Low-phase spectral reflectance and equivalent “geometric albedo” of meteorites powders
International audience Generally, the reflectance of a particulate surface depends on the phase angle at which it is observed. This is true for laboratory measurements on powders of natural materials as well as remote observations of Solar System surfaces. Here, we measured the dependences of reflec...
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Language: | English |
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HAL CCSD
2021
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Online Access: | https://hal.science/hal-03096605 https://hal.science/hal-03096605/document https://hal.science/hal-03096605/file/S0019103520304152.pdf https://doi.org/10.1016/j.icarus.2020.114066 |
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Institut national des sciences de l'Univers: HAL-INSU |
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language |
English |
topic |
Reflectance spectra measurements meteorites Carbonaceous chondrites Ordinary chondrites HED meteorites geometric albedo [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] |
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Reflectance spectra measurements meteorites Carbonaceous chondrites Ordinary chondrites HED meteorites geometric albedo [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] Beck, P. Schmitt, B Potin, S. Pommerol, A. Brissaud, O. Low-phase spectral reflectance and equivalent “geometric albedo” of meteorites powders |
topic_facet |
Reflectance spectra measurements meteorites Carbonaceous chondrites Ordinary chondrites HED meteorites geometric albedo [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] |
description |
International audience Generally, the reflectance of a particulate surface depends on the phase angle at which it is observed. This is true for laboratory measurements on powders of natural materials as well as remote observations of Solar System surfaces. Here, we measured the dependences of reflectance spectra with phase angles, of a suite of 72 meteorites in the 400–2600 nm range. The 10–30◦ phase angle range is investigated in order to study the contribution of Shadow Hiding Opposition Effect (SHOE) to the phase behavior. The behavior is then extrapolated to phase angle of 0◦ using a polynomial fit, in order to provide grounds for comparison across meteorite groups (enabling to remove the contribution of shadows to reflectance) as well as to provide “equivalent albedo” values that should be comparable to geometric albedo values derived for small bodies. We find a general behavior of increasing strength of the SHOE with lower reflectance values (whether between samples or for a given samples with absorption features). This trend provides a first order way to correct any reflectance spectra of meteorite powders measured under standard conditions (g = 30◦) from the contribution of shadows. The g = 0◦ calculated reflectance and equivalent albedos are then compared to typical values of albedos for main-belt asteroids. This reveals that among carbonaceous chondrites only Tagish Lake group, CI, and CM chondrites have equivalent albedo compatible with C- and D-type asteroids. On the other hand equivalent albedo derived with CO, CR and CK chondrites are compatible with L- and K-type asteroids. The equivalent albedo derived for ordinary chondrites is related to petrographic types, with low-grade petrographic type (type 3.6 and less) being generally darker that higher petrographic types. This works provides a framework for further understanding of the asteroids meteorite linkage in particular when combining with colors and spectroscopy. |
author2 |
Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ) Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France Universität Bern / University of Bern (UNIBE) |
format |
Article in Journal/Newspaper |
author |
Beck, P. Schmitt, B Potin, S. Pommerol, A. Brissaud, O. |
author_facet |
Beck, P. Schmitt, B Potin, S. Pommerol, A. Brissaud, O. |
author_sort |
Beck, P. |
title |
Low-phase spectral reflectance and equivalent “geometric albedo” of meteorites powders |
title_short |
Low-phase spectral reflectance and equivalent “geometric albedo” of meteorites powders |
title_full |
Low-phase spectral reflectance and equivalent “geometric albedo” of meteorites powders |
title_fullStr |
Low-phase spectral reflectance and equivalent “geometric albedo” of meteorites powders |
title_full_unstemmed |
Low-phase spectral reflectance and equivalent “geometric albedo” of meteorites powders |
title_sort |
