SPECTROSCOPY OF COMET HALE–BOPP IN THE VISIBLE/NEAR INFRARED: MODELING OF DUST PROPERTIES


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Abstract

Previous analysis of imaging spectroscopy data in the 0.4–1 μm spectral range of comet Hale–Bopp, have shown the presence of two regions on the sunward and antisunward sides of the nucleus exhibiting different continuum emission (Bellucci, 1998, hereafter paper I)). In this work we present the modeling of the continuum emission in terms of size distribution and composition of the dust grains. The spectra are fitted by micron sized olvine grains. A mechanism to explain the spatial gradient is also proposed.

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