Table 2
Line properties of OH 1665/1667 MHz absorption and 13CO(1–0) emission.
| OH 1665 MHz | OH 1667 MHz | 13CO(1–0) | Notes | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Name | v | Δv | Fpeak | τpeak | ∫ τdv | v | Δv | Fpeak | τpeak | ∫ τdv | v | Δv | Tmb, p | ∫ Tmbdv | Ass. | Int. Range | FWHM | Int. | |
| [km s−1] | [km s−1] | [Jy beam−1] | [km s−1] | [km s−1] | [km s−1] | [Jy beam−1] | [km s−1] | [km s−1] | [km s−1] | [K] | [K km s−1] | H II | [km s−1, [km s−1] | ||||||
| G14.490+0.021 | 23.1 | 2.9 | −0.06 | 0.34a | <1.35 | – | – | – | – | – | – | – | – | – | (1) | [+19.4, +27.1] | 2(OH) | 2(OH) | |
| G14.996−0.738 | 21.8 | 4.0 | −0.28 | 0.08 | 0.37 | – | – | – | – | – | – | – | – | – | 1 | [+16.0, +28.0] | 1 | 1 | |
| G15.033−0.679 | 12.9 | 5.4 | −0.49 | 0.04 | 0.21 | – | – | – | – | – | – | – | – | – | 1 | [+7.0, +16.6] | 1 | 1 | |
| G18.148−0.283 | 56.4 | 3.5 | −0.22 | 0.22 | 0.81 | – | – | – | – | – | 55.5 | 3.7 | 6.81 | 32.84 | 1 | [+51.2, +61.0] | 1665 | 1665 | |
| G18.303−0.390 | 27.2 | 4.3 | −0.04 | 0.03a | –b | – | – | – | – | – | – | – | – | – | (1) | – | 3(OH) | 3(OH) | |
| 32.2 | 2.5 | −0.15 | 0.14 | 0.47 | – | – | – | – | – | 33.0 | 4.1 | 7.69 | 34.90 | 1 | [+27.0, +38.0] | 4(CO) | 1665 | ||
| 36.2 | 2.5 | −0.02 | 0.02a | –b | – | – | – | – | – | – | – | – | – | (1) | – | 3(OH) | 3(OH) | ||
| G19.075−0.288 | 64.6 | 7.4 | −0.11 | 0.17 | 1.35 | – | – | – | – | – | 65.1 | 6.1 | 7.52 | 55.94 | 1 | [+56.9, +75.0] | 4(OH) | 1665 | |
| G21.347−0.629 | 56.1 | 2.5 | −0.15 | 0.16 | 0.47 | – | – | – | – | – | 56.2 | 1.8 | 3.43 | 21.95 | 0 | [+48.0, +58.6] | 1665 | 4(CO) | |
| G21.874+0.007 | 21.8 | 8.8 | −0.08 | 0.10 | 1.01 | – | – | – | – | – | 22.3 | 4.9 | 5.86 | 30.52 | 1 | [+15.5, +27.0] | 5(OH) | 1665 | |
| G23.956+0.150 | 80.0 | 5.5 | −0.08 | 0.06 | 0.38 | – | – | – | – | – | 79.6 | 3.6 | 9.31 | 38.99 | 1 | [+74.9, +86.1] | 4(CO) | 1665 | |
| G25.396+0.033 | −12.1 | 2.7 | −0.10 | 0.25 | 0.80 | – | – | – | – | – | – | – | – | – | 1 | [−15.1, −8.9] | 1 | 1 | |
| G25.397−0.141 | 67.1 | 5.3 | −0.12 | 0.05 | 0.26 | – | – | – | – | – | 66.5 | 5.7 | 1.75 | 10.12 | 1 | [+61.4, +72.5] | 4(CO) | 1665 | |
