Comparing the reflectivity of ungrouped carbonaceous chondrites with those of short-period comets like 2P/Encke

Aims. The existence of asteroid complexes produced by the disruption of these comets suggests that evolved comets could also produce high-strength materials able to survive as meteorites. We chose as an example comet 2P/Encke, one of the largest object of the so-called Taurid complex. We compare the...

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Autores: Tanbakouei, S., Trigo-Rodríguez, Josep María, Blum, Jürgen, Williams, Iwan P., Llorca, Jordi
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2020
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/230870
Acesso em linha:http://hdl.handle.net/10261/230870
Access Level:Acceso aberto
Palavra-chave:Comets: general
Meteorites, meteors, meteoroids
Ultraviolet: planetary systems
Techniques: spectroscopic
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spelling Comparing the reflectivity of ungrouped carbonaceous chondrites with those of short-period comets like 2P/EnckeTanbakouei, S.Trigo-Rodríguez, Josep MaríaBlum, JürgenWilliams, Iwan P.Llorca, JordiComets: generalMeteorites, meteors, meteoroidsUltraviolet: planetary systemsTechniques: spectroscopicAims. The existence of asteroid complexes produced by the disruption of these comets suggests that evolved comets could also produce high-strength materials able to survive as meteorites. We chose as an example comet 2P/Encke, one of the largest object of the so-called Taurid complex. We compare the reflectance spectrum of this comet with the laboratory spectra of some Antarctic ungrouped carbonaceous chondrites to investigate whether some of these meteorites could be associated with evolved comets. Methods. We compared the spectral behaviour of 2P/Encke with laboratory spectra of carbonaceous chondrites. Different specimens of the common carbonaceous chondrite groups do not match the overall features and slope of the comet 2P/Encke. By testing anomalous carbonaceous chondrites, we found two meteorites: Meteorite Hills 01017 and Grosvenor Mountains 95551, which could be good proxies for the dark materials that formed this short-period comet. We hypothesise that these two meteorites could be rare surviving samples, either from the Taurid complex or another compositionally similar body. In any case, it is difficult to get rid of the effects of terrestrial weathering in these Antarctic finds, and further studies are needed. A future sample return from the so-called dormant comets could also be useful to establish a ground truth on the materials forming evolved short-period comets. Results. As a natural outcome, we think that identifying good proxies of 2P/Encke-forming materials might have interesting implications for future sample-return missions to evolved, potentially dormant, or extinct comets. Understanding the compositional nature of evolved comets is particularly relevant in the context of the future mitigation of impact hazard from these dark and dangerous projectiles.J.M.T.R. and S.T. acknowledge financial support from the Spanish Ministry (PGC2018-097374-B-I00, PI: JMTR). J.L.L. is grateful to ICREA Academia program and funding from Generalitat de Catalunya (2017 SGR 128). US Antarctic meteorite samples are recovered by the Antarctic Search for Meteorites (ANSMET) program which has been funded by NSF and NASA, and characterized and curated by the Department of Mineral Sciences of the Smithsonian Institution and Astromaterials Acquisition and Curation Office at NASA Johnson Space Center.EDP SciencesMinisterio de Ciencia, Innovación y Universidades (España)Generalitat de CatalunyaNational Science Foundation (US)NASAConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2021202120202021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/230870reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-097374-B-I00http://doi.org/10.1051/0004-6361/202037996Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2308702026-05-22T06:33:51Z
dc.title.none.fl_str_mv Comparing the reflectivity of ungrouped carbonaceous chondrites with those of short-period comets like 2P/Encke
title Comparing the reflectivity of ungrouped carbonaceous chondrites with those of short-period comets like 2P/Encke
spellingShingle Comparing the reflectivity of ungrouped carbonaceous chondrites with those of short-period comets like 2P/Encke
Tanbakouei, S.
Comets: general
Meteorites, meteors, meteoroids
Ultraviolet: planetary systems
Techniques: spectroscopic
title_short Comparing the reflectivity of ungrouped carbonaceous chondrites with those of short-period comets like 2P/Encke
title_full Comparing the reflectivity of ungrouped carbonaceous chondrites with those of short-period comets like 2P/Encke
title_fullStr Comparing the reflectivity of ungrouped carbonaceous chondrites with those of short-period comets like 2P/Encke
title_full_unstemmed Comparing the reflectivity of ungrouped carbonaceous chondrites with those of short-period comets like 2P/Encke
title_sort Comparing the reflectivity of ungrouped carbonaceous chondrites with those of short-period comets like 2P/Encke
dc.creator.none.fl_str_mv Tanbakouei, S.
Trigo-Rodríguez, Josep María
Blum, Jürgen
Williams, Iwan P.
Llorca, Jordi
author Tanbakouei, S.
author_facet Tanbakouei, S.
Trigo-Rodríguez, Josep María
Blum, Jürgen
Williams, Iwan P.
Llorca, Jordi
author_role author
author2 Trigo-Rodríguez, Josep María
Blum, Jürgen
Williams, Iwan P.
Llorca, Jordi
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Generalitat de Catalunya
National Science Foundation (US)
NASA
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Comets: general
Meteorites, meteors, meteoroids
Ultraviolet: planetary systems
Techniques: spectroscopic
topic Comets: general
Meteorites, meteors, meteoroids
Ultraviolet: planetary systems
Techniques: spectroscopic
description Aims. The existence of asteroid complexes produced by the disruption of these comets suggests that evolved comets could also produce high-strength materials able to survive as meteorites. We chose as an example comet 2P/Encke, one of the largest object of the so-called Taurid complex. We compare the reflectance spectrum of this comet with the laboratory spectra of some Antarctic ungrouped carbonaceous chondrites to investigate whether some of these meteorites could be associated with evolved comets. Methods. We compared the spectral behaviour of 2P/Encke with laboratory spectra of carbonaceous chondrites. Different specimens of the common carbonaceous chondrite groups do not match the overall features and slope of the comet 2P/Encke. By testing anomalous carbonaceous chondrites, we found two meteorites: Meteorite Hills 01017 and Grosvenor Mountains 95551, which could be good proxies for the dark materials that formed this short-period comet. We hypothesise that these two meteorites could be rare surviving samples, either from the Taurid complex or another compositionally similar body. In any case, it is difficult to get rid of the effects of terrestrial weathering in these Antarctic finds, and further studies are needed. A future sample return from the so-called dormant comets could also be useful to establish a ground truth on the materials forming evolved short-period comets. Results. As a natural outcome, we think that identifying good proxies of 2P/Encke-forming materials might have interesting implications for future sample-return missions to evolved, potentially dormant, or extinct comets. Understanding the compositional nature of evolved comets is particularly relevant in the context of the future mitigation of impact hazard from these dark and dangerous projectiles.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/230870
url http://hdl.handle.net/10261/230870
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-097374-B-I00
http://doi.org/10.1051/0004-6361/202037996
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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