Table 1
6.7 GHz methanol masers detected with the Arecibo telescope.
| Name | RA | DEC | V min | V max | S pk |
|
Nearest source | Ang. separ. | d | New? | Ref.a |
| [J2000.0] | [J2000.0] | [km s-1] | [km s-1] | [Jy] | [Jy km s-1] | [arcsec] | [kpc] | ||||
|
|
|||||||||||
| G32.14+0.13 | 18:49:32.5 | –00:38:09 | 92.3 | 93.2 | 0.03 | 1.1E-02 | G32.11+0.09 | 189 | 6.1 | Y | − |
| G32.11+0.09 | 18:49:37.7 | –00:41:00 | 90.2 | 104.5 | 1.2 | 7.7E-01 | G32.14+0.13 | 189 | 5.2b | N | S1999 |
| G32.74-0.07 | 18:51:21.8 | –00:12:05 | 24.1 | 47.9 | 48 | 1.1E+02 | − | − | 2.5 | N | CAS1995 |
| G33.09+0.06 | 18:51:30.5 | 00:10:41 | 77.9 | 84.9 | 0.14 | 9.2E-02 | − | − | 5.3 | Y | − |
| G32.82-0.08 | 18:51:32.1 | –00:07:51 | 58.4 | 60.3 | 0.05 | 3.7E-02 | − | − | 5.9 | Y | − |
| G33.13-0.09 | 18:52:07.9 | 00:08:13 | 70.4 | 82.2 | 11 | 1.5E+01 | − | − | 4.9 | N | SHK2000 |
| G33.41-0.00 | 18:52:20.1 | 00:25:47 | 97.0 | 108.2 | 0.43 | 8.3E-01 | − | − | − | N | SHK2000 |
| G33.59-0.03 | 18:52:46.0 | 00:34:09 | 102.6 | 103.5 | 0.02 | 1.4E-02 | G33.61-0.03 | 107 | − | Y | − |
| G33.61-0.03 | 18:52:49.0 | 00:35:46 | 102.8 | 103.8 | 0.07 | 5.2E-02 | G33.59-0.03 | 107 | 6.5b | Y | − |
| G33.65-0.02 | 18:52:50.2 | 00:37:40 | 101.6 | 103.7 | 0.06 | 4.1E-02 | G33.61-0.03 | 114 | 4.5 | Y | − |
| G34.37+0.23 | 18:53:13.6 | 01:23:31 | 54.9 | 63.7 | 1.6 | 9.9E-01 | − | − | 1.6b | N | SHK2000 |
| G34.08+0.01 | 18:53:30.5 | 01:02:03 | 54.7 | 61.6 | 0.73 | 5.5E-01 | − | − | 3.7 | N | SKH2002 |
| G35.46+0.13 | 18:55:34.2 | 02:19:11 | 73.2 | 74.4 | 0.02 | 1.4E-02 | − | − | 5.1 | Y | − |
| G34.19-0.59 | 18:55:51.2 | 00:51:18 | 57.6 | 63.1 | 0.22 | 1.8E-01 | − | − | 3.8 | Y | − |
| G35.57-0.03 | 18:56:22.6 | 02:20:28 | 127.0 | 127.6 | 0.02 | 6.0E-03 | − | − | 10.4 | Y | − |
| G34.71-0.59 | 18:56:48.2 | 01:18:46 | 77.8 | 80.0 | 0.01 | 4.0E-03 | − | − | − | Y | − |
| G35.13-0.74 | 18:58:06.0 | 01:37:06 | 26.1 | 40.8 | 32 | 3.5E+01 | G35.14-0.75 | 62 | 2.2b | N | SHK2000 |
| G35.14-0.75 | 18:58:09.9 | 01:37:27 | 26.2 | 39.4 | 1.7 | 1.8E+00 | G35.13-0.74 | 62 | 2.3 | N | SHK2000 |
| G36.42-0.16 | 18:58:23.2 | 03:02:11 | 71.4 | 72.3 | 0.03 | 1.1E-02 | − | − | 8.6 | Y | − |
| G36.83-0.02 | 18:58:39.0 | 03:28:00 | 52.7 | 64.5 | 2.5 | 6.4E+00 | − | − | 3.9 | N | PGD2007c |
| G37.04-0.03 | 18:59:04.2 | 03:38:34 | 77.9 | 86.5 | 9.6 | 1.8E+01 | − | − | 5.6 | N | P2011 |
| G37.34-0.06 | 18:59:43.1 | 03:53:39 | 51.3 | 52.6 | 0.02 | 1.5E-02 | − | − | 9.8 | Y | − |
