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- W2007280713 abstract "Imaging and polarimetry of Comet C/1999 S4 (LINEAR) during its disruption provide information about the physical properties of the scattering dust particles, and some insight into the structure of the nucleus. A significant decrease in the brightness was noticed, together with a drastic change in the shape of the dust coma. The whole-coma polarization increased, which was typical of a comet with a near 27 percent maximum in polarization, the increase being comparable to previous observations for comets suffering a limited fragmentation. An important gradient in the intensity on the solar side corresponds to the ejected material. The degree of polarization in this region is higher than generally observed in jets and it increases with time as the nucleus (or its fragments) breaks up and ejects relatively large and compact particles. In the surrounding coma, these large particles are fragmented on short time-scales, indicated by the decrease of polarization. These results suggest that the fragile nucleus was not, as far as the physical properties of the dust are concerned, differentiated, and that it was possibly built of primordial cometesimals originating from the same formation region." @default.
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- W2007280713 date "2003-11-01" @default.
- W2007280713 modified "2023-09-25" @default.
- W2007280713 title "Dust coma of Comet C/1999 S4 (LINEAR): imaging polarimetry during nucleus disruption" @default.
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- W2007280713 doi "https://doi.org/10.1016/j.icarus.2003.08.004" @default.
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