Recent replenishment of aliphatic organics on Ceres from a large subsurface reservoir.

ABSTRACT: Ceres hosts notable aliphatic-organic concentrations, ranging from approximately 5 to >30 weight % in specific surface areas. The origins and persistence of these organics are under debate due to the intense aliphatic organic signature and radiation levels in Ceres' orbit, which would typically lead to their destruction, hindering detection. To investigate this, we conducted laboratory experiments to replicate how the signature of the organic-rich regions would degrade due to radiation. Our findings indicate a fast degradation rate, implying the exposure of buried organics within the past few million years. This degradation rate, coupled with observed quantities, implies that the aliphatics must be present in substantial quantities within the shallow subsurface. Our estimates suggest an in

SUBMITTER: De Sanctis MC 

PROVIDER: S-EPMC11423891 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature