Table 3
Molecular column densities of the observed targets.
| Name | Td (K) | Tg (K) | N(H2) (×1022 cm−2) | N (HCNH+)(*) (×1012 cm−2) | N(H13CN)(*) (×1011 cm−2) | N(HN13C)(*) (×1011 cm−2) | N (H13CO+)(*) (×1011 cm−2) | N(N2H+) (×1012 cm−2) |
|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
| The Serpens filament | 12.0–16.3 | … | 0.3−2.2 | 5.1−10.3 | 1.1–6.3 | 0.7–18.2 | 0.6–7.0 | 0.4−10.8 |
| bolo4 | 12.4 | … | 1.7 | 9.7 ± 2.1 | 6.1 ± 1.1 | 17.9 ± 0.3 | 5.8 ± 0.2 | 10.0 ± 0.7 |
| bolo12 | 12.5 | … | 1.8 | 10.1 ± 1.8 | 4.7 ± 0.5 | 12.9 ± 0.1 | 6.7 ± 0.2 | 8.3 ± 0.5 |
| Serpens South | 11.1–16.5 | 10.3–17.5 | 1.8–16.7 | 4.2−27.1 | 2.5−46.8 | 1.9−45.0 | 1.1−41.2 | 0.8−57.1 |
| KAM280 | 11.4 | 10.9 | 9.6 | 24.8 ± 2.3 | 6.3 ± 0.3 | 18.7 ± 0.3 | 7.5 ± 0.2 | 35.1 ± 2.0 |
| KAM281 | 11.6 | 10.7 | 8.6 | 17.1 ± 2.4 | 6.7 ± 0.4 | 18.0 ± 0.3 | 6.8 ± 0.1 | 24.7 ± 1.5 |
| KAM283 | 12.4 | 12.6 | 6.6 | 10.8±1.8 | 12.9 ± 0.4 | 23.2 ± 0.5 | 14.6 ± 0.3 | 17.7 ± 1.4 |
| KAM294 | 13.4 | 12.9 | 7.3 | 12.6 ± 1.3 | 20.1 ± 0.4 | 26.8 ± 0.5 | 16.2 ± 0.2 | 23.9 ± 1.4 |
| KAM299 | 16.0 | 16.4 | 16.4 | 6.2 ± 0.5 | 42.2 ± 0.3 | 37.3 ± 0.9 | 37.3 ± 0.9 | 50.6 ± 2.2 |
Notes. (1) Source name. (2) Dust temperature. (3) Gas kinetic temperature. “…” indicates that no information is available. (4) H2 column density. (5) HCNH+ column density. For KAM283, KAM294, and KAM299 where HCNH+ (2−1) emission is not detected, we use HCNH+ (3−2) to estimate the column densities at a resolution of 27″. (6) H13CN column density. (7) HN13C column density. (8) H13CO+ column density. (9) N2H+ column density. “*” indicates that these column densities are derived under the optically thin assumption. A constant excitation temperature of 12 K is assumed for HCNH+, while a constant excitation temperature of 5 K is assumed for H13CN, HN13C, and H13CO+.
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