low-phase spectral reflectance and equivalent “geometric albedo” of meteorites powders |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03096605 https://hal.science/hal-03096605/document https://hal.science/hal-03096605/file/S0019103520304152.pdf https://doi.org/10.1016/j.icarus.2020.114066 |
genre |
Tagish |
genre_facet |
Tagish |
op_source |
ISSN: 0019-1035 EISSN: 1090-2643 Icarus https://hal.science/hal-03096605 Icarus, 2021, 354, pp.114066. ⟨10.1016/j.icarus.2020.114066⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/arxiv/2009.10496 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2020.114066 hal-03096605 https://hal.science/hal-03096605 https://hal.science/hal-03096605/document https://hal.science/hal-03096605/file/S0019103520304152.pdf ARXIV: 2009.10496 doi:10.1016/j.icarus.2020.114066 PII: S0019-1035(20)30415-2 |
op_rights |
http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.icarus.2020.114066 |
container_title |
Icarus |
container_volume |
354 |
container_start_page |
114066 |
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1796932686022967296 |
spelling |
ftinsu:oai:HAL:hal-03096605v1 2024-04-21T08:12:35+00:00 Low-phase spectral reflectance and equivalent “geometric albedo” of meteorites powders Beck, P. Schmitt, B Potin, S. Pommerol, A. Brissaud, O. Institut de Planétologie et d'Astrophysique de Grenoble (IPAG) Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Grenoble (OSUG ) Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)-Météo-France Universität Bern / University of Bern (UNIBE) 2021-01 https://hal.science/hal-03096605 https://hal.science/hal-03096605/document https://hal.science/hal-03096605/file/S0019103520304152.pdf https://doi.org/10.1016/j.icarus.2020.114066 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/arxiv/2009.10496 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2020.114066 hal-03096605 https://hal.science/hal-03096605 https://hal.science/hal-03096605/document https://hal.science/hal-03096605/file/S0019103520304152.pdf ARXIV: 2009.10496 doi:10.1016/j.icarus.2020.114066 PII: S0019-1035(20)30415-2 http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess ISSN: 0019-1035 EISSN: 1090-2643 Icarus https://hal.science/hal-03096605 Icarus, 2021, 354, pp.114066. ⟨10.1016/j.icarus.2020.114066⟩ Reflectance spectra measurements meteorites Carbonaceous chondrites Ordinary chondrites HED meteorites geometric albedo [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] info:eu-repo/semantics/article Journal articles 2021 ftinsu https://doi.org/10.1016/j.icarus.2020.114066 2024-04-05T00:31:43Z International audience Generally, the reflectance of a particulate surface depends on the phase angle at which it is observed. This is true for laboratory measurements on powders of natural materials as well as remote observations of Solar System surfaces. Here, we measured the dependences of reflectance spectra with phase angles, of a suite of 72 meteorites in the 400–2600 nm range. The 10–30◦ phase angle range is investigated in order to study the contribution of Shadow Hiding Opposition Effect (SHOE) to the phase behavior. The behavior is then extrapolated to phase angle of 0◦ using a polynomial fit, in order to provide grounds for comparison across meteorite groups (enabling to remove the contribution of shadows to reflectance) as well as to provide “equivalent albedo” values that should be comparable to geometric albedo values derived for small bodies. We find a general behavior of increasing strength of the SHOE with lower reflectance values (whether between samples or for a given samples with absorption features). This trend provides a first order way to correct any reflectance spectra of meteorite powders measured under standard conditions (g = 30◦) from the contribution of shadows. The g = 0◦ calculated reflectance and equivalent albedos are then compared to typical values of albedos for main-belt asteroids. This reveals that among carbonaceous chondrites only Tagish Lake group, CI, and CM chondrites have equivalent albedo compatible with C- and D-type asteroids. On the other hand equivalent albedo derived with CO, CR and CK chondrites are compatible with L- and K-type asteroids. The equivalent albedo derived for ordinary chondrites is related to petrographic types, with low-grade petrographic type (type 3.6 and less) being generally darker that higher petrographic types. This works provides a framework for further understanding of the asteroids meteorite linkage in particular when combining with colors and spectroscopy. Article in Journal/Newspaper Tagish Institut national des sciences de l'Univers: HAL-INSU Icarus 354 114066 |