All Tables

Table 2: Projected mean expansion velocities of the outermost part of the dust and gas cloud. $\Delta t$ gives the time since impact and p the projected distance from the nucleus of the outermost detectable part of the impact cloud. PA lists the position angle at which the measurement was done, with respect to the projected solar direction.
Table 3: Projected mean expansion velocities of the center of the CN gas cloud. $\Delta t$ gives the time since impact and p the projected distance from the nucleus. PA lists the position angle at which the measurement was done, with respect to the projected solar direction.
Table 4: CN gas production rates determined using a Haser model. Columns give the values derived from spatial profiles along the different position angles with respect to the projected solar direction. All values are in [10²⁴ s^-1].
Table 5: Number of CN radicals within the impact cloud and the derived number of parent molecules released by the impact. The values derived from spectra in different directions are given, assuming a spherically symmetric coma, respectively. t-t₀ gives the time since impact. $N_{\rm CN}$ corresponds to the total number CN molecules in the cloud, $N_{\rm p}$ is the number of parent molecules, most likely HCN, derived from Eq. (3). All values are given in [10²⁹ molecules].
Table 1: Observing log including all long-slit spectra. The Table provides the date and time of each observation, the exposure time, exp, and the wavelengths range, $\Delta \lambda$ , covered in each spectrum. The position angle of the slit, PA, is measured from the projected solar direction towards North. Observations marked with $^\ast$ were done using FORS 1, others were performed with FORS 2. $^\dagger$ Night not photometric.