Table 1
Line parameters of DCN (2–1) and H13CN (2–1) derived in the five regions depicted in Fig. 1 and from the spectra integrated over the whole emission of DCNa.
| ∫Tmbd v | v LSR | N | Dfrac b | |
| (× 1011 cm-2) | (× 10-2) | |||
| (K km s-1) | ( km s-1) | 10–70 K | 10–70 K | |
|
|
||||
| E-wall (B0e) | ||||
| DCN (2–1) | 0.71(0.11) | 0.15 | 2.7(0.4)−7.2(1.1) | 0.47(0.12)−0.54(0.14) |
| H13CN (2–1) | 2.33(0.41) | − 1.86 | 7.5(1.3)−17.1(2.8) | |
|
|
||||
| B1a | ||||
| DCN (2–1) | 0.79(0.12) | 1.16 | 3.0(0.5)−8.0(1.2) | 0.32(0.07)−0.37(0.08) |
| H13CN (2–1) | 3.84(0.65) | − 0.95 | 12.4(2.1)−28.2(4.8) | |
|
|
||||
| B1e | ||||
| DCN (2–1) | 0.24(0.05) | 1.15 | 0.9(0.3)−2.4(0.4) | 0.08(0.03)−0.09(0.03) |
| H13CN (2–1) | 4.83(0.75) | − 0.89 | 15.6(2.5)−35.5(5.7) | |
|
|
||||
| B1c | ||||
| DCN (2–1) | 0.57(0.09) | 1.13 | 2.2(0.3)−5.8(0.9) | 0.26(0.06)−0.30(0.07) |
| H13CN (2–1) | 3.42(0.56) | 1.06 | 11.1(1.8)−25.1(3.9) | |
|
|
||||
| B1b | ||||
| DCN (2–1) | 0.27(0.05) | 1.13 | 1.5(0.2)−4.1(0.5) | 0.48(0.12)−0.56(0.15) |
| H13CN (2–1) | 1.29(0.28) | −0.88 | 4.2(1.1)−9.5(2.4) | |
|
|
||||
| Total | ||||
| DCN (2–1) | 0.44(0.07) | 1.15 | 1.7(0.3)−4.5(0.7) | 0.32(0.07)−0.37(0.09) |
| H13CN (2–1) | 2.11(0.37) | 1.04 | 6.8(1.2)−15.5(2.8) | |
Notes.
Uncertainties are reported in parentheses and include the statistical error and the uncertainty in the flux calibration.
Dfrac(HCN) = N(DCN)/N(HCN) computed using 12C/13C = 77 (Wilson & Rood 1994) to obtain N(HCN) from N(H13CN).
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