This chapter reviews the estimates of the dust-to-gas and refractory-to-ice mass ratios derived from Rosetta measurements in the lost materials and the nucleus of 67P/Churyumov-Gerasimenko, respectively. First, the measurements by Rosetta instruments are described, as well as relevant characteristics of 67P. The complex picture of the activity of 67P, with its extreme North-South seasonal asymmetry, is presented. Individual estimates of the dust-to-gas and refractory-to-ice mass ratios are then presented and compared, showing wide ranges of plausible values. Rosetta's wealth of information suggests that estimates of the dust-to-gas mass ratio made in cometary comae at a single point in time may not be fully representative of the refractory-to-ice mass ratio within the cometary nuclei being observed.


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    Title :

    Dust-to-Gas and Refractory-to-Ice Mass Ratios of Comet 67P/Churyumov-Gerasimenko from Rosetta Observations


    Contributors:
    Choukroun, M. (author) / Altwegg, K. (author) / Kührt, E. (author) / Biver, N (author) / Bockelee-Morvan, D. (author) / Drazkowska, J. (author) / Herique, A. (author) / Hilchenbach, M. (author) / Marschall, R. (author) / Pätzold, M (author)

    Published in:

    Publication date :

    2020-04-01



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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