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Mid-infrared emissivity of partially dehydrated asteroid (162173) Ryugu shows strong signs of aqueous alteration

Hamm, Maximilian and Grott, Matthias and Senshu, H. and Knollenberg, Jörg and de Wiljes, J. and Hamilton, Victoria E. and Scholten, Frank and Matz, K-D and Bates, H.C. and Maturilli, Alessandro and Shimaki, Y. and Sakatani, N. and Neumann, Wladimir and Okada, T. and Preusker, Frank and Elgner, Stephan and Helbert, Jörn and Kührt, Ekkehard and Ho, Tra-Mi and Tanaka, S. and Jaumann, R. and Sugita, S. (2022) Mid-infrared emissivity of partially dehydrated asteroid (162173) Ryugu shows strong signs of aqueous alteration. Nature Communications, 13 (364), pp. 1-12. Nature Publishing Group. doi: 10.1038/s41467-022-28051-y. ISSN 2041-1723.

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Official URL: https://www.nature.com/articles/s41467-022-28051-y

Abstract

The near-Earth asteroid (162173) Ryugu, the target of Hayabusa2 space mission, was observed via both orbiter and the lander instruments. The infrared radiometer on the MASCOT lander (MARA) is the only instrument providing spectrally resolved mid-infrared (MIR) data, which is crucial for establishing a link between the asteroid material and meteorites found on Earth. Earlier studies revealed that the single boulder investigated by the lander belongs to the most common type found on Ryugu. Here we show the spectral variation of Ryugu’s emissivity using the complete set of in-situ MIR data and compare it to those of various carbonaceous chondritic meteorites, revealing similarities to the most aqueously altered ones, as well as to asteroid (101955) Bennu. The results show that Ryugu experienced strong aqueous alteration prior to any dehydration.

Item URL in elib:https://elib.dlr.de/148679/
Document Type:Article
Title:Mid-infrared emissivity of partially dehydrated asteroid (162173) Ryugu shows strong signs of aqueous alteration
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hamm, Maximilianmaximilian.hamm (at) dlr.deUNSPECIFIED
Grott, MatthiasMatthias.Grott (at) dlr.deUNSPECIFIED
Senshu, H.Institute of Space and Astronautical Science , Japan Aerospace Exploration Agency (ISAS / JAXA) ( 3 - 1 - 1 Yoshinodai, Chuo - Ku, Sa gamihara 2 52 - 5210 , JapanUNSPECIFIED
Knollenberg, JörgJoerg.Knollenberg (at) dlr.deUNSPECIFIED
de Wiljes, J.Institute for Mathematics, University of Potsdam, Karl-Liebknecht-Str. 24-25, D-14476 Potsdam-Golm, GermanyUNSPECIFIED
Hamilton, Victoria E.Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USAUNSPECIFIED
Scholten, FrankFrank.Scholten (at) dlr.deUNSPECIFIED
Matz, K-Dklaus-dieter.matz (at) dlr.deUNSPECIFIED
Bates, H.C.Department of Earth Science, Natural History Museum, London, UKUNSPECIFIED
Maturilli, AlessandroAlessandro.Maturilli (at) dlr.dehttps://orcid.org/0000-0003-4613-9799
Shimaki, Y.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (ISAS / JAXA) 3-1-1 Yoshinodai, Chuo-Ku, Sagamihara 252-5210, JapanUNSPECIFIED
Sakatani, N.institute of space and astronautical science , japan aerospace exploration agency (isas / jaxa) ( 3 - 1 - 1 yoshinodai, chuo - ku, sa gamihara 2 52 - 5210 , japanUNSPECIFIED
Neumann, WladimirWladimir.Neumann (at) dlr.deUNSPECIFIED
Okada, T.Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, JapanUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Elgner, StephanStephan.Elgner (at) dlr.deUNSPECIFIED
Helbert, JörnJoern.Helbert (at) dlr.dehttps://orcid.org/0000-0001-5346-9505
Kührt, EkkehardEkkehard.Kuehrt (at) dlr.deUNSPECIFIED
Ho, Tra-MiTra-Mi.Ho (at) dlr.deUNSPECIFIED
Tanaka, S.Institute of Space and Astronautical Science , Japan Aerospace Exploration Agency (ISAS / JAXA) ( 3 - 1 - 1 Yoshinodai, Chuo - Ku, Sa gamihara 2 52 - 5210 , JapanUNSPECIFIED
Jaumann, R.DLR, Berlin - FU BerlinUNSPECIFIED
Sugita, S.University of Tokyo, Tokyo, JapanUNSPECIFIED
Date:2022
Journal or Publication Title:Nature Communications
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:13
DOI :10.1038/s41467-022-28051-y
Page Range:pp. 1-12
Publisher:Nature Publishing Group
ISSN:2041-1723
Status:Published
Keywords:MASCOT MARA Ryugu Asteroid Regolith Meteorite Chondrite
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project MASCOT - Science
Location: Berlin-Adlershof , Bremen
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Institute of Planetary Research > Planetary Sensor Systems
Institute of Planetary Research > Planetary Geology
Institute of Planetary Research > Planetary Laboratories
Institute of Planetary Research > Planetary Geodesy
Institute of Space Systems > Systems Engineering and Project Office
Institute of Optical Sensor Systems
Deposited By: Grott, Dr.rer.nat. Matthias
Deposited On:17 Feb 2022 10:00
Last Modified:24 May 2022 23:48

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