Evidence for asteroid scattering and distal solar system solids from meteorite paleomagnetism
Asteroid-sized bodies are predicted to have been scattered throughout the solar system following gravitational interactions with the giant planets. This process could have delivered water-rich small bodies to the inner solar system. However, evidence from the meteorite record supporting this scatter...
Published in: | The Astrophysical Journal |
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American Astronomical Society
2020
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Online Access: | https://doi.org/10.3847/1538-4357/ab7cd4 https://ora.ox.ac.uk/objects/uuid:6ee19d0d-8709-4ef8-b9ef-2b0394bd5aad |
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ftuloxford:oai:ora.ox.ac.uk:uuid:6ee19d0d-8709-4ef8-b9ef-2b0394bd5aad 2024-09-30T14:44:40+00:00 Evidence for asteroid scattering and distal solar system solids from meteorite paleomagnetism Bryson, JFJ Weiss, BP Lima, EA Gattacceca, J Cassata, WS 2020-09-07 https://doi.org/10.3847/1538-4357/ab7cd4 https://ora.ox.ac.uk/objects/uuid:6ee19d0d-8709-4ef8-b9ef-2b0394bd5aad eng eng American Astronomical Society doi:10.3847/1538-4357/ab7cd4 https://ora.ox.ac.uk/objects/uuid:6ee19d0d-8709-4ef8-b9ef-2b0394bd5aad https://doi.org/10.3847/1538-4357/ab7cd4 info:eu-repo/semantics/openAccess Journal article 2020 ftuloxford https://doi.org/10.3847/1538-4357/ab7cd4 2024-09-06T07:47:36Z Asteroid-sized bodies are predicted to have been scattered throughout the solar system following gravitational interactions with the giant planets. This process could have delivered water-rich small bodies to the inner solar system. However, evidence from the meteorite record supporting this scattering is limited due to difficulties in recovering the formation distance of meteorite parent bodies from laboratory measurements. Moreover, ancient millimeter-sized solids that formed in the inner solar system (calcium–aluminum-rich inclusions (CAIs) and chondrules) have also been proposed to have migrated throughout the solar system, which could have been key to their survival. Our understanding of the driving mechanisms, distances, and timings involved in this motion is also restricted for the same reasons. Here, we address these limitations by recovering the formation distance of the parent asteroid of the Tagish Lake meteorite from measurements of its natural remanent magnetization. We find that this meteorite experienced an ancient field intensity <0.15 μT. Accounting for the average effect of a tilted parent body rotation axis and possible uncertainties associated with the remanence acquisition mechanism, this result argues that the Tagish Lake parent body formed at >8–13 au, suggesting this body originates from the distal solar system. Tagish Lake came to Earth from the asteroid belt which, combined with our recovered formation distance, suggests that some small bodies traveled large distances throughout the solar system. Moreover, Tagish Lake contains CAIs and chondrules, indicating that these solids were capable of traveling to the distal solar system within just a few million years. Article in Journal/Newspaper Tagish ORA - Oxford University Research Archive Tagish ENVELOPE(-134.272,-134.272,60.313,60.313) Tagish Lake ENVELOPE(-134.233,-134.233,59.717,59.717) The Astrophysical Journal 892 2 126 |
institution |
Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
description |
Asteroid-sized bodies are predicted to have been scattered throughout the solar system following gravitational interactions with the giant planets. This process could have delivered water-rich small bodies to the inner solar system. However, evidence from the meteorite record supporting this scattering is limited due to difficulties in recovering the formation distance of meteorite parent bodies from laboratory measurements. Moreover, ancient millimeter-sized solids that formed in the inner solar system (calcium–aluminum-rich inclusions (CAIs) and chondrules) have also been proposed to have migrated throughout the solar system, which could have been key to their survival. Our understanding of the driving mechanisms, distances, and timings involved in this motion is also restricted for the same reasons. Here, we address these limitations by recovering the formation distance of the parent asteroid of the Tagish Lake meteorite from measurements of its natural remanent magnetization. We find that this meteorite experienced an ancient field intensity <0.15 μT. Accounting for the average effect of a tilted parent body rotation axis and possible uncertainties associated with the remanence acquisition mechanism, this result argues that the Tagish Lake parent body formed at >8–13 au, suggesting this body originates from the distal solar system. Tagish Lake came to Earth from the asteroid belt which, combined with our recovered formation distance, suggests that some small bodies traveled large distances throughout the solar system. Moreover, Tagish Lake contains CAIs and chondrules, indicating that these solids were capable of traveling to the distal solar system within just a few million years. |
format |
Article in Journal/Newspaper |
author |
Bryson, JFJ Weiss, BP Lima, EA Gattacceca, J Cassata, WS |
spellingShingle |
Bryson, JFJ Weiss, BP Lima, EA Gattacceca, J Cassata, WS Evidence for asteroid scattering and distal solar system solids from meteorite paleomagnetism |
author_facet |
Bryson, JFJ Weiss, BP Lima, EA Gattacceca, J Cassata, WS |
author_sort |
Bryson, JFJ |
title |
Evidence for asteroid scattering and distal solar system solids from meteorite paleomagnetism |
title_short |
Evidence for asteroid scattering and distal solar system solids from meteorite paleomagnetism |
title_full |
Evidence for asteroid scattering and distal solar system solids from meteorite paleomagnetism |
title_fullStr |
Evidence for asteroid scattering and distal solar system solids from meteorite paleomagnetism |
title_full_unstemmed |
Evidence for asteroid scattering and distal solar system solids from meteorite paleomagnetism |
title_sort |
evidence for asteroid scattering and distal solar system solids from meteorite paleomagnetism |
publisher |
American Astronomical Society |
publishDate |
2020 |
url |
https://doi.org/10.3847/1538-4357/ab7cd4 https://ora.ox.ac.uk/objects/uuid:6ee19d0d-8709-4ef8-b9ef-2b0394bd5aad |
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_relation |
doi:10.3847/1538-4357/ab7cd4 https://ora.ox.ac.uk/objects/uuid:6ee19d0d-8709-4ef8-b9ef-2b0394bd5aad https://doi.org/10.3847/1538-4357/ab7cd4 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3847/1538-4357/ab7cd4 |
container_title |
The Astrophysical Journal |
container_volume |
892 |
container_issue |
2 |
container_start_page |
126 |
_version_ |
1811645809340448768 |