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The comet nucleus: ice and dust morphological balances in a production surface of comet P/Halley.

Green, S. F.; McDonnell, J. A. M.; Pankiewicz, G. S. +2 more

Dust-to-gas mass ratios are presented based on in situ measurements of the coma dust and gas distributions of comet P/Halley by the DIDSY, PIA, and NMS experiments aboard the Giotto spacecraft. A relative excess, compared with preflight expectations, of particulates with masses >10^-9kg is observed; if this is representative of the co…