BFI at LPSC 2017

BFI at LPSC 2017.jpg

Dr. Jean-Philippe Combe, Katherine Johnson, and Dr. Sandeep Singh at LPSC 2017

BFI participated in LPSC 2017 with several presentations and posters.

Monday, March 20, 2017 [M154] PLANETARY CRYOSPHERES AND POLAR PROCESSES I: NOT MARS

McCord T. B. * Castillo-Rogez J. C. Russell C. T. Raymond C. A.

Title: Ceres Evolution: The Picture Before and After Dawn [#1098]

Summary: Ceres is shown by Dawn to be a highly physically and chemically evolved water-rich body probably active today, consistent with pre-Dawn findings.

Combe J.-Ph. * Raponi A. Tosi F. De Sanctis M.-C. Ammannito E. et al.

Title: Exposed H2O-Rich Areas on Ceres Detected by Dawn [#2568]

Summary: - H2O-rich materials exposed at the surface of Ceres have been detected by the Visible and InfraRed mapping spectrometer (VIR) of the Dawn mission.

  • Spectral modeling indicates that H2O ice is the most likely component, as opposed to hydrated minerals.
  • To date, nine H2O-rich areas have been identified, at latitudes higher than 30 .
  • The distribution is comparable with the latitudinal trend observed in the Hydrogen abdundance of the subsurface measured by the Gramma-Ray and Neutron Detector (GRaND).
  • These findings are consistent with H2O-ice in the subsurface that may be locally exposed by mechanical processes such as impact crater or landslides.

Tuesday, March 21, 2017 [T205] COMET 67P/CHURYUMOV-GERASIMENKO AND OTHER COMETS

 Johnson K. E. * Singh S. McCord T.

Title: Study of the 2.7 Micron Absorption Band Found on Comet 67P/CG [#2954]

Summary: - The Visible Infrared and Thermal imaging Spectrometer (VIRTIS) has revealed diversity in the shape of the 2.7 microns detected at the surface of comet nucleus 67P/CG, .

  • One has a double peak characteristic of CO2 (previoulsy identified), and one has a single peak that is probably due to OH (new identification in our study).
  • Hydroxylated phyllosilicates are candidate materials, similar to the composition of the surface of Ceres.

 

 

 

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