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Table 2
Upper limits for column densities of C60.
| LOS | S/Na | uW(γ0) (mÅ) | uN(0)b (1012 cm−2) |
|---|---|---|---|
| BD+31°643 | 1243 | 1.44 ± 0.72 | 14 ± 11 |
| Cyg OB2 3 | 1084 | 3.54 ± 2.71 | 34 ± 34 |
| Cyg OB2 5 | 1192 | 4.09 ± 3.82 | 39c |
| HD 23180 | 1737 | 1.16 ± 0.56 | 11.0 ± 8.7 |
| HD 24432 | 1248 | 1.00 ± 0.69 | 9.5 ± 9 |
| HD 37022 | 1741 | 1.17 ± 0.57 | 11.1 ± 8.8 |
| HD 41690 | 1196 | 1.85 ± 0.91 | 18 ± 14 |
| HD 183143 | 2043 | 4.5 ± 3.2 | 43 ± 41 |
Notes. (a)Values computed over the 6065–6075 Å range following Stoehr et al. (2008). (b)The values and their errors include a correction for large errors (Seiler 1987). (c)The computed error is 45 × 1012 cm−2.
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