Metallic atoms and ions in comets: Comet Halley 1986 3

Details Metallic atoms and ions in comets: Comet Halley 1986 3 Metallic atoms and ions in comets: Comet Halley 1986 3

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acm..proc..241i&link_type=abstract

In Lunar and Planetary Inst., Asteroids, Comets, Meteors 1991 p 241-244 (SEE N93-19113 06-90)

Physics

2

Brightness, Cometary Atmospheres, Halley'S Comet, Metal Ions, Refractory Materials, Spectra, Zodiacal Dust, Cryogenics, Gas Flow, Space Observations (From Earth), Spatial Resolution

Scientific paper

The origin of metallic atoms and ions in the cometary comae is investigated theoretically. Two effects are revealed in the comas of bright comets: (1) the Na anomalous type effect is possible within the gas-dust jets of comet P/Halley 1986 3 due to cooling cometary dust by cryogenic gas flow from the nucleus; and (2) the production of ions of refractory elements (Fe(+), Si(+), etc.) at large heliocentric distances is possible in the comas of the Halley type dusty comets due to high-velocity impacts between cometary and zodiacal dust particles. Spectral observations of comets with high sensitivity and spatial resolution are important for studying both comets and interplanetary dust.

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