Computer Science
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250c..87m&link_type=abstract
In ESA, Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 3: Posters p 87-91 (SEE N87-26714 2
Computer Science
Cometary Atmospheres, Halley'S Comet, Ion Distribution, Spatial Distribution, Brightness, Emission Spectra, Planetary Ionospheres, Space Observations (From Earth), Water
Scientific paper
The authors present spatial profiles of H2O+ emission in the inner coma of comet P/Halley on eight dates during the 1985 - 1986 apparition. The profiles are derived from two-dimensional CCD spectrograms taken with the spectrograph slit oriented along the cometary radius vector. The authors calibrate the surface brightness profile of the λ6198 H2O+ emission line in terms of the column density of H2O+ ions. The profile from 14.4 March 1986 is compared with the Giotto Ion Composition Experiment measurement of the shape of the H2O+ space density profile. A primary result is that the ionosphere becomes larger and steeper in the sunward direction with an increasing water production rate.
McCarthy Patrick. J.
Spinrad Hyron
Strauss Michael A.
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