Evidence for differentiation of the most primitive small bodies
International audience Dynamical models of Solar System evolution have suggested that the so-called P-and D-type volatile-rich asteroids formed in the outer Solar System beyond Neptune's orbit and may be genetically related to the Jupiter Trojans, the comets and small Kuiper-belt objects (KBOs)...
Published in: | Astronomy & Astrophysics |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2021
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-03184663 https://hal-insu.archives-ouvertes.fr/insu-03184663v2/document https://hal-insu.archives-ouvertes.fr/insu-03184663v2/file/aa40342-21.pdf https://doi.org/10.1051/0004-6361/202140342 |
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English |
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Minor planets asteroids Sylvia Kuiper belt [SDU]Sciences of the Universe [physics] |
spellingShingle |
Minor planets asteroids Sylvia Kuiper belt [SDU]Sciences of the Universe [physics] Carry, Benoit Vernazza, P. Vachier, F. Neveu, M. Berthier, J. Hanuš, J. Ferrais, M. Jorda, Laurent Marsset, M. Viikinkoski, M. Bartczak, P. Behrend, R. Benkhaldoun, Z. Birlan, M Castillo-Rogez, J. Cipriani, F. Colas, F Drouard, A. Dudziński, G., Desmars, J. Dumas, C. Ďurech, J. Fetick, R. Fusco, T. Grice, J. Jehin, E. Kaasalainen, M. Kryszczynska, A. Lamy, Philippe Marchis, F. Marciniak, A. Michalowski, T. Michel, P. Pajuelo, M. Podlewska-Gaca, E. Rambaux, N. Santana-Ros, T. Storrs, A. Tanga, P. Vigan, A. Warner, B. Wieczorek, M. Witasse, Olivier Yang, Bin Evidence for differentiation of the most primitive small bodies |
topic_facet |
Minor planets asteroids Sylvia Kuiper belt [SDU]Sciences of the Universe [physics] |
description |
International audience Dynamical models of Solar System evolution have suggested that the so-called P-and D-type volatile-rich asteroids formed in the outer Solar System beyond Neptune's orbit and may be genetically related to the Jupiter Trojans, the comets and small Kuiper-belt objects (KBOs). Indeed, the spectral properties of P/D-type asteroids resemble that of anhydrous cometary dust. We aim at gaining insights into the above classes of bodies by characterizing the internal structure of a large P/D-type asteroid. Methods. We report high-angular-resolution imaging observations of P-type asteroid (87) Sylvia with VLT/SPHERE. These images were used to reconstruct the 3D shape of Sylvia. Our images together with those obtained in the past with large ground-based telescopes were used to study the dynamics of its two satellites. We also model Sylvia's thermal evolution. The shape of Sylvia appears flattened and elongated (a/b∼1.45 a/c∼1.84). We derive a volume-equivalent diameter of 271 ± 5 km, and a low density of 1378 ± 45 kg•m −3. The two satellites orbit Sylvia on circular, equatorial orbits. The oblateness of Sylvia should imply a detectable nodal precession which contrasts with the fully-Keplerian dynamics of its two satellites. This reveals an inhomogeneous internal structure, suggesting that Sylvia is differentiated. Sylvia's low density and differentiated interior can be explained by partial melting and mass redistribution through water percolation. The outer shell would be composed of material similar to interplanetary dust particles (IDPs) and the core similar to aqueously altered IDPs or carbonaceous chondrite meteorites such as the Tagish Lake meteorite. Numerical simulations of the thermal evolution of Sylvia show that for a body of such size, partial melting was unavoidable due to the decay of long-lived radionuclides. In addition, we show that bodies as small as 130-150 km in diameter should have followed a similar thermal evolution, while smaller objects, such as comets and the KBO Arrokoth, ... |
author2 |
Joseph Louis LAGRANGE (LAGRANGE) Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (. - 2019) (UNS) COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Astrophysique de Marseille (LAM) Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) University of Maryland College Park University of Maryland System NASA Goddard Space Flight Center (GSFC) Institute of Astronomy Prague Charles University Prague (CU) Space Sciences, Technologies and Astrophysics Research Institute (STAR) Université de Liège Department of Earth, Atmospheric and Planetary Sciences MIT, Cambridge (EAPS) Massachusetts Institute of Technology (MIT) Department of Mathematics Tampere Tampere University of Technology Tampere (TUT) Astronomical Observatory Poznan Adam Mickiewicz University in Poznań (UAM) Geneva Observatory University of Geneva Switzerland Oukaimeden Observatory Université Cadi Ayyad Marrakech (UCA) Astronomical Institute of Romanian Academy Romanian Academy Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) European Space Research and Technology Centre (ESTEC) European Space Agency (ESA) Institut Polytechnique des Sciences Avancées (IPSA) Thirty Meter Telescope Observatory The Open University Milton Keynes (OU) University of Tampere Finland HELIOS - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS) SETI Institute Pontificia Universidad Católica del Perú (PUCP) Institute of Physics Szczecin University of Szczecin Universidad de Alicante Institut de Ciencies del Cosmos (ICCUB) Universitat de Barcelona (UB) Towson University Towson, MD, United States Center for Solar System Studies (CS3) European Southern Observatory (ESO) |
