Skip to Main content Skip to Navigation
Conference papers

Preparing sample return from Ryugu and Bennu asteroids with micrometeorites from the Concordia collection

Abstract : Hayabusa 2 and OSIRIS-REx space missions will give a unique access to study the composition of carbonaceous asteroids. A key issue will be the comparison of the organic and mineral compounds from these near-Earth active carbonaceous asteroids with that of carbonaceous chondrites, carbon-rich interplanetary dust particles and cometary samples (81P/Wild2 or in-situ analyses from 67P/CG). The comparison of Ryugu and Bennu samples with chondritic micrometeorites and with extremely carbon-rich interplanetary dust particles such as the Ultra-Carbonaceous MicroMeteorites (UCAMMs) will provide a unique tool to assess their possible links with cometary organics. Analytical methods applied to study micrometeorites from Concordia collection (Antarctica) and the most recent results obtained will be summarised. A particular emphasis will be put on the dedicated experimental protocols that we developed to analyse such micrometeorite fragments and study their mineral-organic association at scales relevant to their intimate association, ranging from tens of nanometers to a few microns.
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-03020716
Contributor : Jean Duprat <>
Submitted on : Tuesday, December 1, 2020 - 3:46:17 PM
Last modification on : Monday, January 4, 2021 - 9:30:01 AM
Long-term archiving on: : Tuesday, March 2, 2021 - 6:10:07 PM

File

2019sf2a.conf..0501D.pdf
Publisher files allowed on an open archive

Identifiers

  • HAL Id : hal-03020716, version 1

Citation

J Duprat, C Engrand, E Dartois, J Mathurin, S Bernard, et al.. Preparing sample return from Ryugu and Bennu asteroids with micrometeorites from the Concordia collection. Journées SF2A, May 2019, Nice, France. ⟨hal-03020716⟩

Share

Metrics

Record views

40

Files downloads

18