Aqueous Alteration on Asteroids Simplifies Soluble Organic Matter Mixtures
International audience Biologically relevant abiotic extraterrestrial soluble organic matter (SOM) has been widely investigated to study the origin of life and the chemical evolution of protoplanetary disks. Synthesis of biologically relevant organics, in particular, seems to require aqueous environ...
Published in: | The Astrophysical Journal Letters |
---|---|
Main Authors: | , , , , , |
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2021
|
Subjects: | |
Online Access: | https://insu.hal.science/insu-03705273 https://doi.org/10.3847/2041-8213/ac2b34 |
id |
ftunigrenoble:oai:HAL:insu-03705273v1 |
---|---|
record_format |
openpolar |
spelling |
ftunigrenoble:oai:HAL:insu-03705273v1 2024-02-11T10:09:03+01:00 Aqueous Alteration on Asteroids Simplifies Soluble Organic Matter Mixtures Isa, Junko Orthous-Daunay, François-Régis Beck, Pierre Herd, Christopher D. K. Vuitton, Veronique Flandinet, Laurène Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) Centre National d'Études Spatiales Toulouse (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ) Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France 2021 https://insu.hal.science/insu-03705273 https://doi.org/10.3847/2041-8213/ac2b34 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/arxiv/2111.10004 info:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8213/ac2b34 insu-03705273 https://insu.hal.science/insu-03705273 ARXIV: 2111.10004 BIBCODE: 2021ApJ.920L.39I doi:10.3847/2041-8213/ac2b34 The Astrophysical Journal Letters https://insu.hal.science/insu-03705273 The Astrophysical Journal Letters, 2021, 920, ⟨10.3847/2041-8213/ac2b34⟩ Carbonaceous chondrites Solar system formation Molecule formation Solar nebulae Protoplanetary disks 200 1530 2076 1508 1300 Astrophysics - Earth and Planetary Astrophysics Physics - Data Analysis Statistics and Probability [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2021 ftunigrenoble https://doi.org/10.3847/2041-8213/ac2b34 2024-01-23T23:37:06Z International audience Biologically relevant abiotic extraterrestrial soluble organic matter (SOM) has been widely investigated to study the origin of life and the chemical evolution of protoplanetary disks. Synthesis of biologically relevant organics, in particular, seems to require aqueous environments in the early solar system. However, SOM in primitive meteorites includes numerous chemical species besides the biologically relevant ones, and the reaction mechanisms that comprehensively explain the complex nature of SOM are unknown. Besides, the initial reactants, which formed before asteroid accretion, were uncharacterized. We examined the mass distribution of SOM extracted from three distinct Tagish Lake meteorite fragments, which exhibit different degrees of aqueous alteration though they originated from a single asteroid. We report that mass distributions of SOM in the primordial fragments are well fit by the Schulz-Zimm (SZ) model for the molecular weight distribution patterns found in chain-growth polymerization experiments. Also, the distribution patterns diverge further from SZ with increasing degrees of aqueous alteration. These observations imply that the complex nature of the primordial SOM (1) was established before severe alteration on the asteroid, (2) possibly existed before parent-body accretion, and (3) later became simplified on the asteroid. Therefore, aqueous reactions on asteroids are not required conditions for cultivating complex SOM. Furthermore, we found that overall H/C ratios of SOM decrease with increasing aqueous alteration, and the estimate of H loss from the SOM is 10%-30%. Organics seem to be a significant H 2 source that may have caused subsequent chemical reactions in the Tagish Lake meteorite parent body. Article in Journal/Newspaper Tagish Université Grenoble Alpes: HAL Tagish ENVELOPE(-134.272,-134.272,60.313,60.313) Tagish Lake ENVELOPE(-134.233,-134.233,59.717,59.717) The Astrophysical Journal Letters 920 2 L39 |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
Carbonaceous chondrites Solar system formation Molecule formation Solar nebulae Protoplanetary disks 200 1530 2076 1508 1300 Astrophysics - Earth and Planetary Astrophysics Physics - Data Analysis Statistics and Probability [SDU]Sciences of the Universe [physics] |
spellingShingle |
