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Fig. 6

image

Evolution of the dust normalized reflectivity gradient of comet C/2012 F6 (Lemmon) computed from A(θ) values as a function of the heliocentric distance. The origin of the x-axis is the perihelion. Pre-perihelion values are represented with full symbols and post-perihelion values with empty symbols. The dust color is computed from RC and UC filters (top), RC and BC filters (middle), and RC and GC filters (bottom).

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