Space Weathering Affects the Remote Near-IR ...
Type de document :
Article dans une revue scientifique
DOI :
URL permanente :
Titre :
Space Weathering Affects the Remote Near-IR Identification of Phyllosilicates
Auteur(s) :
Rubino, Stefano [Auteur]
Institut d'astrophysique spatiale [IAS]
Lantz, Cateline [Auteur]
Institut d'astrophysique spatiale [IAS]
Baklouti, Donia [Auteur]
Institut d'astrophysique spatiale [IAS]
Leroux, Hugues [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Borondics, Ferenc [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Brunetto, Rosario [Auteur]
Institut d'astrophysique spatiale [IAS]
Institut d'astrophysique spatiale [IAS]
Lantz, Cateline [Auteur]
Institut d'astrophysique spatiale [IAS]
Baklouti, Donia [Auteur]
Institut d'astrophysique spatiale [IAS]
Leroux, Hugues [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Borondics, Ferenc [Auteur]
Synchrotron SOLEIL [SSOLEIL]
Brunetto, Rosario [Auteur]
Institut d'astrophysique spatiale [IAS]
Titre de la revue :
The Planetary Science Journal
Nom court de la revue :
Planet. Sci. J
Numéro :
1
Pagination :
61
Éditeur :
American Astronomical Society
Date de publication :
2020-11-06
ISSN :
2632-3338
Mot(s)-clé(s) en anglais :
Space weather
Spectroscopy
Near infrared astronomy
Infrared astronomy
Laboratory astrophysics
Small solar system bodies
Surface composition
Surface processes
Spectroscopy
Near infrared astronomy
Infrared astronomy
Laboratory astrophysics
Small solar system bodies
Surface composition
Surface processes
Discipline(s) HAL :
Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Physique [physics]/Géophysique [physics.geo-ph]
Physique [physics]/Astrophysique [astro-ph]
Planète et Univers [physics]/Astrophysique [astro-ph]
Planète et Univers [physics]/Sciences de la Terre
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Physique [physics]/Géophysique [physics.geo-ph]
Physique [physics]/Astrophysique [astro-ph]
Planète et Univers [physics]/Astrophysique [astro-ph]
Planète et Univers [physics]/Sciences de la Terre
Résumé en anglais : [en]
Near-infrared (NIR) spectrometers on board current sample return missions Hayabusa2 and the Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer (OSIRIS-REx) from primitive bodies detected the ...
Lire la suite >Near-infrared (NIR) spectrometers on board current sample return missions Hayabusa2 and the Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer (OSIRIS-REx) from primitive bodies detected the presence of hydrated silicates on the surface of asteroids Ryugu and Bennu, respectively. These detections relied upon the study of the 2.7 μm OH-stretching spectral feature, whose peak position is related to the composition and structure of minerals. However, space weathering might alter the band profile, depth and position, thus complicating the interpretation of remote sensing data. In order to better understand these processes and provide support to space missions, we performed ion bombardment experiments on serpentine and saponite analogs. These two phyllosilicates are among the dominant mineral phases found in hydrated carbonaceous chondrites, which are possible analogs to surface materials observed on these primitive asteroids. We studied the behavior of the 2.7 μm band as a function of ion fluence and found that the evolution of the phyllosilicate depends on its nature. For the saponite sample, the band is only slightly affected by ion bombardment, while for both serpentine samples it shifts toward longer wavelengths. For both samples, peak intensity and width is not strongly affected. The band shift for serpentine indicates that space weathering introduces a bias in the interpretation of NIR remote sensing observations of phyllosilicates. The shift observed in our experiments can be detected by instruments on board Hayabusa2 and OSIRIS-REx, depending on the geometry of observation. Our findings provide support to the interpretation of such data.Lire moins >
Lire la suite >Near-infrared (NIR) spectrometers on board current sample return missions Hayabusa2 and the Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer (OSIRIS-REx) from primitive bodies detected the presence of hydrated silicates on the surface of asteroids Ryugu and Bennu, respectively. These detections relied upon the study of the 2.7 μm OH-stretching spectral feature, whose peak position is related to the composition and structure of minerals. However, space weathering might alter the band profile, depth and position, thus complicating the interpretation of remote sensing data. In order to better understand these processes and provide support to space missions, we performed ion bombardment experiments on serpentine and saponite analogs. These two phyllosilicates are among the dominant mineral phases found in hydrated carbonaceous chondrites, which are possible analogs to surface materials observed on these primitive asteroids. We studied the behavior of the 2.7 μm band as a function of ion fluence and found that the evolution of the phyllosilicate depends on its nature. For the saponite sample, the band is only slightly affected by ion bombardment, while for both serpentine samples it shifts toward longer wavelengths. For both samples, peak intensity and width is not strongly affected. The band shift for serpentine indicates that space weathering introduces a bias in the interpretation of NIR remote sensing observations of phyllosilicates. The shift observed in our experiments can be detected by instruments on board Hayabusa2 and OSIRIS-REx, depending on the geometry of observation. Our findings provide support to the interpretation of such data.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
Université de Lille
CNRS
INRA
ENSCL
CNRS
INRA
ENSCL
Collections :
Équipe(s) de recherche :
Matériaux Terrestres et Planétaires
Date de dépôt :
2021-02-05T11:13:00Z
2021-02-08T09:53:35Z
2021-02-08T09:53:35Z
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