| 94.5 | 5.8 | −0.35 | 0.17 | 0.96 | – | – | – | – | – | 96.3 | 6.9 | 8.04 | 60.09 | 1 | [+88.0,+105.0] | 4(CO,OH) | 1665 | ||
| G26.609−0.212 | −33.2 | 2.5 | −0.07 | 0.42 | 0.77 | – | – | – | – | – | – | – | – | – | 1 | [−37.6, −29.9] | 1 | 1 | |
| G27.563+0.084 | 86.0 | 2.5 | −0.06 | 0.61 | 1.81 | – | – | – | – | – | 85.8 | 3.2 | 3.30 | 29.90 | 1 | [+78.0, +89.0] | 5(OH) | 1665 | |
| G28.806+0.174 | 79.8 | 2.5 | −0.08 | 0.12 | 0.39 | – | – | – | – | – | 80.6 | 3.1 | 2.26 | 10.72 | 0 | [+76.4, +83.0] | 4(CO) | 1665 | |
| 103.5 | 3.8 | −0.07 | 0.12 | 0.38 | – | – | – | – | – | 104.8 | 5.6 | 6.57 | 41.67 | 1 | [+98.0,+115.0] | 1665 | 4(CO) | ||
| G29.935−0.053 | – | – | – | – | <0.14 | 7.0 | 2.5 | −0.05 | 0.04 | 0.11 | – | – | – | <2.34 | 0 | [+2.0, +12.0] | 2(CO) | 1667 | |
| – | – | – | – | <0.15 | 50.6 | 2.5 | −0.08 | 0.06 | 0.14 | 49.9 | 2.2 | 3.39 | 8.32 | 0 | [+47.0, +53.0] | 5(CO) | 1667 | ||
| – | – | – | – | <0.14 | 68.0 | 2.5 | −0.09 | 0.07 | 0.19 | 68.1 | 3.1 | 1.15 | 4.20 | 0 | [+61.0, +74.0] | 5(CO) | 1667 | ||
| 98.8 | 4.3 | −0.12 | 0.10 | 0.47 | 99.0 | 4.1 | −0.16 | 0.12 | 0.64 | 99.4 | 8.3 | 11.09 | 95.48 | 1 | [+90.0,+105.6] | 4(CO) | 1667 | ||
| G29.957−0.018 | 8.2 | 2.7 | −0.06 | 0.03 | 0.07 | 7.8 | 2.6 | −0.11 | 0.05 | 0.17 | 7.4 | 1.7 | 1.31 | 1.61 | 0 | [+2.0, +13.0] | 1667 | 1667 | |
| – | – | – | – | –c | 99.8 | 5.1 | −0.08 | 0.04 | 0.19 | 98.0 | 7.2 | 13.33 | 101.98 | 1 | [+93.0,+107.0] | 4(CO) | 4(CO) | ||
| G30.535+0.021 | – | – | – | – | –c | 43.7 | 4.7 | −0.05 | 0.07a | –b | – | – | – | – | 1 | – | 2(OH) | 2(OH) | |
| – | – | – | – | 0.28 | 49.4 | 3.5 | −0.04 | 0.06a | 0.57 | 47.7 | 4.4 | 4.96 | 42.44 | 1 | [+33.0, +54.0] | 2(OH) | 2(OH) | ||
| 91.0 | 5.6 | −0.06 | 0.11 | 0.67 | 92.1 | 5.4 | −0.08 | 0.12 | 0.74 | 91.9 | 6.4 | 3.57 | 22.10 | 1 | [+86.9, +98.0] | 5(OH) | 1667 | ||
| G30.720−0.083* | 93.1 | 5.8 | −0.25 | 0.80 | –c | 94.1 | 5.8 | −0.34 | 1.29 | –c | 94.0 | 9.2 | 8.36 | 73.81 | 1 | [+87.0,+101.0] | 7 | 7 | |
| G30.783−0.028 | – | – | – | – | – | 77.9 | 3.4 | −0.13 | 0.04 | –b | – | – | – | – | 1 | – | 3(OH) | 3(OH) | |
| 81.6 | 6.3 | −0.14 | 0.02 | 0.20 | 82.2 | 2.5 | −0.44 | 0.11 | 0.39 | 81.9 | 5.6 | 2.30 | 12.18 | 1 | [+79.0, +85.6] | 4(CO) | 1667 | ||