| G37.19-0.41 | 19:00:43.4 | 03:36:24 | 29.4 | 30.1 | 0.07 | 2.3E-02 | − | − | 11.1 | Y | − |
| G37.86-0.60 | 19:02:36.0 | 04:07:03 | 49.3 | 54.2 | 0.19 | 2.5E-01 | − | − | 3.4 | Y | − |
| G38.93-0.36 | 19:03:42.0 | 05:10:23 | 31.0 | 33.8 | 0.04 | 4.6E-02 | − | − | 2.7 | N | SHK2000, PGD2007 |
| G39.99-0.64 | 19:06:39.9 | 05:59:13 | 71.5 | 72.1 | 0.02 | 5.0E-03 | − | − | 4.3 | Y | − |
| G41.13-0.19 | 19:07:10.2 | 07:12:16 | 55.6 | 63.8 | 0.03 | 1.4E-02 | G41.16-0.18 | 106 | 4.3 | Y | − |
| G41.16-0.18 | 19:07:11.2 | 07:14:02 | 55.6 | 63.6 | 0.07 | 8.1E-02 | G41.13-0.19 | 106 | 4.2 | Y | − |
| G41.05-0.24 | 19:07:12.4 | 07:06:25 | 65.0 | 65.7 | 0.12 | 4.3E-02 | − | − | 8.1 | Y | − |
| G43.10+0.04 | 19:09:59.7 | 09:03:58 | 8.8 | 10.1 | 0.02 | 1.9E-02 | − | − | 11.1b | Y | − |
| G43.53+0.01 | 19:10:52.9 | 09:25:44 | 51.6 | 52.9 | 0.09 | 2.8E-02 | − | − | − | Y | − |
| G47.04+0.25 | 19:16:41.5 | 12:39:19 | 101.5 | 102.0 | 0.02 | 3.5E-03 | − | − | 4.7 | Y | − |
| G45.87-0.37 | 19:16:42.9 | 11:19:10 | 59.6 | 60.5 | 0.02 | 1.1E-02 | − | − | 5.2 | Y | − |
| G46.32-0.25 | 19:17:09.0 | 11:46:24 | 41.5 | 41.9 | 0.02 | 5.0E-03 | − | − | 7.4 | Y | − |
| G56.96-0.23 | 19:38:16.8 | 21:08:07 | 29.3 | 30.6 | 1.1 | 4.2E-01 | − | − | 3.0 | Y | − |
| G59.78+0.63 | 19:41:03.0 | 24:01:15 | 36.2 | 40.6 | 0.03 | 2.7E-02 | − | − | 2.1 | Y | − |
| G59.63-0.19 | 19:43:49.9 | 23:28:37 | 21.9 | 32.8 | 0.58 | 5.1E-01 | − | − | 2.3 | Y | − |
Notes. Source names in boldface indicate an OH maser counterpart determined using both positional and velocity association criteria (see Table 2). Vmin and Vmax are the minimum and maximum velocity corresponding to the range of emission of the maser. Spk is the peak flux density, and ∫S dV is the integrated flux density in the velocity range [Vmin,Vmax]. The 8th and 9th columns show the nearest Hi-GAL source (if the angular separation is ≤200 arcsec) for crowded fields, and the corresponding angular separation. In this case they are either the same source or there is likely some contamination from the sidelobes. d is the estimated distance of the Hi-GAL source (the typical error on the distance is ~0.6–0.9 kpc). The 11th column indicates whether the maser is a new detection (Y) or a known source (N).
S1999, Slysh et al. (1999). CAS1995, Caswell et al. (1995). SHK2000, Szymczak et al. (2000). SKH2002, Szymczak et al. (2002). PGD2007, Pandian et al. (2007). P2011, Pandian et al. (2011).
Distance determined from the BeSSeL Survey (see Sect. 3.1).
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