Table 2.
[CI III] emission line ratios
| Object | R1I(5518 Å)I(5538 Å) | R2 I(8434 Å) I(5518 + 5538 Å) | R3 I(8500 Å) I(5518 + 5538 Å) | R4 I(8481 Å) I(5518 + 5538 Å) |
|---|---|---|---|---|
| NGC 2440 | 8.70−1 | — | 7.75−2 | — |
| NGC 6537 | 4.20−1 | 1.47−2 | — | — |
| NGC 6572* | 4.21−1 | 2.81−2 | 3.94−2 | 3.19−2 |
| NGC 6572† | 4.28−1 | 3.70−2 | 5.47−2 | 4.23−2 |
| NGC 6741 | 6.20−1 | 2.30−2 | — | 3.87−2 |
| NGC 6884 | 5.47−1 | 5.83−2 | — | — |
| NGC 7009 | 7.28−1 | 4.11−2 | — | 3.55−2 |
| NGC 7027 | 2.62−1 | 1.07−1 | 1.07−1 | 8.83−2 |
| NGC 7662 | 8.06−1 | — | — | 9.42−2 |
| IC 2165 | 8.92−1 | — | 5.71−2 | 4.29−2 |
| IC 4997* | 3.83−1 | 9.04−2 | 1.02−1 | 1.20−1 |
| IC 4997† | 4.66−1 | 6.77−2 | 1.46−1 | 1.72−1 |
| Hubble 12 | 3.70−1 | 3.24−1 | 3.46−1 | 3.35−1 |
A−B implies A × 10−B.
*Observations taken in 1990.
†Observations taken in 1991.