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Bridging the gap - linking remote sensing, in-situ and laboratory spectroscopy

Maturilli, Alessandro und Schwinger, Sabrina und Bonato, Enrica und Hamm, Maximilian und Baqué, Mickael und Helbert, Jörn und Alemanno, Giulia und Amore, Mario (2022) Bridging the gap - linking remote sensing, in-situ and laboratory spectroscopy. Hayabusa2 Symposium 2022, 14-16.11 2022, Tokio.

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Kurzfassung

Sample return provides us with “ground truth” about the visited body, verifying and validating conclusions that can be drawn by remote sensing (both Earth-based and by spacecraft) and via landed instruments on other bodies. The detailed investigation of the mineralogy and geochemistry of Ryugu plays a fundamental role in the understanding of its formation processes, and thereby gather further knowledge about the building blocks of the solar system. Based on the preliminary data from remote sensing measurements and laboratory-based measurements, Ryugu is rich in hydrated carbonaceous chondrite (CC) like material and more specifically it is very similar to Ivuna-like (CI) carbonaceous chondrites [1]. These meteorites are characterized by a high abundance of phyllosilicates and organic matter [2], which makes them have a low albedo. However, Ryugu seems to be even darker than CIs, as well as being more porous and fragile [1]. Back in August 2022, the Institute of Planetary Research at DLR (Berlin) received a fragment retrieved by the Hayabusa2 mission from asteroid Ryugu. The fragment assigned to us for analyses is sample A0112, from chamber A. Our investigation is based on two main goals. The first goal is to address a fundamental challenge in the interpretation of remote sensing data which was seen during the initial analysis of the Hayabusa 2 samples. Observations of planetary surfaces using spectroscopy have shown subdued contrast compared to measurements performed under laboratory conditions on analog materials. A strong focus of the work performed at PSL over the last decade has been to understand - and if possible minimize – the difference between laboratory and remote sensing observations (e.g. [3, 4, 5, 6]). Simulating the conditions on the target body as well as accurately reproducing the observing geometries have gone a long way towards that goal, however differences remain. A suggested explanation is the difference between terrestrial analog materials including even meteorites and the surfaces of planetary bodies. With Ryugu samples this hypothesis can be tested further, leading to a deeper understanding of the link between laboratory and remote sensing observations and thus benefiting not only the analysis of Hayabusa 2 data but of all remote sensing observations of planetary surfaces using spectroscopy. The second goal building on this is an investigation of the mineralogy and organic matter of the samples collected by Hayabusa 2, to better: a) understand the evolution of the materials characterizing asteroid Ryugu and therefore advance our knowledge of the mineralogy of the protoplanetary disk and organic matter (OM); b) investigate the aqueous alteration that took place in the parent body that lead to its current chemical and mineralogical characteristics; c) compare the results with data collected from pristine carbonaceous chondrite meteorites rich in hydrated minerals and organic matter.

elib-URL des Eintrags:https://elib.dlr.de/190934/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Bridging the gap - linking remote sensing, in-situ and laboratory spectroscopy
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Maturilli, AlessandroAlessandro.Maturilli (at) dlr.dehttps://orcid.org/0000-0003-4613-9799NICHT SPEZIFIZIERT
Schwinger, SabrinaSabrina.Schwinger (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Bonato, EnricaEnrica.Bonato (at) dlr.dehttps://orcid.org/0000-0002-1580-3434137603436
Hamm, Maximilianmaximilian.hamm (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Baqué, MickaelMickael.Baque (at) dlr.dehttps://orcid.org/0000-0002-6696-6030NICHT SPEZIFIZIERT
Helbert, JörnJoern.Helbert (at) dlr.dehttps://orcid.org/0000-0001-5346-9505NICHT SPEZIFIZIERT
Alemanno, GiuliaGiulia.Alemanno (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Amore, MarioMario.DAmore (at) dlr.dehttps://orcid.org/0000-0001-9325-6889NICHT SPEZIFIZIERT
Datum:November 2022
Referierte Publikation:Nein
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:remote sensing, organics, mineralogy, origins, spectroscopy, calibration, DATA FUSION
Veranstaltungstitel:Hayabusa2 Symposium 2022
Veranstaltungsort:Tokio
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:14-16.11 2022
Veranstalter :JAXA
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erforschung des Weltraums
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EW - Erforschung des Weltraums
DLR - Teilgebiet (Projekt, Vorhaben):R - Exploration des Sonnensystems
Standort: Berlin-Adlershof
Institute & Einrichtungen:Institut für Planetenforschung > Planetare Labore
Institut für Planetenforschung > Planetenphysik
Hinterlegt von: Maturilli, Dr. Alessandro
Hinterlegt am:28 Nov 2022 15:24
Letzte Änderung:27 Jun 2023 10:23

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