The 2.4 micron spectrum of Comet Halley - A search for H2 emission

Details The 2.4 micron spectrum of Comet Halley - A search for H2 emission The 2.4 micron spectrum of Comet Halley - A search for H2 emission

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989obs...109...19s&link_type=abstract

The Observatory (ISSN 0029-7704), vol. 109, Feb. 1989, p. 19-23.

Physics

2

Emission Spectra, Halley'S Comet, Hydrogen, Infrared Spectra, Molecular Spectra, Spectrum Analysis, Water, Comets, Halley, Spectra, Emissions, Hydrogen, Water, Comae, Source, Calculations, Photodissociation, Production Rate, Formation, Flux, Photoionization, Fluorescence, Vibration, Parameters, Wavelengths

Scientific paper

A 2.4-micron spectrum of Comet Halley was obtained on April 1, 1986 with the UKIRT scanning Fabry-Perot-CVF equipped with an InSb detector. From the ratio of the measured flux from comet Halley to Zeta Her in the 8.8 x 10 to the -4th micron bandwidth, Comet Halley produced a detected flux of about 1.3 x 10 to the 5th photons/sec with a 1-sigma variance of 385 photons. The flux detected in the same spectral region by Maillard et al. (1986) agrees with the measurements reported here to within a factor of two. The data obtained are examined from the standpoint of the possible mechanisms of H2 production.

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