Gas and dust jets in the inner coma of comet Halley

Details Gas and dust jets in the inner coma of comet Halley Gas and dust jets in the inner coma of comet Halley

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.332..705c&link_type=abstract

Nature (ISSN 0028-0836), vol. 332, April 21, 1988, p. 705-709. CNR-supported research.

Computer Science

41

Cyanogen, Gas Jets, Halley'S Comet, Interplanetary Dust, Comet Nuclei, Cosmochemistry, Image Filters, Comets, Halley, Comae, Gases, Dust, Jetting, Cyanogen, Flux, Analysis, Emissions, Techniques, Comparisons, Morphology, Dynamics, Comet Nuclei, Surface, Earth-Based Observations, Equipment, Procedure, Imagery, Jets, Cn Radical, C2 Radical, C3 Radical, Image Processing, Structure, Production Rates, Ejection, Models, Ccd Methods

Scientific paper

Cyanogen (CH) jets were discovered in comet Halley by applying an image processing ring masking technique to ground-based observations. The detection of dust, C2, C3, CN and (forbidden OI + NH2) jet features are now reported in comet Halley during the period of the spacecraft Giotto encounter. With absolute flux measurements, careful continuum subtraction and an improved ring-masking technique, an unambiguous separation of the gas and dust components of the cometary coma emissions has been achieved. A comparison of the morphologies of these gas and dust jets provides important information about the anisotropic dynamical processes in the cometary coma and on the surface of comet Halley's nucleus.

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