Style and intensity of hydration among C-complex asteroids: A comparison to desiccated carbonaceous chondrites

  title={Style and intensity of hydration among C-complex asteroids: A comparison to desiccated carbonaceous chondrites},
  author={Sandra Potin and Pierre Beck and F. Usui and Lydie Bonal and Pierre Vernazza and Bernard Schmitt},
Abstract Here we report a comparison between reflectance spectroscopy of meteorites under asteroidal environment (high vacuum and temperature) and Main Belt and Near Earth Asteroids spectra. Focusing on the –OH absorption feature around 3 μm, we show that the asteroidal environment induces a reduction of depth and width of the band, as well as a shift of the reflectance minimum. We then decompose the –OH feature into several components with a new model using Exponentially Modified Gaussians… Expand
“Water” abundance at the surface of C-complex main-belt asteroids
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Hydrous mineralogy of CM and CI chondrites from infrared spectroscopy and their relationship with low albedo asteroids
Abstract IR spectroscopy is one of the few techniques that can directly probe water molecules in rocks. This method has been used to characterize the mineralogy of hydrated/hydrous carbonaceousExpand
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We present an experimental study on ion irradiation of carbonaceous chondrites, simulating solar wind irradiation on primitive asteroids, to better constrain the space weathering processes of lowExpand
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Knowledge of the hydrated mineral inventory on the asteroids is important for deducing the origin of Earth's water, interpreting the meteorite record, and unraveling the processes occurring duringExpand
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Evidence for abundant hydrated minerals on the surface of near-Earth asteroid Bennu is revealed 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. Expand
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Abstract Near-Earth Asteroids (NEAs) offer insight into a size range of objects that are not easily observed in the main asteroid belt. Previous studies on the diversity of the NEA population haveExpand
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Little is known about carbonaceous asteroids weathering in space as previous studies have struggled to define a general spectral trend among dark surfaces. Here we present experiments on ionExpand
The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes
Spectral observations and a principal components analysis suggest that Ryugu originates from the Eulalia or Polana asteroid family in the inner main belt, possibly via more than one generation of parent bodies. Expand