Home > Publications database > Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples
 
Journal Article PUBDB-2022-06897
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Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples

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2023
Assoc. Washington, DC

Science / Science now 379(6634), 787 () [10.1126/science.abn8671]
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Abstract: Samples of the carbonaceous asteroid Ryugu were brought to Earth by the Hayabusa2 spacecraft. We analyzed seventeen Ryugu samples measuring 1-8 mm. CO$_2$-bearing water inclusions are present within a pyrrhotite crystal, indicating that Ryugu’s parent asteroid formed in the outer Solar System. The samples contain low abundances of materials that formed at high temperatures, such as chondrules and Ca, Al-rich inclusions. The samples are rich in phyllosilicates and carbonates, which formed by aqueous alteration reactions at low temperature, high pH, and water/rock ratios < 1 (by mass). Less altered fragments contain olivine, pyroxene, amorphous silicates, calcite, and phosphide. Numerical simulations, based on the mineralogical and physical properties of the samples, indicate Ryugu’s parent body formed ~ 2 million years after the beginning of Solar System formation.

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Contributing Institute(s):
  1. DOOR-User (DOOR ; HAS-User)
  2. PETRA-S (FS-PETRA-S)
Research Program(s):
  1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
  2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
  3. FS-Proposal: II-20210018 EC (II-20210018-EC) (II-20210018-EC)
Experiment(s):
  1. PETRA Beamline P06 (PETRA III)

Appears in the scientific report 2022
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Medline ; BIOSIS Previews ; Biological Abstracts ; Chemical Reactions ; Clarivate Analytics Master Journal List ; Current Contents - Agriculture, Biology and Environmental Sciences ; Current Contents - Life Sciences ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 50 ; Index Chemicus ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection ; Zoological Record
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Private Collections > >DESY > >FS > FS-PETRA-S
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 Record created 2022-11-21, last modified 2025-07-24
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