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Evidence for widespread hydrated minerals on asteroid (101955) Bennu

Hamilton, V. E.; Simon, A. A.; Christensen, P. R.; Reuter, D. C.; Clark, B. E.; Barucci, M. A.; Bowles, N. E.; Boynton, W. V.; Brucato, J. R.; Cloutis, E. A.; Connolly, H. C.; Donaldson Hanna, K. L.; Emery, J. P.; Enos, H. L.; Fornasier, S.; Haberle, C. W.; Hanna, R. D.; Howell, E. S.; Kaplan, H. H.; Keller, L. P.; Lantz, C.; Li, J.-Y.; Lim, L. F.; McCoy, T. J.; Merlin, F.; Nolan, M. C.; Praet, A.; Rozitis, Benjamin; Sandford, S. A.; Schrader, D. L.; Thomas, C. A.; Zou, X.-D. and Lauretta, D. S. (2019). Evidence for widespread hydrated minerals on asteroid (101955) Bennu. Nature Astronomy, 3 pp. 332–340.

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DOI (Digital Object Identifier) Link: https://doi.org/10.1038/s41550-019-0722-2
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Abstract

Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated minerals on the surface of near-Earth asteroid (101955) Bennu in the form of a near-infrared absorption near 2.7 µm and thermal infrared spectral features that are most similar to those of aqueously altered CM-type carbonaceous chondrites. We observe these spectral features across the surface of Bennu, and there is no evidence of substantial rotational variability at the spatial scales of tens to hundreds of metres observed to date. In the visible and near-infrared (0.4 to 2.4 µm) Bennu’s spectrum appears featureless and with a blue (negative) slope, confirming previous ground-based observations. Bennu may represent a class of objects that could have brought volatiles and organic chemistry to Earth.

Item Type: Journal Item
Copyright Holders: 2019 Springer, Nature
ISSN: 2397-3366
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 60674
Depositing User: ORO Import
Date Deposited: 26 Apr 2019 10:37
Last Modified: 17 May 2019 03:08
URI: http://oro.open.ac.uk/id/eprint/60674
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