Orateur
Description
Carbonaceous asteroids are considered to best preserve the early Solar System's mineralogical and molecular phases, but they have undergone transformation through space weathering and aqueous alteration. Sample-return missions like NASA’s OSIRIS-REx and JAXA’s Hayabusa2 have provided uncontaminated materials from asteroids Bennu and Ryugu, respectively, allowing for direct analysis. My study compares the phyllosilicate composition of both asteroid samples using hyperspectral microscopy and infrared spectrometry. Initial findings show similarities but also significant heterogeneity within Bennu’s sample, particularly in OH and Si-O spectral features, suggesting distinct alteration processes. Further analysis aims to refine our understanding of these asteroids' formation and evolution.
| Astrophysics Field | Planetology and astrochemistry |
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