Table 1
Lines of sight with detections of OH 1665/1667 MHz absorption.
| Name | RA (J2000) | Dec (J2000) | Fc (20′′) | Fc(46′′) | Ext. | α | OH velocities | Ass. H II | H II-region |
|---|---|---|---|---|---|---|---|---|---|
 |
(°′′′) | [Jy beam−1] | [Jy beam−1] | [km s−1] | |||||
| G14.490+0.021 | 18 16 46.666 | −16 20 33.15 | 0.2 | 0.2 | 1 | +0.0 | (23.1) | (1) | G014.489+00.020 |
| G14.996−0.738 | 18 20 33.756 | −16 15 22.46 | 1.1 | 3.4 | 1 | +0.7 | 21.8 | 1 | G015.035−00.677; M17; S45 |
| G15.033−0.679 | 18 20 25.129 | −16 11 43.00 | 3.4 | 13.4 | 1 | +0.7 | 12.9 | 1 | G015.035−00.677; M17; S45 |
| G18.148−0.283 | 18 25 01.009 | −13 15 30.78 | 0.4 | 1.1 | 1 | +0.1 | 56.4 | 1 | G018.144−00.286 |
| G18.303−0.390 | 18 25 42.284 | −13 10 18.26 | 0.8 | 1.1 | 1 | +0.4 | (27.2), 32.2, (36.2) | (1), 1, (1) | G018.305−00.391 |
| G19.075−0.288 | 18 26 48.526 | −12 26 28.66 | 0.4 | 0.7 | 1 | +0.4 | 64.6 | 1 | G019.066−00.281; W39 |
| G21.347−0.629 | 18 32 20.815 | −10 35 11.37 | 1.0 | 1.0 | 0 | +0.0 | 56.1 | 0 | |
| G21.874+0.007 | 18 31 02.524 | −09 49 30.49 | 0.5 | 0.6 | 1 | +0.3 | 21.8 | 1 | G021.870+00.010 |
| G23.956+0.150 | 18 34 25.303 | −07 54 46.37 | 0.9 | 1.3 | 1 | +0.6 | 80.0 | 1 | G023.956+00.152 |
| G25.396+0.033 | 18 37 30.623 | −06 41 16.38 | 0.3 | 0.4 | 1 | +0.4 | −12.1 | 1 | G025.396+00.034 |
| G25.397−0.141 | 18 38 08.202 | −06 45 58.85 | 1.6 | 2.4 | 1 | +0.8 | 67.1, 94.5 | 1, 1 | G025.383−00.177 |
| G26.609−0.212 | 18 40 37.495 | −05 43 19.00 | 0.2 | 0.2 | 1 | +0.3 | −33.2 | 1 | G026.610−00.212a |
| G27.563+0.084 | 18 41 19.379 | −04 44 17.57 | 0.1 | 0.1 | 1 | +0.2 | 86.0 | 1 | G027.562+00.084 |
| G28.806+0.174 | 18 43 16.959 | −03 35 28.97 | 0.3 | 0.7 | 1 | +0.1 | 79.8, 103.5 | 0, 1 | G028.801+00.174 |
| G29.935−0.053 | 18 46 09.525 | −02 41 27.54 | 0.5 | 1.2 | 1 | +0.1 | 7.0, 50.6, 68.0, 98.9 | 0, 0, 0, 1 | G029.945−00.039; G29 |
| G29.957−0.018 | 18 46 04.241 | −02 39 19.25 | 1.4 | 2.0 | 1 | +0.9 | 8.0, 99.8 | 0, 1 | G029.945−00.039; G29 |
| G30.535+0.021 | 18 46 59.359 | −02 07 26.40 | 0.5 | 0.7 | 1 | +0.6 | (43.7, 49.4), 91.6 | (1, 1), 1 | G030.539+00.024 |
| G30.720−0.083* | 18 47 41.713 | −02 00 23.48 | 0.4 | – | 0 | +1.0 | 93.6 | 1 | G030.782−00.028; W43 |
| G30.783−0.028 | 18 47 36.898 | −01 55 30.26 | 1.3 | 3.9 | 1 | +0.3 | 77.9, 81.9, 87.1 | 1, 1, 1 | G030.782−00.028; W43 |
| 92.1, 98.6 | 1, 1 | ||||||||
| G30.854+0.151 | 18 47 06.546 | −01 46 49.14 | 0.1 | 0.3 | 1 | −0.1 | 95.4 | 1 | G030.852+00.149a |
| G31.242−0.110 | 18 48 44.821 | −01 33 14.65 | 0.4 | 0.5 | 1 | +0.5 | 19.6, 79.2, 83.7 | 1, 0, 0 | G031.239−00.108 |
| G31.388−0.383 | 18 49 59.195 | −01 32 56.04 | 1.2 | 1.2 | 0 | −0.9 | 18.1 | 0 | |
| G32.151+0.132 | 18 49 32.499 | −00 38 05.79 | 0.4 | 0.5 | 1 | +0.4 | 93.8 | 1 | G032.160+00.130 |
| G32.272−0.226 | 18 51 02.358 | −00 41 24.22 | 0.3 | 0.3 | 1 | +0.2 | 22.6 | 1 | G032.272−00.226 |
| G32.798+0.190 | 18 50 31.084 | −00 01 56.81 | 1.2 | 1.5 | 1 | +1.0 | 12.8 | 1 | G032.960+00.276 |
| G32.928+0.607 | 18 49 16.315 | 00 16 23.85 | 0.2 | 0.3 | 1 | +0.4 | (−33.9) | (1) | G032.928+00.607 |
