5 papers · 1 filter
Volatile-rich Sub-Neptunes as Hydrothermal Worlds: The Case of K2-18 b
Cindy N. Luu, Xinting Yu, Christopher R. Glein +8
Temperate exoplanets between the sizes of Earth and Neptune, known as "sub-Neptunes", have emerged as intriguing targets for astrobiology. It is unknown whether these planets resem…
The role of ammonia in the distribution of volatiles in the primordial hydrosphere of Europa
Alizée Amsler Moulanier, Olivier Mousis, Alexis Bouquet +1
The presence of a hydrosphere on Europa raises questions about its habitability, and studies of its volatile inventory can provide insight into its formation process. Different sce…
A broad set of solar and cosmochemical data indicates high C-N-O abundances for the solar system
Ngoc Truong, Christopher R. Glein, Jonathan I. Lunine
We examine the role of refractory organics as a major C carrier in the outer protosolar nebula and its implications for the compositions of large Kuiper belt objects (KBOs) and CI…
The Geochemical Potential for Metabolic Processes on the Sub-Neptune Exoplanet K2-18b
Christopher R. Glein
Quantifying disequilibria is important to understand whether an environment could be habitable. It has been proposed that the exoplanet K2-18b has a hydrogen-rich atmosphere and a…
Moderate D/H Ratios in Methane Ice on Eris and Makemake as Evidence of Hydrothermal or Metamorphic Processes in Their Interiors: Geochemical Analysis
Christopher R. Glein, William M. Grundy, Jonathan I. Lunine +7
Dwarf planets Eris and Makemake have surfaces bearing methane ice of unknown origin. D/H ratios were recently determined from James Webb Space Telescope (JWST) observations of Eris…