| 87.1 | 2.7 | −0.06 | 0.02 | –b | – | – | – | – | – | – | – | – | – | 1 | – | 3(OH) | 3(OH) | ||
| 92.0 | 3.5 | −0.25 | 0.07 | 0.39 | 92.2 | 3.5 | −0.32 | 0.09 | 0.55 | 93.3 | 8.7 | 7.41 | 70.82 | 1 | [+85.0,+103.0] | 4(CO) | 1667 | ||
| 98.3 | 3.4 | −0.07 | 0.01 | –b | 98.8 | 4.2 | −0.10 | 0.03 | –b | 104.9 | 5.6 | 1.78 | –b | 1 | – | 3(OH) | 3(OH) | ||
| G30.854+0.151 | 95.5 | 2.9 | −0.14 | 0.52 | 1.36 | 95.3 | 3.2 | −0.16 | 0.63 | 2.01 | 95.5 | 4.1 | 6.72 | 27.98 | 1 | [+91.0, +98.5] | 1667 | 1667 | |
| G31.242−0.110 | – | – | – | – | –c | 19.6 | 2.6 | −0.12 | 0.26 | 0.83 | 20.8 | 3.8 | 3.33 | 12.45 | 1 | [+15.0, +23.0] | 1667 | 1667 | |
| 79.4 | 4.1 | −0.07 | 0.15 | 0.57 | 78.9 | 2.5 | −0.11 | 0.25 | 0.65 | 78.8 | 4.0 | 3.09 | 12.57 | 0 | [+75.0, +81.8] | 4 | 1667 | ||
| – | – | – | – | <0.29 | 83.7 | 2.5 | −0.07 | 0.14 | 0.30 | 84.0 | 2.4 | 1.96 | 5.34 | 0 | [+81.8, +87.1] | 4 | 1667 | ||
| G31.388−0.383 | 18.4 | 2.5 | −0.08 | 0.06 | 0.17 | 17.9 | 2.5 | −0.11 | 0.09 | 0.20 | – | – | – | <1.79 | 0 | [+15.0, +22.0] | 2(CO) | 1667 | |
| G32.151+0.132 | 93.8 | 6.0 | −0.10 | 0.19 | 1.20 | – | – | – | – | – | 94.4 | 4.5 | 7.24 | 33.72 | 1 | [+88.0,+101.0] | 1665 | 1665 | |
| G32.272−0.226 | 22.6 | 4.6 | −0.06 | 0.19 | 0.91 | – | – | – | – | – | 22.4 | 5.7 | 1.20 | 6.76 | 1 | [+18.0, +27.0] | 4(CO) | 1665 | |
| G32.798+0.190 | 12.8 | 11.8 | −0.17 | 0.12 | 1.45 | – | – | – | – | – | 15.1 | 7.4 | 6.61 | 51.69 | 1 | [+0.0, +25.0] | 1665 | 1665 | |
| G32.928+0.607 | −33.9 | 2.9 | −0.05 | 0.21a | 0.64 | – | – | – | – | – | – | – | – | – | 1 | [−41.0, −28.0] | 1 | 1 | |
| G33.915+0.110 | 95.3 | 3.4 | −0.04 | 0.06a | 0.16 | – | – | – | – | – | – | – | – | <2.28 | 1 | [+92.0, +96.5] | 2(OH) | 2(OH) | |
| 101.5 | 2.9 | −0.06 | 0.08a | 0.28 | – | – | – | – | – | – | – | – | <2.28 | 1 | [+96.5,+104.0] | 2(OH) | 2(OH) | ||
| 106.3 | 2.7 | −0.11 | 0.16 | 0.46 | – | – | – | – | – | 107.5 | 4.6 | 6.80 | 32.47 | 1 | [+103.4,+113.0] | 1665 | 1665 | ||
| G34.132+0.471 | 33.8 | 3.1 | −0.08 | 0.17 | 0.59 | – | – | – | – | – | 35.1 | 3.8 | 2.93 | 11.88 | 1 | [+28.0, +39.5] | 1665 | 1665 | |
| G35.467+0.139 | 77.0 | 2.9 | −0.07 | 0.32 | 0.86 | – | – | – | – | – | 77.4 | 3.2 | 8.73 | 29.92 | 1 | [+74.0, +80.1] | 1665 | 1665 | |
