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

  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},
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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