ESA’s Cometary Mission Rosetta – Re‐Characterization of the COSAC Mass Spectrometry Results - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Angewandte Chemie International Edition Year : 2022

ESA’s Cometary Mission Rosetta – Re‐Characterization of the COSAC Mass Spectrometry Results

Abstract

The most pristine material of the Solar System is assumed to be preserved in comets in the form of dust and ice as refractory matter. ESA’s mission Rosetta and its lander Philae had been developed to investigate the nucleus of comet 67P/Churyumov-Gerasimenko in situ. Twenty-five minutes after the initial touchdown of Philae on the surface of comet 67P in November 2014, a mass spectrum was recorded by the time-of-flight mass spectrometer COSAC onboard Philae. The new characterization of this mass spectrum through non-negative least squares fitting and Monte Carlo simulations reveals the chemical composition of comet 67P. A suite of 12 organic molecules, 9 of which also found in the original analysis of this data, exhibit high statistical probability to be present in the grains sampled from the cometary nucleus. These volatile molecules are among the most abundant in the comet’s chemical composition and represent an inventory of the first raw materials present in the early Solar System.
Fichier principal
Vignette du fichier
Angew Chem Int Ed - 2022 - Leseigneur - ESA s Cometary Mission Rosetta Re%u2010Characterization of the COSAC Mass Spectrometry.pdf (2.1 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

insu-03650139 , version 2 (20-06-2022)
insu-03650139 , version 1 (05-11-2023)

Licence

Attribution - NonCommercial - ShareAlike

Identifiers

Cite

Guillaume Leseigneur, Jan Hendrik Bredehöft, Thomas Gautier, Chaitanya Giri, Harald Krüger, et al.. ESA’s Cometary Mission Rosetta – Re‐Characterization of the COSAC Mass Spectrometry Results. Angewandte Chemie International Edition, 2022, 61 (29), pp.e202201925. ⟨10.1002/anie.202201925⟩. ⟨insu-03650139v2⟩
102 View
68 Download

Altmetric

Share

Gmail Facebook X LinkedIn More