format |
Article in Journal/Newspaper |
author |
Carry, Benoit Vernazza, P. Vachier, F. Neveu, M. Berthier, J. Hanuš, J. Ferrais, M. Jorda, Laurent Marsset, M. Viikinkoski, M. Bartczak, P. Behrend, R. Benkhaldoun, Z. Birlan, M Castillo-Rogez, J. Cipriani, F. Colas, F Drouard, A. Dudziński, G., Desmars, J. Dumas, C. Ďurech, J. Fetick, R. Fusco, T. Grice, J. Jehin, E. Kaasalainen, M. Kryszczynska, A. Lamy, Philippe Marchis, F. Marciniak, A. Michalowski, T. Michel, P. Pajuelo, M. Podlewska-Gaca, E. Rambaux, N. Santana-Ros, T. Storrs, A. Tanga, P. Vigan, A. Warner, B. Wieczorek, M. Witasse, Olivier Yang, Bin |
author_facet |
Carry, Benoit Vernazza, P. Vachier, F. Neveu, M. Berthier, J. Hanuš, J. Ferrais, M. Jorda, Laurent Marsset, M. Viikinkoski, M. Bartczak, P. Behrend, R. Benkhaldoun, Z. Birlan, M Castillo-Rogez, J. Cipriani, F. Colas, F Drouard, A. Dudziński, G., Desmars, J. Dumas, C. Ďurech, J. Fetick, R. Fusco, T. Grice, J. Jehin, E. Kaasalainen, M. Kryszczynska, A. Lamy, Philippe Marchis, F. Marciniak, A. Michalowski, T. Michel, P. Pajuelo, M. Podlewska-Gaca, E. Rambaux, N. Santana-Ros, T. Storrs, A. Tanga, P. Vigan, A. Warner, B. Wieczorek, M. Witasse, Olivier Yang, Bin |
author_sort |
Carry, Benoit |
title |
Evidence for differentiation of the most primitive small bodies |
title_short |
Evidence for differentiation of the most primitive small bodies |
title_full |
Evidence for differentiation of the most primitive small bodies |
title_fullStr |
Evidence for differentiation of the most primitive small bodies |
title_full_unstemmed |
Evidence for differentiation of the most primitive small bodies |
title_sort |
evidence for differentiation of the most primitive small bodies |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03184663 https://hal-insu.archives-ouvertes.fr/insu-03184663v2/document https://hal-insu.archives-ouvertes.fr/insu-03184663v2/file/aa40342-21.pdf https://doi.org/10.1051/0004-6361/202140342 |
long_lat |
ENVELOPE(101.133,101.133,-66.117,-66.117) ENVELOPE(-134.272,-134.272,60.313,60.313) ENVELOPE(-134.233,-134.233,59.717,59.717) |
geographic |
Jupiter Tagish Tagish Lake |
geographic_facet |
Jupiter Tagish Tagish Lake |
genre |
Tagish |
genre_facet |
Tagish |
op_source |
ISSN: 0004-6361 EISSN: 1432-0756 Astronomy and Astrophysics - A&A https://hal-insu.archives-ouvertes.fr/insu-03184663 Astronomy and Astrophysics - A&A, EDP Sciences, 2021, 650, A129 (15pp.). ⟨10.1051/0004-6361/202140342⟩ |
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info:eu-repo/semantics/altIdentifier/arxiv/2103.06349 info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202140342 insu-03184663 https://hal-insu.archives-ouvertes.fr/insu-03184663 https://hal-insu.archives-ouvertes.fr/insu-03184663v2/document https://hal-insu.archives-ouvertes.fr/insu-03184663v2/file/aa40342-21.pdf ARXIV: 2103.06349 BIBCODE: 2021A&A.650A.129C doi:10.1051/0004-6361/202140342 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1051/0004-6361/202140342 |
container_title |
Astronomy & Astrophysics |
container_volume |
650 |
container_start_page |
A129 |
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spelling |
ftccsdartic:oai:HAL:insu-03184663v2 2023-05-15T18:30:06+02:00 Evidence for differentiation of the most primitive small bodies Carry, Benoit Vernazza, P. Vachier, F. Neveu, M. Berthier, J. Hanuš, J. Ferrais, M. Jorda, Laurent Marsset, M. Viikinkoski, M. Bartczak, P. Behrend, R. Benkhaldoun, Z. Birlan, M Castillo-Rogez, J. Cipriani, F. Colas, F Drouard, A. Dudziński, G., Desmars, J. Dumas, C. Ďurech, J. Fetick, R. Fusco, T. Grice, J. Jehin, E. Kaasalainen, M. Kryszczynska, A. Lamy, Philippe Marchis, F. Marciniak, A. Michalowski, T. Michel, P. Pajuelo, M. Podlewska-Gaca, E. Rambaux, N. Santana-Ros, T. Storrs, A. Tanga, P. Vigan, A. Warner, B. Wieczorek, M. Witasse, Olivier Yang, Bin Joseph Louis LAGRANGE (LAGRANGE) Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (. - 2019) (UNS) COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'Astrophysique de Marseille (LAM) Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS) Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) University