Chemical and physical properties of cometary dust
International audience Cometary dust particles are best preserved remnants of the matter present at the onset of the formation of the Solar System. Space missions, telescopic observations and laboratory analyses advanced the knowledge on the properties of cometary dust. Cometary samples were returne...
Main Authors: | , , , |
---|---|
Other Authors: | , , , , , , , , , , |
Format: | Report |
Language: | English |
Published: |
HAL CCSD
2023
|
Subjects: | |
Online Access: | https://hal.science/hal-04092084 https://hal.science/hal-04092084/document https://hal.science/hal-04092084/file/Engrand_2023_Cometary_dust_CometsIII%20%281%29.pdf |
id |
ftutoulouse3hal:oai:HAL:hal-04092084v1 |
---|---|
record_format |
openpolar |
spelling |
ftutoulouse3hal:oai:HAL:hal-04092084v1 2024-05-12T07:54:39+00:00 Chemical and physical properties of cometary dust Engrand, Cecile Lasue, Jérémie Wooden, Diane H Zolensky, Mike E Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Institut de recherche en astrophysique et planétologie (IRAP) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) NASA Ames Research Center (ARC) NASA Johnson Space Center (JSC) NASA ANR-18-CE31-0011,COMETOR,Origine de la poussière cométaire(2018) 2023-10-24 https://hal.science/hal-04092084 https://hal.science/hal-04092084/document https://hal.science/hal-04092084/file/Engrand_2023_Cometary_dust_CometsIII%20%281%29.pdf en eng HAL CCSD info:eu-repo/semantics/altIdentifier/arxiv/2305.03417 hal-04092084 https://hal.science/hal-04092084 https://hal.science/hal-04092084/document https://hal.science/hal-04092084/file/Engrand_2023_Cometary_dust_CometsIII%20%281%29.pdf ARXIV: 2305.03417 INSPIRE: 2657505 info:eu-repo/semantics/OpenAccess https://hal.science/hal-04092084 2023 [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/preprint Preprints, Working Papers, . 2023 ftutoulouse3hal 2024-04-18T00:39:36Z International audience Cometary dust particles are best preserved remnants of the matter present at the onset of the formation of the Solar System. Space missions, telescopic observations and laboratory analyses advanced the knowledge on the properties of cometary dust. Cometary samples were returned from comet 81P/Wild2 by the Stardust mission. The chondritic (porous) anhydrous interplanetary dust particles and chondritic porous micrometeorites, and the ultracarbonaceous Antarctic micrometeorites (UCAMMs) also show strong evidence for a cometary origin. The composition of cometary dust is generally chondritic, but with high C and N compared with CI. The cometary organic matter is mixed with minor amounts of crystalline and amorphous minerals. The most abundant crystalline minerals are ferromagnesian silicates, refractory minerals and low Ni Fe sulfides are also present. The presence of carbonates in cometary dust is still debated, but a phyllosilicate-like phase was observed in a UCAMM. GEMS phases are usually abundant. Some of the organic matter present in cometary dust particle resembles the insoluble organic matter present in primitive meteorites, but amorphous carbon and exotic (e.g. N-rich) organic phases are also present. The H isotopic composition of the organic matter traces a formation at very low temperatures, in the protosolar cloud or in the outer regions of the protoplanetary disk. The presolar dust concentration in cometary dust can reach about 1%, which is the most elevated value observed in extraterrestrial samples. The differential size distribution of cometary dust in comet trails is well represented by a power-law distribution with a mean power index N typically ranging from -3 to -4. Polarimetric and light scattering studies suggest mixtures of porous agglomerates of sub-micrometer minerals with organic matter. Cometary dust particles have low tensile strength, and low density. Report Antarc* Antarctic Université Toulouse III - Paul Sabatier: HAL-UPS Antarctic |
institution |
Open Polar |
collection |
Université Toulouse III - Paul Sabatier: HAL-UPS |
op_collection_id |
ftutoulouse3hal |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Engrand, Cecile Lasue, Jérémie Wooden, Diane H Zolensky, Mike E Chemical and physical properties of cometary dust |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Cometary dust particles are best preserved remnants of the matter present at the onset of the formation of the Solar System. Space missions, telescopic observations and laboratory analyses advanced the knowledge on the properties of cometary dust. Cometary samples were returned from comet 81P/Wild2 by the Stardust mission. The chondritic (porous) anhydrous interplanetary dust particles and chondritic porous micrometeorites, and the ultracarbonaceous Antarctic micrometeorites (UCAMMs) also show strong evidence for a cometary origin. The composition of cometary dust is generally chondritic, but with high C and N compared with CI. The cometary organic matter is mixed with minor amounts of crystalline and amorphous minerals. The most abundant crystalline minerals are ferromagnesian silicates, refractory minerals and low Ni Fe sulfides are also present. The presence of carbonates in cometary dust is still debated, but a phyllosilicate-like phase was observed in a UCAMM. GEMS phases are usually abundant. Some of the organic matter present in cometary dust particle resembles the insoluble organic matter present in primitive meteorites, but amorphous carbon and exotic (e.g. N-rich) organic phases are also present. The H isotopic composition of the organic matter traces a formation at very low temperatures, in the protosolar cloud or in the outer regions of the protoplanetary disk. The presolar dust concentration in cometary dust can reach about 1%, which is the most elevated value observed in extraterrestrial samples. The differential size distribution of cometary dust in comet trails is well represented by a power-law distribution with a mean power index N typically ranging from -3 to -4. Polarimetric and light scattering studies suggest mixtures of porous agglomerates of sub-micrometer minerals with organic matter. Cometary dust particles have low tensile strength, and low density. |
author2 |
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab) Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Institut de recherche en astrophysique et planétologie (IRAP) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) NASA Ames Research Center (ARC) NASA Johnson Space Center (JSC) NASA ANR-18-CE31-0011,COMETOR,Origine de la poussière cométaire(2018) |
format |
Report |
author |
Engrand, Cecile Lasue, Jérémie Wooden, Diane H Zolensky, Mike E |
author_facet |
Engrand, Cecile Lasue, Jérémie Wooden, Diane H Zolensky, Mike E |
author_sort |
Engrand, Cecile |
title |
Chemical and physical properties of cometary dust |
title_short |
Chemical and physical properties of cometary dust |
title_full |
Chemical and physical properties of cometary dust |
title_fullStr |
Chemical and physical properties of cometary dust |
title_full_unstemmed |
Chemical and physical properties of cometary dust |
title_sort |
chemical and physical properties of cometary dust |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04092084 https://hal.science/hal-04092084/document https://hal.science/hal-04092084/file/Engrand_2023_Cometary_dust_CometsIII%20%281%29.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
https://hal.science/hal-04092084 2023 |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/2305.03417 hal-04092084 https://hal.science/hal-04092084 https://hal.science/hal-04092084/document https://hal.science/hal-04092084/file/Engrand_2023_Cometary_dust_CometsIII%20%281%29.pdf ARXIV: 2305.03417 INSPIRE: 2657505 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1798851094663659520 |