On the average chemical composition of cometary dust

Details On the average chemical composition of cometary dust On the average chemical composition of cometary dust

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.249...27j&link_type=abstract

In ESA Proceedings of an ESA Workshop on the Comet Nucleus Sample Return Mission p 27-30 (SEE N87-25109 18-90)

Computer Science

19

Chemical Composition, Cosmic Dust, Giotto Mission, Halley'S Comet, Mass Spectroscopy, Vega Project, Abundance, Carbonaceous Chondrites, Silicates

Scientific paper

Analyses of mass spectra obtained by the particulate impact analyzers onboard the Vega and Giotto spacecraft are described. Analyzing a subset of 23 selected spectra obtained with identical instrument conditions produces a preliminary average abundance pattern of major and minor elements in Halley's dust. Within a factor of two the pattern is chondritic for the major elements. Carbon is enriched by a factor of 8 compared to C1 chondrites. Halley's dust is composed of chondritic silicates and refractory carbonaceous material.

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