A5018090140- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- Astro and Planetary Science
- Isotope Analysis in Ecology
- History and advancements in chemistry
- Nuclear Physics and Applications
- Advanced NMR Techniques and Applications
- Planetary Science and Exploration
- Astrophysics and Star Formation Studies
- Mass Spectrometry Techniques and Applications
- Radioactivity and Radon Measurements
- Space Exploration and Technology
- Radioactive contamination and transfer
- Chemical Reactions and Isotopes
California Institute of Technology
2020-2024
Polycyclic aromatic hydrocarbons (PAHs) contain ≲20% of the carbon in interstellar medium. They are potentially produced circumstellar environments (at temperatures ≳1000 kelvin), by reactions within cold (~10 kelvin) clouds, or processing carbon-rich dust grains. We report isotopic properties PAHs extracted from samples asteroid Ryugu and meteorite Murchison. The doubly-13C substituted compositions (Δ2×13C values) naphthalene, fluoranthene, pyrene 9 to 51‰ higher than values expected for a...
Abstract Evaluating the molecular distribution of organic compounds in pristine extraterrestrial materials is cornerstone to understanding abiotic synthesis organics and allows us better understand diversity available during formation our solar system before origins life on Earth. In this work, we identify multiple solvent extracts asteroid Ryugu samples A0106 C0107 Orgueil meteorite using two-dimensional gas chromatography time-of-flight high resolution mass spectrometry (GC×GC–HRMS). Our...