Recent observations of the OH radio lines in comets

Details Recent observations of the OH radio lines in comets Recent observations of the OH radio lines in comets

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987esasp.278..241c&link_type=abstract

In ESA, Proceedings of the International Symposium on the Diversity and Similarity of Comets p 241-245 (SEE N88-21884 14-91)

Astronomy and Astrophysics

Astronomy

8

Centimeter Waves, Halley'S Comet, Periodic Variations, Radio Astronomy, Gas Dynamics, Hydroxyl Radicals, Kinematics, Line Spectra

Scientific paper

The 18 cm OH lines in comets P/Halley 1982i and C/Wilson 1986l were observed with a radio telescope. Time variations of the signal and an attempt to find out periodic variability are discussed. Variation of the line shapes with heliocentric distance and gas production rate are considered. On several occasions, the line shapes are narrow, which puts constraints on both the parent expansion velocity and the OH ejection velocity at photodissociation.

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