| G37.764−0.215 | 63.4 | 4.3 | −0.32 | 0.28 | 1.64 | – | – | – | – | – | 61.5 | 5.6 | 3.29 | 35.33 | 1 | [+56.5, +69.5] | 4 | 1665 | |
| G37.874−0.399 | 61.0 | 10.1 | −0.31 | 0.19 | 1.91 | – | – | – | – | – | 61.4 | 7.2 | 4.29 | 32.56 | 1 | [+52.5, +67.5] | 5(OH) | 1665 | |
| G38.876+0.308 | −16.4 | 2.9 | −0.07 | 0.38 | 1.03 | −16.1 | 4.1 | −0.08 | 0.48 | 1.79 | – | – | – | – | 1 | [−20.0, −13.0] | 1 | 1 | |
| G39.565−0.040 | 23.4 | 2.8 | −0.10 | 0.24 | 0.66 | 23.1 | 2.5 | −0.15 | 0.37 | 0.96 | 23.4 | 3.1 | 1.25 | 4.65 | 0 | [+17.0, +28.0] | 1667 | 1667 | |
| G39.883−0.346 | 56.9 | 4.8 | −0.05 | 0.23 | 1.23 | 56.9 | 3.5 | −0.09 | 0.45 | 1.50 | 58.7 | 4.6 | 4.60 | 23.11 | 1 | [+50.5, +63.5] | 1667 | 1667 | |
| G41.741+0.097 | 14.4 | 8.2 | −0.04 | 0.17 | 0.47 | 13.9 | 4.3 | −0.05 | 0.18 | 0.52 | 13.4 | 2.9 | 2.44 | 5.79 | 1 | [+10.0, +14.2] | 5(OH) | 1667 | |
| G42.027−0.604 | – | – | – | – | <0.33 | 65.1 | 3.5 | −0.05 | 0.14 | 0.59 | 65.5 | 3.9 | 3.02 | 12.48 | 0 | [+62.0, +71.0] | 4(CO) | 1667 | |
| G45.454+0.060 | – | – | – | – | – | 56.0 | 7.2 | −0.17 | 0.07 | –b | – | – | – | – | 1 | – | 3(OH) | 3(OH) | |
| 59.3 | 4.1 | −0.19 | 0.07 | –c | 59.5 | 2.5 | −0.38 | 0.18 | 0.83 | 58.9 | 5.9 | 8.02 | 45.42 | 1 | [+53.2, +62.3] | 4(CO) | 1667 | ||
| – | – | – | – | – | 64.9 | 8.2 | −0.09 | 0.03 | –c | – | – | – | – | 1 | – | 3(OH) | 3(OH) | ||
| G49.206−0.342 | 65.3 | 6.4 | −0.52 | 0.24 | 1.79 | – | – | – | – | – | 65.7 | 6.0 | 4.31 | 28.54 | 1 | [+55.0, +73.0] | 1665 | 1665 | |
| G49.369−0.302 | 50.9 | 4.4 | −0.75 | 0.24 | 1.26 | – | – | – | – | – | 51.1 | 4.5 | 11.71 | 61.22 | 1 | [+44.5, +57.5] | 1665 | 1665 | |
| 62.9 | 5.2 | −0.33 | 0.11 | 0.63 | – | – | – | – | – | 61.1 | 2.3 | 4.11 | 24.18 | 1 | [+56.5, +69.5] | 4 | 1665 | ||
| G49.459−0.353 | 62.0 | 7.4 | −0.36 | 0.10 | 0.68 | – | – | – | – | – | 61.1 | 8.2 | 4.55 | 34.25 | 1 | [+55.0, +65.0] | 4 | 1665 | |
| 68.6 | 3.7 | −0.81 | 0.22 | 1.01 | – | – | – | – | – | 68.6 | 4.7 | 7.47 | 40.51 | 1 | [+65.0, +73.0] | 1665 | 1665 | ||
| G49.488−0.380 | 65.9 | 2.5 | −1.89 | 0.18 | 0.48 | – | – | – | – | – | 67.8 | 4.0 | 6.13 | 44.89 | 1 | [+63.0, +72.5] | 4 | 4 | |
| G52.753+0.334 | 13.6 | 2.9 | −0.02 | 0.07a | <0.35 | 10.6 | 4.8 | −0.04 | 0.12 | 0.31 | 15.2 | 2.3 | 2.86 | 7.22 | 1 | [+11.5, +18.5] | 7 | 7 | |
