Open Access
Table 2
Abundances ratios derived from the optical and infrared data of comet 46P in its 2018 apparition.
| UT date | rh | Δ | Abundances (%) | Reference | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| (au) | (au) | CN/OH | HCN/H2O | C2/OH | C2H2/H2O | C2H6/H2O | NH/OH | NH3/H2O | ||
| 2018 Dec. 16 | 1.06 | 0.07 | 0.22 ±0.01 | – | 0.30 ±0.02 | – | 0.72 ± 0.05 | This work | ||
| 2018 Dec. 17 | 1.07 | 0.07 | – | 0.20 ±0.01 | – | 0.07 ±0.01 | 0.75 ±0.08 | – | 0.66 ±0.15 | Bonev et al. (2021) |
| 2018 Dec. 18 | 1.07 | 0.07 | 0.75 ±0.08 | Roth et al. (2021a) | ||||||
| 2018 Dec. 21 | 1.07 | 0.08 | – | 0.21 ± 0.01 | – | 0.08 ±0.01 | 0.71 ±0.09 | – | 0.50 ±0.06 | Khan et al. (2021) |
| 2018 Dec. 23 | 1.07 | 0.09 | 0.22 ±0.01 | – | 0.33 ±0.02 | – | – | 0.74 ±0.08 | – | This work |
| 2019 Jan. 10 | 1.12 | 0.17 | 0.33 ±0.01 | – | 0.43 ± 0.02 | – | – | 0.85 ±0.05 | – | This work |
| 2019 Jan. 11 | 1.13 | 0.18 | 0.68 ±0.06 | McKay et al. (2021) | ||||||
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