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The dust coma of periodic comet Churyumov-Gerasimenko (1982 VIII) |
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| Authors: | M.S. Hanner E. Tedesco A.T. Tokunaga G.J. Veeder D.F. Lester F.C. Witteborn J.D. Bregman J. Gradie L. Lebofsky |
| Affiliation: | 1. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA;2. Institute for Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA;3. NASA-Ames Research Center, Moffett Field, California 94035, USA;4. Planetary Geosciences Division, Hawaii Institute of Geophysics, University of Hawaii, Honolulu, Hawaii 96822, USA |
| Abstract: | The dust coma of Comet P/Churyumov-Gerasimenko was monitored in the infrared (1–20 μm) from September 1982 to March 1983. Maximum dust production rate of ～2 × 105 g/sec occured in December, 1 month postperihelion. The ratio of dust/gas production was higher than that in other short-period comets. No silicate feature was visible in the 8- to 13-μm spectrum on 23 October. The mean geometric albedo of the grains was ～0.04 at 1.25 μm and ～0.05 at 2.2 μm. |
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