| 45.3 | 2.5 | −0.01 | 0.04a | <0.32 | 45.0 | 2.5 | −0.05 | 0.14 | 0.36 | 44.5 | 2.8 | 2.00 | 5.18 | 0 | [+43.0, +47.0] | 5(OH) | 1667 | ||
| G60.882−0.132 | 22.3 | 3.7 | −0.06 | 0.19 | 0.70 | 22.3 | 4.2 | −0.08 | 0.30 | 1.35 | 22.4 | 3.9 | 13.73 | 56.08 | 1 | [+17.0, +28.0] | 1667 | 1667 | |
| G61.475+0.092 | – | – | – | – | <0.03 | 5.9 | 4.2 | −0.04 | 0.01a | 0.05 | 6.6 | 0.6 | 1.18 | 0.24 | (0) | [+2.5, +10.0] | 2(OH) | 2(OH) | |
| 21.2 | 2.5 | −1.38 | 0.40 | 1.22 | 21.1 | 2.5 | −1.77 | 0.51 | 1.66 | 21.6 | 3.6 | 15.02 | 56.84 | 1 | [+17.5, +25.0] | 1667 | 1667 | ||
Notes. Gaussian profiles are fitted to the OH 1665 MHz and OH 1667 MHz absorption spectra to determine the central velocity (v), the full width of half maximum (Δ v) and the minimum line depth (Fpeak). Similarly, the line parameters of the 13CO(1–0) emission are determined. The peak optical depth (τpeak) is determined by fitting Gaussians to the optical depth spectra. The velocity integrated optical depth (∫ τdv) and 13CO(1–0) emission is determined by summing all channels over a common range of OH absorption and 13CO(1–0) emission (Col. “Int. Range”). For lines that were not detected, 3σ upper limits (“<”) are given under the assumption of an average line width of 3.6 km s −1 for the OH 1665 MHz transition and 4.0 km s−1 for the 13CO(1–0) transition. Notes on each detection indicate if the OH transition at 1665 MHz or at 1667 MHz (“1665”/“1667”) was used for the linewidth comparison (“FWHM”; Fig. 6) or the OH abundance (“Int.”; Figs. 7–9 and 13). Numbers specify why a transition was not used: (1) no 13CO(1–0) data available; (2) weak or non-detection; (3) auxiliary fit component; (4) blended components could not be separated; (5) bad fit; (6) no velocity overlap between OH and 13CO(1–0); (7) OH spectrum affected by emission of a maser at this position or close-by. (a)3σ detection; (b)included in integration of an adjacent component; (c)this transition is affected by emission of a maser at this position or close-by; (*)data at 20′′ resolution was used in order not to blend with an adjacent maser.
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