Variations of organic functional chemistry in carbonaceous matter from the asteroid 162173 Ryugu
Bradley de Gregorio
(1)
,
George D. Cody
(2)
,
Rhonda M. Stroud
(3)
,
A. L. David Kilcoyne
(4)
,
Scott Sandford
(5)
,
Corentin Le Guillou
(6)
,
Larry R. Nittler
(3)
,
Jens Barosch
(7)
,
Hikaru Yabuta
(8)
,
Zita Martins
(9)
,
Yoko Kebukawa
(10)
,
Taiga Okumura
(11)
,
Minako Hashiguchi
(12)
,
Shohei Yamashita
(13)
,
Yasuo Takeichi
(13)
,
Yoshio Takahashi
(11)
,
Daisuke Wakabayashi
(13)
,
Cécile Engrand
(14)
,
Laure Bejach
(14)
,
Lydie Bonal
(15)
,
Eric Quirico
(15)
,
Laurent Remusat
(16)
,
Jean Duprat
(16)
,
Maximilien Verdier-Paoletti
(16)
,
Smail Mostefaoui
(16)
,
Mutsumi Komatsu
(17)
,
Jérémie Mathurin
(18)
,
Alexandre Dazzi
(18)
,
Ariane Deniset-Besseau
(18)
,
Emmanuel Dartois
(19)
,
Yusuke Tamenori
(20)
,
Hiroki Suga
(21)
,
Gilles Montagnac
(22)
,
Kanami Kamide
(8)
,
Miho Shigenaka
(8)
,
Megumi Matsumoto
(23)
,
Yuma Enokido
(23)
,
Makoto Yoshikawa
(24)
,
Takanao Saiki
(24)
,
Satoshi Tanaka
(24)
,
Fuyuto Terui
(25)
,
Satoru Nakazawa
(24)
,
Tomohiro Usui
(24)
,
Masanao Abe
(24)
,
Tatsuaki Okada
(24)
,
Toru Yada
(24)
,
Masahiro Nishimura
(24)
,
Aiko Nakato
(24)
,
Akiko Miyazaki
(24)
,
Kasumi Yogata
(24)
,
Hisayoshi Yurimoto
(26)
,
Tomoki Nakamura
(23)
,
Takaaki Noguchi
(11)
,
Ryuji Okazaki
(27)
,
Hiroshi Naraoka
(27)
,
Kanako Sakamoto
(24)
,
Shogo Tachibana
(11)
,
Sei-Ichiro Watanabe
(12)
,
Yuichi Tsuda
(24)
1
NRL -
Naval Research Laboratory
2 Carnegie Institution for Science
3 SESE - School of Earth and Space Exploration [Tempe]
4 ALS - Advanced Light Source [LBNL Berkeley]
5 ARC - NASA Ames Research Center
6 UMET - Unité Matériaux et Transformations - UMR 8207
7 School of Geosciences [Edinburgh]
8 Department of Earth and Planetary Systems Science [Hiroshima]
9 CQE - Centro de Quimica Estrutural
10 Department of Earth and Planetary Sciences [TITECH Tokyo]
11 Department of Earth and Planetary Science [Tokyo]
12 Nagoya University
13 High energy accelerator research organization - KEK
14 IJCLab - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
15 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
16 IMPMC - Institut de minéralogie, de physique des matériaux et de cosmochimie
17 Saitama University
18 ICP - Institut de Chimie Physique
19 ISMO - Institut des Sciences Moléculaires d'Orsay
20 TMU - Tokyo Metropolitan University [Tokyo]
21 JASRI - Japan Synchrotron Radiation Research Institute [Hyogo]
22 ENS de Lyon - École normale supérieure de Lyon
23 Department of Earth Science [Sendai]
24 ISAS - Institute of Space and Astronautical Science
25 Kanagawa Institute of Technology
26 Hokkaido University [Sapporo, Japan]
27 Department of Earth and Planetary Sciences [Fukuoka]
2 Carnegie Institution for Science
3 SESE - School of Earth and Space Exploration [Tempe]
4 ALS - Advanced Light Source [LBNL Berkeley]
5 ARC - NASA Ames Research Center
6 UMET - Unité Matériaux et Transformations - UMR 8207
7 School of Geosciences [Edinburgh]
8 Department of Earth and Planetary Systems Science [Hiroshima]
9 CQE - Centro de Quimica Estrutural
10 Department of Earth and Planetary Sciences [TITECH Tokyo]
11 Department of Earth and Planetary Science [Tokyo]
12 Nagoya University
13 High energy accelerator research organization - KEK
14 IJCLab - Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
15 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
16 IMPMC - Institut de minéralogie, de physique des matériaux et de cosmochimie
17 Saitama University
18 ICP - Institut de Chimie Physique
19 ISMO - Institut des Sciences Moléculaires d'Orsay
20 TMU - Tokyo Metropolitan University [Tokyo]
21 JASRI - Japan Synchrotron Radiation Research Institute [Hyogo]
22 ENS de Lyon - École normale supérieure de Lyon
23 Department of Earth Science [Sendai]
24 ISAS - Institute of Space and Astronautical Science
25 Kanagawa Institute of Technology
26 Hokkaido University [Sapporo, Japan]
27 Department of Earth and Planetary Sciences [Fukuoka]
Corentin Le Guillou
- Fonction : Auteur
- PersonId : 1127619
- IdHAL : corentinleguillou
- ORCID : 0000-0002-7118-4607
Cécile Engrand
- Fonction : Auteur
- PersonId : 739899
- IdHAL : cecile-engrand
- ORCID : 0000-0002-0396-5583
- IdRef : 147692458
Laure Bejach
- Fonction : Auteur
- PersonId : 1238516
- ORCID : 0000-0002-0461-7089
Jérémie Mathurin
- Fonction : Auteur
- PersonId : 1173891
- ORCID : 0000-0002-6769-6394
Alexandre Dazzi
- Fonction : Auteur
- PersonId : 1344250
- IdHAL : alexandre-dazzi
Ariane Deniset-Besseau
- Fonction : Auteur
- PersonId : 1344252
- IdHAL : deniset-besseau-ariane
Emmanuel Dartois
- Fonction : Auteur
- PersonId : 741313
- IdHAL : emmanuel-dartois
- ORCID : 0000-0003-1197-7143
- IdRef : 136696686
Résumé
Primordial carbon delivered to the early earth by asteroids and meteorites provided a diverse source of extraterrestrial organics from pre-existing simple organic compounds, complex solar-irradiated macromolecules, and macromolecules from extended hydrothermal processing. Surface regolith collected by the Hayabusa2 spacecraft from the carbon-rich asteroid 162173 Ryugu present a unique opportunity to untangle the sources and processing history of carbonaceous matter. Here we show carbonaceous grains in Ryugu can be classified into three main populations defined by spectral shape: Highly aromatic (HA), Alkyl-Aromatic (AA), and IOM-like (IL). These carbon populations may be related to primordial chemistry, since C and N isotopic compositions vary between the three groups. Diffuse carbon is occasionally dominated by molecular carbonate preferentially associated with coarse-grained phyllosilicate minerals. Compared to related carbonaceous meteorites, the greater diversity of organic functional chemistry in Ryugu indicate the pristine condition of these asteroid samples.
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