2019年4月19日
The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy
Science
- 巻
- 364
- 号
- 6437
- 開始ページ
- 272
- 終了ページ
- 275
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1126/science.aav7432
- 出版者・発行元
- American Association for the Advancement of Science ({AAAS})
The near-Earth asteroid 162173 Ryugu, the target of the Hayabusa2 sample-return mission, is thought to be a primitive carbonaceous object. We report reflectance spectra of Ryugu's surface acquired with the Near-Infrared Spectrometer (NIRS3) on Hayabusa2, to provide direct measurements of the surface composition and geological context for the returned samples. A weak, narrow absorption feature centered at 2.72 micrometers was detected across the entire observed surface, indicating that hydroxyl (OH)-bearing minerals are ubiquitous there. The intensity of the OH feature and low albedo are similar to thermally and/or shock-metamorphosed carbonaceous chondrite meteorites. There are few variations in the OH-band position, which is consistent with Ryugu being a compositionally homogeneous rubble-pile object generated from impact fragments of an undifferentiated aqueously altered parent body.
- リンク情報
-
- DOI
- https://doi.org/10.1126/science.aav7432
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/30890589
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85064039118&origin=inward 本文へのリンクあり
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85064039118&origin=inward
- ID情報
-
- DOI : 10.1126/science.aav7432
- ISSN : 0036-8075
- eISSN : 1095-9203
- ORCIDのPut Code : 55479564
- PubMed ID : 30890589
- SCOPUS ID : 85064039118