Carbonaceous chondrites Solar system formation Molecule formation Solar nebulae Protoplanetary disks 200 1530 2076 1508 1300 Astrophysics - Earth and Planetary Astrophysics Physics - Data Analysis Statistics and Probability [SDU]Sciences of the Universe [physics] Isa, Junko Orthous-Daunay, François-Régis Beck, Pierre Herd, Christopher D. K. Vuitton, Veronique Flandinet, Laurène Aqueous Alteration on Asteroids Simplifies Soluble Organic Matter Mixtures |
topic_facet |
Carbonaceous chondrites Solar system formation Molecule formation Solar nebulae Protoplanetary disks 200 1530 2076 1508 1300 Astrophysics - Earth and Planetary Astrophysics Physics - Data Analysis Statistics and Probability [SDU]Sciences of the Universe [physics] |
description |
International audience Biologically relevant abiotic extraterrestrial soluble organic matter (SOM) has been widely investigated to study the origin of life and the chemical evolution of protoplanetary disks. Synthesis of biologically relevant organics, in particular, seems to require aqueous environments in the early solar system. However, SOM in primitive meteorites includes numerous chemical species besides the biologically relevant ones, and the reaction mechanisms that comprehensively explain the complex nature of SOM are unknown. Besides, the initial reactants, which formed before asteroid accretion, were uncharacterized. We examined the mass distribution of SOM extracted from three distinct Tagish Lake meteorite fragments, which exhibit different degrees of aqueous alteration though they originated from a single asteroid. We report that mass distributions of SOM in the primordial fragments are well fit by the Schulz-Zimm (SZ) model for the molecular weight distribution patterns found in chain-growth polymerization experiments. Also, the distribution patterns diverge further from SZ with increasing degrees of aqueous alteration. These observations imply that the complex nature of the primordial SOM (1) was established before severe alteration on the asteroid, (2) possibly existed before parent-body accretion, and (3) later became simplified on the asteroid. Therefore, aqueous reactions on asteroids are not required conditions for cultivating complex SOM. Furthermore, we found that overall H/C ratios of SOM decrease with increasing aqueous alteration, and the estimate of H loss from the SOM is 10%-30%. Organics seem to be a significant H 2 source that may have caused subsequent chemical reactions in the Tagish Lake meteorite parent body. |
author2 |
Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) Centre National d'Études Spatiales Toulouse (CNES)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ) Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France |
format |
Article in Journal/Newspaper |
author |
Isa, Junko Orthous-Daunay, François-Régis Beck, Pierre Herd, Christopher D. K. Vuitton, Veronique Flandinet, Laurène |
author_facet |
Isa, Junko Orthous-Daunay, François-Régis Beck, Pierre Herd, Christopher D. K. Vuitton, Veronique Flandinet, Laurène |
author_sort |
Isa, Junko |
title |
Aqueous Alteration on Asteroids Simplifies Soluble Organic Matter Mixtures |
title_short |
Aqueous Alteration on Asteroids Simplifies Soluble Organic Matter Mixtures |
title_full |
Aqueous Alteration on Asteroids Simplifies Soluble Organic Matter Mixtures |
title_fullStr |
Aqueous Alteration on Asteroids Simplifies Soluble Organic Matter Mixtures |
title_full_unstemmed |
Aqueous Alteration on Asteroids Simplifies Soluble Organic Matter Mixtures |
title_sort |
aqueous alteration on asteroids simplifies soluble organic matter mixtures |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://insu.hal.science/insu-03705273 https://doi.org/10.3847/2041-8213/ac2b34 |
long_lat |
ENVELOPE(-134.272,-134.272,60.313,60.313) ENVELOPE(-134.233,-134.233,59.717,59.717) |
geographic |
Tagish Tagish Lake |
geographic_facet |
Tagish Tagish Lake |
genre |
Tagish |
genre_facet |
Tagish |
op_source |
The Astrophysical Journal Letters https://insu.hal.science/insu-03705273 The Astrophysical Journal Letters, 2021, 920, ⟨10.3847/2041-8213/ac2b34⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/2111.10004 info:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8213/ac2b34 insu-03705273 https://insu.hal.science/insu-03705273 ARXIV: 2111.10004 BIBCODE: 2021ApJ.920L.39I doi:10.3847/2041-8213/ac2b34 |
op_doi |
https://doi.org/10.3847/2041-8213/ac2b34 |
container_title |
The Astrophysical Journal Letters |
container_volume |
920 |
container_issue |
2 |
container_start_page |
L39 |
_version_ |
1790608758470082560 |