| G33.915+0.110 | 18 52 50.381 | 00 55 29.56 | 0.6 | 0.8 | 1 | +0.5 | (95.3, 101.5), 106.3 | (1, 1), 1 | G033.910+00.110 |
| G34.132+0.471 | 18 51 57.102 | 01 16 58.86 | 0.4 | 0.5 | 1 | +0.2 | 33.8 | 1 | G034.133+00.471 |
| G35.467+0.139 | 18 55 34.169 | 02 19 11.16 | 0.2 | 0.3 | 1 | +0.6 | 77.0 | 1 | G035.470+00.140 |
| G37.764−0.215 | 19 01 02.118 | 04 12 03.76 | 0.4 | 1.1 | 1 | +0.1 | 63.4 | 1 | G037.760−00.200 |
| G37.874−0.399 | 19 01 53.641 | 04 12 52.52 | 1.3 | 1.8 | 1 | +0.5 | 61.0 | 1 | G037.870−00.400; W47 |
| G38.876+0.308 | 19 01 12.538 | 05 25 44.28 | 0.2 | 0.2 | 0 | +0.8 | −16.3 | 1 | G038.875+00.308 |
| G39.565−0.040 | 19 03 43.340 | 05 52 55.41 | 0.4 | 0.5 | 0 | −0.9 | 23.2 | 0 | |
| G39.883−0.346 | 19 05 24.156 | 06 01 28.52 | 0.2 | 0.3 | 0 | +0.8 | 56.9 | 1 | G039.883−00.346 |
| G41.741+0.097 | 19 07 15.655 | 07 52 42.12 | 0.3 | 0.3 | 1 | +0.3 | 14.2 | 1 | G041.740+00.100 |
| G42.027−0.604 | 19 10 18.252 | 07 48 32.39 | 0.3 | 0.4 | 1 | −1.0 | 65.1 | 0 | |
| G45.454+0.060 | 19 14 21.188 | 11 09 12.92 | 1.4 | 2.9 | 1 | +0.4 | 56.0, 59.4, 64.9 | 1, 1, 1 | G045.454+00.059; K47 |
| G49.206−0.342 | 19 23 00.834 | 14 16 50.73 | 0.8 | 2.3 | 1 | +0.2 | 65.3 | 1 | G049.205−00.343; W51 |
| G49.369−0.302 | 19 23 11.204 | 14 26 37.06 | 1.5 | 3.2 | 1 | +0.5 | 50.9, 62.9 | 1, 1 | G049.384−00.298; W51 |
| G49.459−0.353 | 19 23 32.908 | 14 29 55.71 | 1.9 | 3.9 | 1 | +1.3 | 62.0, 68.6 | 1, 1 | G049.490−00.381; W51 |
| G49.488−0.380 | 19 23 42.119 | 14 30 41.99 | 4.0 | 11.1 | 1 | +1.3 | 65.9 | 1 | G049.490−00.381; W51 |
| G52.753+0.334 | 19 27 32.385 | 17 43 27.32 | 0.3 | 0.3 | 1 | +0.1 | 12.1, 45.2 | 1, 0 | G052.757+00.334 |
| G60.882−0.132 | 19 46 20.621 | 24 35 17.59 | 0.2 | 0.3 | 1 | +0.0 | 22.3 | 1 | G060.883−00.133; S87 |
| G61.475+0.092 | 19 46 48.189 | 25 12 47.06 | 2.1 | 3.5 | 1 | +0.5 | (5.9), 21.1 | (0), 1 | G061.477+00.094; S88 |
Notes. The source name is constructed from the Galactic coordinates at which the peak of the continuum emission measured at 20′′ resolution occurs. The columns Fc denotes the flux density at the given coordinates for an angular resolution of 20′′ and 46′′. The column “Ext.” denotes whether the source is resolved (1 for resolved, 0 for unresolved sources), and the column α is the L-band spectral index, defined as I(ν) ∝ να, which are both taken from Bihr et al. (2016) and Wang et al. (2018). The central velocities of detected OH main line absorption are summarized in Col. 8 “OH velocities” (tentative, 3σ components are listed in brackets in Cols. 8 and 9). Association in position and velocity with an H II region is indicated with 1 in Col. 9. Criteria for the association are a smaller angular separation from the H II region than its radius, and a velocity difference of less than 10 km s −1. The name of the H II regions are obtained from the WISE catalog of H II-regions (Anderson et al. 2014). (*)Used 20′′ resolution data only in order not to blend OH absorption with adjacent maser.
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