Summary
A 2.8- to 3.7-gm spectrum of comet Halley taken in May 1986 is presented. The spectrum shows (1) the 3.36-gm emission feature that most likely arises from carbonaceous material, (2) a previously unknown emission band at 2.8-2.9 gm, and (3) no evidence for the 3-gm water-ice band either in reflection or absorption. The 2.8- to 2.9-gm 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.
Staff Astronomer, NASA Infrared Telescope Facility
Visiting Astronomer, Infrared Telescope Facility, which is operated by the University of Hawaii, under contract with the National Aeronautics and Space Administration
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© 1988 Springer-Verlag Berlin Heidelberg
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Tokunaga, A.T., Nagata, T., Smith, R.G. (1988). Detection of a new emission band at 2.8 µm in comet P/Halley. In: Grewing, M., Praderie, F., Reinhard, R. (eds) Exploration of Halley’s Comet. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82971-0_93
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DOI: https://doi.org/10.1007/978-3-642-82971-0_93
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