Evidence for widespread hydrated minerals on asteroid (101955) Bennu

The OSIRIS-REx Team

Research output: Contribution to journalArticle

7 Citations (Scopus)

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.

Original languageEnglish (US)
Pages (from-to)332-340
Number of pages9
JournalNature Astronomy
Volume3
Issue number4
DOIs
StatePublished - Apr 1 2019
Externally publishedYes

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asteroids
minerals
organic chemistry
carbonaceous chondrites
regolith
infrared absorption
resources
chemistry
slopes

ASJC Scopus subject areas

  • Astronomy and Astrophysics

Cite this

Evidence for widespread hydrated minerals on asteroid (101955) Bennu. / The OSIRIS-REx Team.

In: Nature Astronomy, Vol. 3, No. 4, 01.04.2019, p. 332-340.

Research output: Contribution to journalArticle

The OSIRIS-REx Team. / Evidence for widespread hydrated minerals on asteroid (101955) Bennu. In: Nature Astronomy. 2019 ; Vol. 3, No. 4. pp. 332-340.
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