property estimations for aqueous primary, secondary, and tertiary alkylamines, benzylamines, and their corresponding aminiums across temperature and pressure are validated by measurements from experiments

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