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Fig. 20


The G/R intensity ratio of comet 9P/Tempel 1 from JD 2 453 553.955 to 2 453 562.956 UT. The Deep Impact event corresponds to the vertical line (53 559 UT). The average value is shown by the solid red line and the dashed lines correspond to the standard deviation (σ). The mean value around the impact (from 2 453 553.955 UT to 2 453 562.956 UT) is 0.04   ±   0.01. No variation of the ratio was noticed after the impact.

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