Detection of a new emission band at 2.8 microns in Comet P/Halley

Details Detection of a new emission band at 2.8 microns in Comet P/Halley Detection of a new emission band at 2.8 microns in Comet P/Halley

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...187..519t&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 187, no. 1-2, Nov. 1987, p. 519-522.

Astronomy and Astrophysics

Astrophysics

30

Astronomical Spectroscopy, Emission Spectra, Halley'S Comet, Infrared Spectra, Black Body Radiation, Carbon, Water

Scientific paper

A 2.8- to 3.7 μm spectrum of comet Halley taken in May 1986 is presented. The spectrum shows (1) the 3.36 μm emission feature that most likely arises from carbonaceous material, (2) a previously unknown emission band at 2.8 - 2.9 μm, and (3) no evidence for the 3 μm water-ice band either in reflection or absorption. The 2.8- to 2.9 μm emission feature does not arise from infrared fluorescence from water or OH. Since LTE emission from water is unlikely, the nature of this feature is uncertain.

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