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

  title={Dust-to-Gas and Refractory-to-Ice Mass Ratios of Comet 67P/Churyumov-Gerasimenko from Rosetta Observations},
  author={Mathieu Choukroun and Kathrin Altwegg and E. K{\"u}hrt and Nicolas Biver and Dominique Bockel{\'e}e-Morvan and Joanna Dra̧żkowska and Alain H{\'e}rique and Martin Hilchenbach and Raphael Marschall and Martin P{\"a}tzold and Matthew Taylor and Nicolas Thomas},
  journal={Space Science Reviews},
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… 

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