Composition of comet Halley dust particles from Vega observations

Composition of comet Halley dust particles from Vega observations

The first direct measurements of the physical and chemical properties of cometary dust, obtained by the dust impact mass analyzer aboard Vega 1 and 2 studying comet Halley, are discussed. Particles of mass less than 10 to the -14th g are much more abundant than was predicted by models. Most of the p...

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Veröffentlicht in:Nature (London) 1986-05, Vol.321 (6067s), p.280-282
Hauptverfasser: Kissel, J, Sagdeev, R. Z, Bertaux, J. L, Angarov, V. N, Audouze, J, Blamont, J. E, Büchler, K, Evlanov, E. N, Fechtig, H, Fomenkova, M. N, von Hoerner, H, Inogamov, N. A, Khromov, V. N, Knabe, W, Krueger, F. R, Langevin, Y, Leonas, V. B, Levasseur-Regourd, A. C, Managadze, G. G, Podkolzin, S. N, Shapiro, V. D, Tabaldyev, S. R, Zubkov, B. V
Format: Artikel
Sprache:eng
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Sciences of the Universe
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Zusammenfassung:The first direct measurements of the physical and chemical properties of cometary dust, obtained by the dust impact mass analyzer aboard Vega 1 and 2 studying comet Halley, are discussed. Particles of mass less than 10 to the -14th g are much more abundant than was predicted by models. Most of the particles are rich in light elements such as H, C, N, and O, lending support to models that describe cometary material as consisting of radiation-processed ices. Three examples of mass spectra for typical particle compositions are shown. (C.D.)
ISSN:0028-0836
1476-4687
DOI:10.1038/321280a0