The nature of the 2.8-micron emission feature in cometary spectra

Details The nature of the 2.8-micron emission feature in cometary spectra The nature of the 2.8-micron emission feature in cometary spectra

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...216..278b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 216, no. 1-2, June 1989, p. 278-283.

Astronomy and Astrophysics

Astronomy

32

Cometary Atmospheres, Infrared Astronomy, Infrared Sources (Astronomy), Halley'S Comet, Hydrolysis, Hydroxyl Radicals, Rotational Spectra, Vibrational Spectra, Water, Comets, Spectra, Emissions, Astronomy, Spectroscopy, Infrared, Intensity, Wavelengths, Water, Oh Radical, Halley, Wilson, Aircraft Observations, Production Rates, Comparisons, Fluorescence, Photolysis, Kao Aircraft, Satellite Observations, Iue Satellite

Scientific paper

It is suggested that the the emission at 2.8 microns previously observed in the P/Halley 1986 III and Wilson 1987 VII comets is mainly due to the long-wavelength parts of the nu and (101-100) water bands. Much weaker contributions come from other water bands and from vibrationaly excited OH produced by H2O photolysis. Synthetic profiles of these emissions are presented and compared to the observations. The water production rates of the comets are derived.

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