Ionic emission from and activity evolution in comet C/2020 F3 (NEOWISE): Insights from long-slit spectroscopy and photometry

Open Access

Fig. 16

Tailward spectrum of 20F3 overlaid with the spectra of comets Bradfield 1987 (Lutz et al. 1993) and Ikeya-Zhang (Cochran 2002), illustrating the detection of ${CO}_{2}^{+}$ ${\rm{CO}}_{\rm{2}}^{\rm{ + }}$ emission at 4130 Å.

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