Table 1
Properties of the selected observed lines.
| Species | Transition | Frequency(a) (MHz) | Beff | Tmb,peak (K) | rms (mK) | VLSR(b) (km s−1) | Δυ(b) (km s–1) | ∫Tmbdυ (K km s–1) |
|---|---|---|---|---|---|---|---|---|
| L1544 | ||||||||
| CCH | N=1–0, J=1/2–1/2, F=1–0 | 87446.47(1) | 0.52 | 0.96(3) | 27 | 7.24 | 0.39 | 0.40(2) |
| 13CCH | N=1–0, J=3/2–1/2, F1=2–1, F=5/2–3/2 | 84119.33(2) | 0.53 | 0.039(5) | 7 | 7.31 | 0.32 | 0.013(2) |
| C13CH | N=1–0, J=3/2–1/2, F1=2–1, F=5/2–3/2 | 85229.335(4) | 0.53 | 0.089(6) | 9 | 7.35 | 0.32 | 0.030(3) |
| CCD | N=1–0, J=1–0, F1 =3/2–1/2, F=3/2–3/2 | 72101.811(5) | 0.54 | 0.19(1) | 24 | 7.23 | 0.39 | 0.078(9) |
| H13CN | J=1–0, F=0–1 | 86342.2543(3) | 0.53 | 0.22(1) | 18 | 7.21 | 0.39 | 0.091(7) |
| DCN | J=1–0, F=0–1 | 72417.03(1) | 0.54 | 0.69(2) | 23 | 7.14 | 0.37 | 0.27(1) |
| H13CO+ | J=1–0 | 86754.288(5) | 0.53 | 1.38(4) | 20 | 7.13 | 0.52 | 0.77(4) |
| HC18O+ | J=1–0 | 85162.223(5) | 0.53 | 0.229(6) | 9 | 7.18 | 0.38 | 0.093(4) |
| DCO+ | J=1–0 | 72039.3124(8) | 0.54 | 2.44(5) | 25 | 7.12 | 0.60 | 1.55(4) |
| HN13C | J=1–0, F1=0–1, F2=1–2, F=1–2 | 87090.675(3) | 0.52 | 0.27(3) | 25 | 7.92 | 0.24 | 0.07(2) |
| DNC | J,I,F=1,2,1–0,2,2; 1,2,1–0,0,0 | 76305.513(1) | 0.54 | 0.99(2) | 26 | 7.90 | 0.40 | 0.42(2) |
| HH211 | ||||||||
| CCH | N=1–0, J=3/2–1/2, F=1–1 | 87284.11(1) | 0.52 | 0.50(1) | 27 | 9.02 | 0.54 | 0.29(1) |
| 13CCH | N=1–0, J=3/2–1/2, F1=1–0, F=3/2–1/2 | 84153.31(2) | 0.53 | 0.016(4) | 6 | 9.07 | 0.4 | 0.007(2) |
| C13CH | N=1–0, J=3/2–1/2, F1=2–1, F=5/2–3/2 | 85229.335(4) | 0.53 | 0.032(4) | 8 | 9.10 | 0.53 | 0.018(4) |
| CCD | N=1–0, J=1–0, F1 =3/2–1/2, F=5/2–3/2 | 72107.721(3) | 0.54 | 0.37(5) | 28 | 9.10 | 0.45 | 0.18(3) |
| H13CN | J=1–0, F=2–1 | 86340.1666(1) | 0.53 | 0.45(2) | 23 | 9.05 | 0.61 | 0.29(2) |
| DCN | J=1–0, F=0–1 | 72417.03(1) | 0.54 | 0.35(2) | 22 | 9.06 | 0.50 | 0.18(4) |
| H13CO+ | J=1–0 | 86754.288(5) | 0.53 | 1.95(1) | 24 | 8.97 | 0.60 | 1.24(2) |
| HC18O+ | J=1–0 | 85162.223(5) | 0.53 | 0.153(4) | 8 | 9.03 | 0.53 | 0.087(5) |
| DCO+ | J=1–0 | 72039.3124(8) | 0.54 | 3.01(1) | 22 | 9.04 | 0.74 | 2.38(2) |
| HN13C | J=1–0 | 87090.825(4) | 0.52 | 0.58(1) | 27 | 9.09 | 0.71 | 0.46(1) |
| HN13C | J=1–0, F1=0–1 F2=1–2, F =1–2 | 87090.675(3) | 0.52 | 0.090(5) | 27 | 9.78 | 0.35 | 0.034(7) |
| DNC | J,I,F=1,2,1–0,2,2; 1,2,1–0,0,0 | 76305.513(1) | 0.54 | 0.56(3) | 31 | 9.90 | 0.38 | 0.22(4) |
Notes. Numbers in brackets give the uncertainty on the last digit. (a)Extracted from Cologne Database for Molecular Spectroscopy (Müller et al. 2001). (b)The uncertainties of the fits are smaller than the velocity resolution. Therefore, the error on VLSR and Δυ are given by the observed spectral resolution, 0.07 km s−1.
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