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Danger, G.* ; Vinogradoff, V.* ; Matzka, M. ; Viennet, J.C.* ; Remusat, L.* ; Bernard, S.* ; Ruf, A.* ; Le Sergeant d’Hendecourt, L.* ; Schmitt-Kopplin, P.

Exploring the link between molecular cloud ices and chondritic organic matter in laboratory.

Nat. Commun. 12:3538 (2021)
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Open Access Gold
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Carbonaceous meteorites are fragments of asteroids rich in organic material. In the forming solar nebula, parent bodies may have accreted organic materials resulting from the evolution of icy grains observed in dense molecular clouds. The major issues of this scenario are the secondary processes having occurred on asteroids, which may have modified the accreted matter. Here, we explore the evolution of organic analogs of protostellar/protoplanetary disk material once accreted and submitted to aqueous alteration at 150 °C. The evolution of molecular compounds during up to 100 days is monitored by high resolution mass spectrometry. We report significant evolution of the molecular families, with the decreases of H/C and N/C ratios. We find that the post-aqueous products share compositional similarities with the soluble organic matter of the Murchison meteorite. These results give a comprehensive scenario of the possible link between carbonaceous meteorites and ices of dense molecular clouds.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Aqueous Alteration; Hydrothermal Alteration; Interstellar; Analogs; Origin; Meteorites; Chemistry; Evolution; Murchison; Cm
ISSN (print) / ISBN 2041-1723
e-ISSN 2041-1723
Quellenangaben Volume: 12, Issue: 1, Pages: , Article Number: 3538 Supplement: ,
Publisher Nature Publishing Group
Publishing Place London
Reviewing status Peer reviewed
Grants programs Physique et Chimie du Milieu Interstellaire (PCMI)
Deutsche Forschungsgemeinschaft (DFG, German Research foundation)
European Research Council
Centre National d'Etudes Spatiales
Agence Nationale de la Recherche
Program National de Planetologie (PNP)
Centre National de la Recherche Francaise (CNRS)
Centre National d'Etudes Spatiales (CNES)