# “Water” abundance at the surface of C-complex main-belt asteroids

@article{Beck2020WaterAA,
title={“Water” abundance at the surface of C-complex main-belt asteroids},
author={Pierre Beck and Jolantha Eschrig and Sandra Potin and Trygve Prestgard and Lydie Bonal and Eric Quirico and Bernard Schmitt},
journal={Icarus},
year={2020},
pages={114125}
}
• P. Beck, +4 authors B. Schmitt
• Published 1 October 2020
• Physics, Environmental Science
• Icarus
Abstract Recently published space-based observations of main-belt asteroids with the AKARI telescope provide a full description of the 3 μm band, related to the presence of OH bearing minerals. Here, we use laboratory spectra of carbonaceous chondrites obtained under controlled atmosphere (CI,CM,CO,CV,CR Tagish Lake) to derive spectral metrics related to the water content in the samples. After testing several spectral metrics, we use a combination of band depth at 2.75 μm and 2.80 μm that shows…
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#### References

SHOWING 1-10 OF 100 REFERENCES
Style and intensity of hydration among C-complex asteroids: A comparison to desiccated carbonaceous chondrites
• Materials Science, Physics
• 2020
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
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 carbonaceous
Hydrogen Concentrations on C-Class Asteroids Derived from Remote Sensing
We present spectroscopic observations of 16 asteroids from 1.9­3.6 μm collected from the United Kingdom Infrared Telescope (UKIRT) from 1996­-2000. Of these 16 asteroids, 11 show some evidence of a 3
Spectroscopic comparison of aqueous altered asteroids with CM2 carbonaceous chondrite meteorites
• Physics
• 1999
In the last year we have started a spectroscopic investigation of asteroids located in the region of the main- belt between about 2.2 and 3.6 AU. The aim of this work is to study the aqueous
Mineralogies and source regions of near-Earth asteroids
• Geology
• 2013
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 have
Water and heat: New constraints on the evolution of the CV chondrite parent body
• Chemistry
• 2020
Abstract This paper focuses on the post-accretion history of CV3 chondrites, through a combination of petrographic and mineralogical characterization, magnetic measurements, spectral (Raman and
Goethite as an alternative origin of the 3.1 μm band on dark asteroids
• Physics
• 2011
Context. The reflectance spectra of some main-belt asteroids contain a 3-μm band, which is explained by the presence of water or hydroxyl groups in minerals. Recent observations of 24-Themis have
Infrared Spectroscopy of Large, Low‐Albedo Asteroids: Are Ceres and Themis Archetypes or Outliers?
• Physics, Geology
Journal of Geophysical Research: Planets
• 2019
Low-albedo, hydrated objects dominate the list of the largest asteroids. These objects have varied spectral shapes in the 3-$\mu$m region, where diagnostic absorptions due to volatile species are
The abundance and stability of “water” in type 1 and 2 carbonaceous chondrites (CI, CM and CR)
Abstract Carbonaceous chondrites record processes of aqueous alteration in the presence of hydrated and hydroxylated minerals, which could have provided a source of water in the inner solar system (
Spectral reflectance analysis of type 3 carbonaceous chondrites and search for their asteroidal parent bodies
• Physics, Materials Science
• 2021
Abstract Non-differentiated asteroids are among the most primitive objects in our Solar System, having escaped intense heating mechanisms. To help us understand the information contained in