Thermal Infrared Spectra of Comet Hale-Bopp at Heliocentric Distances of 4 and 2.9 AU
作者： John K. Davies , Thomas R. Geballe , Martha S Hanner , H. A. Weaver , Jacques Crovisier
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摘要: We present 10 and 20 μm spectra of comet Hale-Bopp taken at UKIRT on 1996 June September 29.The clearly show a strong silicate feature with peaks 10.0 11.2 μm. The spectrum 29 has excess flux relative to blackbody peak near 19μm, in good agreement the ISO SWS obtained week later. However, significantly lower than would be expected based extrapolation from 12.5
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