of Maryland College Park University of Maryland System NASA Goddard Space Flight Center (GSFC) Institute of Astronomy Prague Charles University Prague (CU) Space Sciences, Technologies and Astrophysics Research Institute (STAR) Université de Liège Department of Earth, Atmospheric and Planetary Sciences MIT, Cambridge (EAPS) Massachusetts Institute of Technology (MIT) Department of Mathematics Tampere Tampere University of Technology Tampere (TUT) Astronomical Observatory Poznan Adam Mickiewicz University in Poznań (UAM) Geneva Observatory University of Geneva Switzerland Oukaimeden Observatory Université Cadi Ayyad Marrakech (UCA) Astronomical Institute of Romanian Academy Romanian Academy Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) European Space Research and Technology Centre (ESTEC) European Space Agency (ESA) Institut Polytechnique des Sciences Avancées (IPSA) Thirty Meter Telescope Observatory The Open University Milton Keynes (OU) University of Tampere Finland HELIOS - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS) SETI Institute Pontificia Universidad Católica del Perú (PUCP) Institute of Physics Szczecin University of Szczecin Universidad de Alicante Institut de Ciencies del Cosmos (ICCUB) Universitat de Barcelona (UB) Towson University Towson, MD, United States Center for Solar System Studies (CS3) European Southern Observatory (ESO) 2021 https://hal-insu.archives-ouvertes.fr/insu-03184663 https://hal-insu.archives-ouvertes.fr/insu-03184663v2/document https://hal-insu.archives-ouvertes.fr/insu-03184663v2/file/aa40342-21.pdf https://doi.org/10.1051/0004-6361/202140342 en eng HAL CCSD EDP Sciences info:eu-repo/semantics/altIdentifier/arxiv/2103.06349 info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202140342 insu-03184663 https://hal-insu.archives-ouvertes.fr/insu-03184663 https://hal-insu.archives-ouvertes.fr/insu-03184663v2/document https://hal-insu.archives-ouvertes.fr/insu-03184663v2/file/aa40342-21.pdf ARXIV: 2103.06349 BIBCODE: 2021A&A.650A.129C doi:10.1051/0004-6361/202140342 info:eu-repo/semantics/OpenAccess ISSN: 0004-6361 EISSN: 1432-0756 Astronomy and Astrophysics - A&A https://hal-insu.archives-ouvertes.fr/insu-03184663 Astronomy and Astrophysics - A&A, EDP Sciences, 2021, 650, A129 (15pp.). ⟨10.1051/0004-6361/202140342⟩ Minor planets asteroids Sylvia Kuiper belt [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.1051/0004-6361/202140342 2022-01-09T00:14:37Z International audience Dynamical models of Solar System evolution have suggested that the so-called P-and D-type volatile-rich asteroids formed in the outer Solar System beyond Neptune's orbit and may be genetically related to the Jupiter Trojans, the comets and small Kuiper-belt objects (KBOs). Indeed, the spectral properties of P/D-type asteroids resemble that of anhydrous cometary dust. We aim at gaining insights into the above classes of bodies by characterizing the internal structure of a large P/D-type asteroid. Methods. We report high-angular-resolution imaging observations of P-type asteroid (87) Sylvia with VLT/SPHERE. These images were used to reconstruct the 3D shape of Sylvia. Our images together with those obtained in the past with large ground-based telescopes were used to study the dynamics of its two satellites. We also model Sylvia's thermal evolution. The shape of Sylvia appears flattened and elongated (a/b∼1.45 a/c∼1.84). We derive a volume-equivalent diameter of 271 ± 5 km, and a low density of 1378 ± 45 kg•m −3. The two satellites orbit Sylvia on circular, equatorial orbits. The oblateness of Sylvia should imply a detectable nodal precession which contrasts with the fully-Keplerian dynamics of its two satellites. This reveals an inhomogeneous internal structure, suggesting that Sylvia is differentiated. Sylvia's low density and differentiated interior can be explained by partial melting and mass redistribution through water percolation. The outer shell would be composed of material similar to interplanetary dust particles (IDPs) and the core similar to aqueously altered IDPs or carbonaceous chondrite meteorites such as the Tagish Lake meteorite. Numerical simulations of the thermal evolution of Sylvia show that for a body of such size, partial melting was unavoidable due to the decay of long-lived radionuclides. In addition, we show that bodies as small as 130-150 km in diameter should have followed a similar thermal evolution, while smaller objects, such as comets and the KBO Arrokoth, ... Article in Journal/Newspaper Tagish Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Jupiter ENVELOPE(101.133,101.133,-66.117,-66.117) Tagish ENVELOPE(-134.272,-134.272,60.313,60.313) Tagish Lake ENVELOPE(-134.233,-134.233,59.717,59.717) Astronomy & Astrophysics 650 A129 |