Cometary dust: the diversity of primitive refractory grains
Comet dust is primitive and shows significant diversity. Our knowledge of the properties of primitive cometary particles has expanded significantly through microscale investigations of cosmic dust samples (anhydrous interplanetary dust particles (IDPs), chondritic porous (CP) IDPs and UltraCarbonace...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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crroyalsociety:10.1098/rsta.2016.0260 2024-10-13T14:03:07+00:00 Cometary dust: the diversity of primitive refractory grains Wooden, D. H. Ishii, H. A. Zolensky, M. E. NASA HQ/SMD and its Planetary Science Division 2017 http://dx.doi.org/10.1098/rsta.2016.0260 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2016.0260 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2016.0260 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 375, issue 2097, page 20160260 ISSN 1364-503X 1471-2962 journal-article 2017 crroyalsociety https://doi.org/10.1098/rsta.2016.0260 2024-09-17T04:34:48Z Comet dust is primitive and shows significant diversity. Our knowledge of the properties of primitive cometary particles has expanded significantly through microscale investigations of cosmic dust samples (anhydrous interplanetary dust particles (IDPs), chondritic porous (CP) IDPs and UltraCarbonaceous Antarctic micrometeorites, Stardust and Rosetta ), as well as through remote sensing ( Spitzer IR spectroscopy). Comet dust are aggregate particles of materials unequilibrated at submicrometre scales. We discuss the properties and processes experienced by primitive matter in comets. Primitive particles exhibit a diverse range of: structure and typology; distribution of constituents; concentration and form of carbonaceous and refractory organic matter; Mg- and Fe-contents of the silicate minerals; sulfides; existence/abundance of type II chondrule fragments; high-temperature calcium–aluminium inclusions and ameboid-olivine aggregates; and rarely occurring Mg-carbonates and magnetite, whose explanation requires aqueous alteration on parent bodies. The properties of refractory materials imply there were disc processes that resulted in different comets having particular selections of primitive materials. The diversity of primitive particles has implications for the diversity of materials in the protoplanetary disc present at the time and in the region where the comets formed. This article is part of the themed issue ‘Cometary science after Rosetta’. Article in Journal/Newspaper Antarc* Antarctic The Royal Society Antarctic Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 375 2097 20160260 |
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The Royal Society |
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crroyalsociety |
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English |
description |
Comet dust is primitive and shows significant diversity. Our knowledge of the properties of primitive cometary particles has expanded significantly through microscale investigations of cosmic dust samples (anhydrous interplanetary dust particles (IDPs), chondritic porous (CP) IDPs and UltraCarbonaceous Antarctic micrometeorites, Stardust and Rosetta ), as well as through remote sensing ( Spitzer IR spectroscopy). Comet dust are aggregate particles of materials unequilibrated at submicrometre scales. We discuss the properties and processes experienced by primitive matter in comets. Primitive particles exhibit a diverse range of: structure and typology; distribution of constituents; concentration and form of carbonaceous and refractory organic matter; Mg- and Fe-contents of the silicate minerals; sulfides; existence/abundance of type II chondrule fragments; high-temperature calcium–aluminium inclusions and ameboid-olivine aggregates; and rarely occurring Mg-carbonates and magnetite, whose explanation requires aqueous alteration on parent bodies. The properties of refractory materials imply there were disc processes that resulted in different comets having particular selections of primitive materials. The diversity of primitive particles has implications for the diversity of materials in the protoplanetary disc present at the time and in the region where the comets formed. This article is part of the themed issue ‘Cometary science after Rosetta’. |
author2 |
NASA HQ/SMD and its Planetary Science Division |
format |
Article in Journal/Newspaper |
author |
Wooden, D. H. Ishii, H. A. Zolensky, M. E. |
spellingShingle |
Wooden, D. H. Ishii, H. A. Zolensky, M. E. Cometary dust: the diversity of primitive refractory grains |
author_facet |
Wooden, D. H. Ishii, H. A. Zolensky, M. E. |
author_sort |
Wooden, D. H. |
title |
Cometary dust: the diversity of primitive refractory grains |
title_short |
Cometary dust: the diversity of primitive refractory grains |
title_full |
Cometary dust: the diversity of primitive refractory grains |
title_fullStr |
Cometary dust: the diversity of primitive refractory grains |
title_full_unstemmed |
Cometary dust: the diversity of primitive refractory grains |
title_sort |
cometary dust: the diversity of primitive refractory grains |
publisher |
The Royal Society |
publishDate |
2017 |
url |
http://dx.doi.org/10.1098/rsta.2016.0260 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2016.0260 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2016.0260 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 375, issue 2097, page 20160260 ISSN 1364-503X 1471-2962 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsta.2016.0260 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
375 |
container_issue |
2097 |
container_start_page |
20160260 |
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1812819540903460864 |