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Classification of comet 67P dust at the nanometre scale with MIDAS on-board Rosetta

Abstract : The properties of the smallest sub-units of cometary dust contain information on their origin and clues to the formation of planetesimals and planets. The MIDAS Atomic Force Microscope (AFM) on-board the ESA Rosetta orbiter collected dust in the coma of comet 67P/Churyumov-Gerasimenko. These particles, collected at low velocities, were analysed to measure the structural properties of minimally altered material with a known origin. This can be used to further the investigation of our early Solar System. A novel method is presented to achieve the highest spatial resolution of imaging possible with the MIDAS instrument. 3D topographic images with resolutions of down to 8 nm are analysed to determine the sub-unit sizes of particles on the nanometre scale.
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Submitted on : Monday, July 29, 2019 - 1:44:54 PM
Last modification on : Friday, October 7, 2022 - 4:00:53 AM


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  • HAL Id : insu-02196324, version 1


Thurid Mannel, Mark Bentley, Peter D. Boakes, Harald Jeszenszky, Pascale Ehrenfreund, et al.. Classification of comet 67P dust at the nanometre scale with MIDAS on-board Rosetta. EPSC-DPS Joint Meeting 2019, Sep 2019, Geneva, Switzerland. pp.EPSC-DPS2019-1374-1. ⟨insu-02196324⟩



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