The possible role of organic polymers in the structure and fragmentation of dust in the coma of Comet P/Halley

Details The possible role of organic polymers in the structure and fragmentation of dust in the coma of Comet P/Halley The possible role of organic polymers in the structure and fragmentation of dust in the coma of Comet P/Halley

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...231..543b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 231, no. 2, May 1990, p. 543-547.

Astronomy and Astrophysics

Astrophysics

17

Cometary Atmospheres, Halley'S Comet, High Polymers, Interplanetary Dust, Carbon Monoxide, Cyanogen, Formaldehyde, Giotto Mission, Polymer Chemistry, Vega Project, Comets, Halley, Organic Material, Dust, Structure, Fragmentation, Comae, Gases, Grains, Sublimation, Agglutinates, Polymerization, Composition, Polymers, Formaldehyde, Carbon Monoxide, Mantle, Spacecraft Observations, Giotto Mission, Pia Instrument, Puma Instrument, Heating

Scientific paper

Within the frame of the model of agglomerated grains for cometary dust the possible role of organic polymers as gluing material between the individual building blocks of submicron size is outlined. In this context the characteristics of the dust fragmentation, observed in situ at Comet P/Halley and the importance of proposed dust fragmentation mechanisms are discussed. By combining the appearance of dust fragmentation with gas phase observationss in the coma of Halley's comet (CO release, CN jets, possible in situ identification of organic material like H2CO and polymerized H2CO) it is concluded that both phenomena may arise from the sublimation of a gluing material such as polyoxymethylene, in the grain agglomerates of the dust.

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