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Table 1

Summary of derived parameters of the observed spectra toward the filaments of our sample.

Field/tracer Filament Ra Dec N H2 Mline VLSR Tpeak rms σobs σtot
(J2000) (J2000) [1021 cm-2] M⊙/pc [km s-1] [K(TA*)] [km s-1] [km s-1]
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12)
1 18:29:39.5 –01:50:14 213.4 252 7.70 1.43 0.67 0.60 0.64 0.01
2 18:32:38.5 –02:50:24 40.9 176 7.85 0.67 0.22 0.30 0.36 0.01
3 18:33:15.2 –02:48:14 13.0 35 6.42 0.65 0.13 0.11 0.23 0.01
4 18:33:06.7 –02:47:50 11.6 32 7.04 0.26 0.08 0.11 0.23 0.01
5 18:33:22.5 –02:42:30 12.8 20 6.84 0.16 0.05 0.15 0.25 0.01
6 18:29:36.6 –01:51:55 13.2 39 7.63 0.12 0.05 0.11 0.23 0.01
7 18:29:50.4 –01:54:47 37.9 123 7.67 1.18 0.25 0.18 0.27 0.01
Aquila 8 18:30:27.6 –01:55:32 35.2 139 7.42 0.41 0.13 0.20 0.28 0.01
N2H+(1−0) 9 18:30:19.1 –01:53:09 33.9 90 7.72 0.18 0.11 0.41 0.45 0.01
10 18:29:08.9 –01:42:40 29.9 121 7.05 0.76 0.18 0.21 0.29 0.01
11 18:29:19.9 –01:52:25 25.1 68 7.27 0.32 0.09 0.23 0.31 0.01
12 18:30:03.9 –02:04:29 20.3 73 7.12 0.68 0.19 0.19 0.27 0.06
13 18:29:55.8 –02:00:18 74.5 182 7.09 1.39 0.60 0.42 0.47 0.01
14 18:29:58.1 –01:57:38 55.8 265 7.41 0.45 0.21 0.44 0.48 0.01
15 18:28:50.1 –01:34:52 114.1 288 7.90 0.79 0.23 0.36 0.41 0.01
16 18:30:03.5 –02:02:26 10.9 35 7.36 0.37 0.07 0.10 0.22 0.01
17 18:29:55.4 –01:37:02 12.0 40 8.29 0.53 0.12 0.14 0.24 0.01
18 18:29:34.6 –01:55:15 9.2 38 7.34 0.10 0.04 0.15 0.25 0.01
2 21:46:28.1 47:17:34 25.3 80 4.69 0.61 0.17 0.19 0.27 0.01
IC 5146 6 21:47:17.2 47:33:01 17.0 109 3.69 0.32 0.11 0.25 0.32 0.01
N2H+(1−0) 12 21:44:58.4 47:34:15 14.7 41 4.11 0.40 0.13 0.19 0.28 0.01
13 21:47:07.9 47:39:30 17.1 50 4.35 0.25 0.10 0.22 0.30 0.01
Polaris 1 02:00:29.0 87:41:54 8.0 16 –4.62 0.18 0.01 0.13 0.24 0.01
N2H+(1−0)
19 18:29:53.5 –03:43:39 7.9 10 4.88 1.22 0.06 0.23 0.31 0.01
20 18:28:58.2 –01:22:51 7.8 28 7.17 1.10 0.04 0.30 0.36 0.01
21 18:31:06.4 –01:18:58 9.9 20 7.77 1.10 0.05 0.26 0.33 0.01
Aquila 22 18:33:15.8 –02:47:15 7.2 51 6.47 1.26 0.03 0.13 0.24 0.01
C18O(1−0) 23 18:22:51.1 –03:26:38 6.3 12 5.78 0.36 0.03 0.28 0.34 0.01
24 18:23:31.3 –03:03:43 7.2 15 6.87 0.89 0.03 0.27 0.34 0.01
25 18:29:45.6 –02:32:21 7.3 22 6.52 0.94 0.03 0.15 0.25 0.01
26 18:32:53.1 –01:29:42 7.0 21 7.28 0.28 0.03 0.16 0.26 0.01
3 21:46:42.1 47:44:26 2.8 3 1.89 0.80 0.08 0.17 0.26 0.01
5 21:45:15.3 47:46:52 3.0 11 1.42 0.63 0.09 0.24 0.31 0.02
IC 5146 7 21:44:37.1 47:42:39 5.2 11 3.71 0.76 0.09 0.29 0.35 0.02
C18O(2–1) 10 21:43:29.1 47:19:29 4.3 16 4.21 0.79 0.06 0.13 0.24 0.01
11 21:43:30.9 47:47:12 3.1 9 3.29 0.42 0.08 0.11 0.23 0.01
14 21:47:48.1 48:04:53 3.9 15 0.24 0.89 0.07 0.12 0.23 0.01
25 21:44:18.8 47:32:25 5.7 17 2.32 0.47 0.09 0.27 0.34 0.03
2 01:58:59.7 87:39:33 9.6 16 –4.29 2.65 0.04 0.22 0.29 0.01
3 01:40:31.4 87:46:19 2.4 15 –4.14 0.28 0.04 0.22 0.30 0.02
Polaris 4 01:31:21.7 87:45:56 2.7 25 –4.48 0.27 0.03 0.19 0.27 0.02
C18O(1−0) 5 02:00:49.1 87:35:18 3.4 15 –4.08 0.62 0.04 0.17 0.30 0.01
6 01:50:48.0 87:43:47 1.5 3 –3.46 0.19 0.04 0.19 0.28 0.02
7 03:36:47.4 88:08:13 2.3 16 –3.39 0.12 0.05 0.08 0.26 0.01

Notes. Columns 3 and 4: Equatorial coordinates providing the positions of the observed spectra. Columns 5 and 6: Projected column density and mass per unit length for each filament measured from Herschel column density maps. The listed values have not been corrected by the 60% systematic overestimation of true column densities and masses per unit length. All the filaments detected in N2H+ are supercritical while most of the filaments observed in C18O(1−0) and (2–1) and not detected in N2H+ are subcritical. Columns 7, 8 and 10: parameters of single and multiple Gaussian fits to the C18O and N observed spectra, respectively. For the N spectra Tpeak (Col. 8) corresponds to the peak temperature of the isolated component of the N multiplet. Column 9 gives the corresponding rms.The reference positions used for the sposition-switched N2H+ observations were selected from the Herschel images and correspond to 21:47:22.6 47:45:59 for IC 5146, 01:56:30.26 87:43:28 for Polaris, 18:28:23.9  − 02:00:22 for Aquila, except for filaments 3, 4 and 5 for which a reference position at 18:33:27.75 -02:51:22 was used.Columns 10 and 11: σobs and σtot are derived as explained in Sect. 3.

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