Open Access
Table 4
Production rates.
| UT date | Molecule | rh | Production rate | Lines(a) |
|---|---|---|---|---|
| (yyyy/mm/dd) | (au) | (1025 molec. s−1) | ||
| 21P/Giacobini-Zinner | ||||
| 1998/10/30–35 | HCN | 1.071 | 3.5 ± 0.5 | 2 |
| CH3OH | 71 ± 10 | 5 | ||
| CS | 3.3 ± 0.5 | 1 | ||
| H2CO(b) | 5.5 ± 2.1 | 1 | ||
| HNC | <0.45 | (1) | ||
| CO | <100 | (1) | ||
| 1998/11/10–16 | HCN | 1.044 | 2.5 ± 0.2 | 2 |
| CH3OH | 41 ± 10 | 5 | ||
| H2CO(b) | <11.5 | (1) | ||
| H2S | <10.8 | (1) | ||
| 2018/09/14–18 | HCN | 1.017 | 3.4 ± 0.1 | 2 |
| CH3OH | 53.9 ± 3.3 | 15 | ||
| CH3CN | 0.78 ± 0.10 | 4 | ||
| H2CO(b) | 5.5 ± 2.2 | (4) | ||
| H2S | 2.8 ± 1.0 | 1 | ||
| CS | 2.3 ± 0.2 | 1 | ||
| CO | <489 | (1) | ||
| HNC | <0.34 | (1) | ||
| HC3N | <0.49 | (6) | ||
| OCS | <17.8 | (2) | ||
| SO(c) | <13.7 | (1) | ||
| HNCO | <2.6 | (2) | ||
| HCOOH | <18.8 | (3) | ||
| NH2CHO | <1.3 | (8) | ||
| CH3CHO | <11.9 | (6) | ||
| 41P/Tuttle-Giacobini-Kresák | ||||
| 2017/04/26.0 | HCN | 1.061 | 0.38 ± 0.03 | 1 |
| CH3OH | 15.3 ± 1.7 | (22) | ||
| CO | <85 | (1) | ||
| 2017/05/01.0 | HCN | 1.074 | 0.29 ± 0.06 | 1 |
| CH3 OH | 6.6 ± 3.5 | (22) | ||
| CH3 CN | <0.35 | (8) | ||
| HC3 N | <0.39 | (2) | ||
| H2 S | <2.2 | (1) | ||
| 2017/04/26–31 | HCN | 1.065 | 0.36 ± 0.03 | 1 |
| CH3 OH | 14.0 ± 1.5 | (30) | ||
| HNCO | <1.0 | (2) | ||
| H2 CO(b) | <5.2 | (2) | ||
| HNC | <0.074 | (1) | ||
| CS | <0.48 | (2) | ||
| OCS | <8.9 | (4) | ||
| SO(c) | <8.2 | (1) | ||
| SO2 | <2.5 | (14) | ||
| 64P/Swift-Gehrels | ||||
| 2018/12/11.75 | HCN | 1.465 | 1.20 ± 0.12 | 1 |
| CH3 OH | 38 ± 6 | 11 | ||
| 2018/12/17.95 | CH3 OH | 1.490 | 28 ± 2 | 10 |
| CS | 0.9 ± 0.3 | 1 | ||
| SO | <3.8 | (2) | ||
| SO(c) | <11.2 | (2) | ||
| HNCO | <1.1 | (1) | ||
| 38P/Stephan-Oterma | ||||
| 2018/12/12–18 | CH3 OH | 1.65 | 25 ± 7 | (13) |
| 2018/12/13.12 | H2 S | 1.639 | <13.9 | (1) |
| 2018/12/13–18 | CS | 1.64 | <1.8 | (2) |
| 2018/12/12–13 | H2 CO(d) | 1.637 | <2.9 | (3) |
| 2018/12/12.12 | CO | 1.636 | <378 | (1) |
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