Optical observations of the neutral and ion coma of Comet Halley

Details Optical observations of the neutral and ion coma of Comet Halley Optical observations of the neutral and ion coma of Comet Halley

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250a.493r&link_type=abstract

In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 1: Plasma and Gas p 493-498 (SEE N87

Computer Science

5

Comet Tails, Halley'S Comet, Ions, Neutral Gases, Optical Emission Spectroscopy, Cosmic Dust, Cyano Compounds, Sputtering

Scientific paper

Narrow-band spectral images of a number of the constituents of the neutral coma (CN, C2, CH, O, H, Na), and of the ion coma and tail formation of comet P/Halley were obtained during four observing periods between late Nov 1985 and mid-June 1986. The CN coma was detectable to a distance of more than 4 Mkm in Dec 1985, and 5 - 6 Mkm in early March 1986. The inner (assumed parent) and outer (assumed daughter) Haser scale lengths of the CN2 coma were found to each have a dependence on (R)2. A narrow, tail-like, feature in CN emission, occasionally extending 10 Mkm anti-sunward, may be due to sputtering of dust grains sometimes present within the ion tail core.

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