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Table 2

Log of the spectroscopic observations presented in this paper (see text for details).

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12)
Object RA X-ray Dec X-ray Error radius RA opt. Dec opt. Telescope+instrument λ range Disp. Resolution UT date and time Exposure
(J2000) (J2000) (arcsec) (J2000) (J2000) (Å) (Å/pix) FWHM (Å) at mid-exposure time (s)

2PBC J0057.2+6401 00:57:12.77 +63:59:41.3 3.6 00:57:12.85 +63:59:42.9 TNG+DOLoReS 3700–8000 2.5 10 02 Aug. 2011, 04:48 2 × 1200
2PBC J0116.51235 01:16:31.05 12:36:19.0 3.5 01:16:31.14 12:36:17.0 TNG+DOLoReS 3700–8000 2.5 15 19 Aug. 2011, 04:29 2 × 900
2PBC J0128.5+1628 01:28:24.46 +16:27:30.4 3.9 01:28:24.45 +16:27:33.5 SPM 2.1 m+B&C Spec. 3300–7900 4.0 18 28 Sep. 2011, 07:36 2 × 1800
2PBC J0154.15034 01:53:50.90 50:31:36.8 6.0 01:53:51.51 50:31:37.7 NTT+EFOSC2 3685-9315 2.8 21 29 Aug. 2015, 06:30 2 × 600
2PBC J0217.07250 02:17:36.10 72:51:27.7 6.0 02:17:35.72 72:51:28.1 NTT+EFOSC2 3685–9315 2.8 21 28 Aug. 2015, 10:09 2 × 300
2PBC J0252.3+4309 02:52:34.02 +43:10:01.8 4.1 02:52:34.02 +43:10:02.8 SPM 2.1 m+B&C Spec. 3300–7900 4.0 18 29 Sep. 2011, 09:04 2 × 1800
2PBC J0356.66252 03:56:19.66 62:51:36.6 4.1 03:56:19.97 62:51:39.1 CTIO 1.5 m+RC Spec. 3300–10 500 5.7 14 24 Sep. 2011, 05:40 2 × 1800
2PBC J0440.66507 04:40:35.30 65:07:50.8 6.0 04:40:35.63 65:07:48.7 NTT+EFOSC2 3685–9315 2.8 21 29 Aug. 2015, 06:57 2 × 600
2PBC J0505.46734 05:05:24.33 67:34:35.5 2.0 05:05:24.50U 67:34:36.2U CTIO 1.5 m+RC Spec. 3300–10 500 5.7 14 24 Sep. 2011, 07:34 2 × 1500
2PBC J0550.72304 05:50:39.10 23:11:16.4 6.0 05:50:39.51 23:11:17.7 CTIO 1.5 m+RC Spec. 3300–10 500 5.7 14 02 Oct. 2011, 08:40 2 × 400
2PBC J0608.0+5749 06:08:09.40 +57:51:07.9 6.0 06:08:09.67 +57:51:04.5 SPM 2.1 m+B&C Spec. 3300–7900 4.0 18 27 Feb. 2015, 04:09 3 × 1200
2PBC J0620.82932,° 06:20:59.90 29:27:31.6 6.0 06:21:00.05 29:27:34.6 SPM 2.1 m+B&C Spec. 3300–7900 4.0 18 04 Dec. 2013, 08:37 1200+900
2PBC J0640.14740 06:40:13.46 47:41:33.4 3.9 06:40:13.53 47:41:34.3 CTIO 1.5 m+RC Spec. 3300–10 500 5.7 14 17 Nov. 2011, 04:43 2 × 1800
(=Swift J064013.50474132.9)
2PBC J0653.11227 06:53:16.40 12:29:37.3 6.0 06:53:16.60 12:29:37.0 TNG+DOLoReS 3700–8000 2.5 15 03 Feb. 2013, 22:55 2 × 1800
2PBC J0658.01746 06:58:06.08 17:44:21.0 3.6 06:58:05.87U 17:44:16.3U Radcliffe+Gr. Spec. 3750–7750 2.3 6 20 Nov. 2011, 07:20 1310
(=1RXS J065806.3174427)
2PBC J0709.53538 07:09:31.80 35:37:46.2 6.0 07:09:32.05 35:37:46.4 SPM 2.1 m+B&C Spec. 3300–7900 4.0 18 05 Dec. 2013, 11:00 2 × 1800
2PBC J0714.62521 07:14:37.10 25:17:22.9 6.0 07:14:36.98 25:17:25.2 TNG+DOLoReS 3700–8000 2.5 15 04 Feb. 2013, 00:38 2 × 1200
2PBC J0717.82156 07:17:48.28 21:53:03.0 3.6 07:17:48.28U 21:53:05.1U TNG+DOLoReS 3700–8000 2.5 20 22 Oct. 2012, 04:11 1200
(=1RXS J071748.9215306)
2PBC J0751.6+6450 07:51:44.70 +64:48:59.7 6.0 07:51:45.41 +64:49:03.7 Cassini+BFOSC 3500–8700 4.0 12 21 Mar. 2013, 21:37 1800
2PBC J0757.9+0113 07:57:44.10 +01:13:42.9 6.0 07:57:44.00 +01:13:42.7 TNG+DOLoReS 3700–8000 2.5 15 04 Jan. 2014, 00:24 2 × 1200
2PBC J0800.54306, 08:00:39.99 43:11:06.4 3.5 08:00:39.98 43:11:07.6 CTIO 1.5m+RC Spec. 3300–10 500 5.7 14 07 Dec. 2011, 03:48 2 × 1800
(=Swift J080040.2431107)
2PBC J0812.34003 08:12:14.16 40:03:23.7 3.5 08:12:14.01 40:03:23.9 CTIO 1.5m+RC Spec. 3300–10 500 5.7 14 24 Nov. 2011, 06:58 3 × 1800
(=1RXS J081215.2400336)
2PBC J0819.22508 08:19:14.80 25:11:17.1 6.0 08:19:14.74 25:11:16.6 CTIO 1.5m+RC Spec. 3300–10 500 5.7 14 17 Nov. 2011, 05:45 2 × 1000
2PBC J0838.7+2612 08:38:57.00 +26:10:37.5 6.0 08:38:56.88 +26:10:37.5 SDSS+CCD Spc. 3800–9200 1.0 3 08 Dec. 2004, 00:00 4300
2PBC J0854.30826 08:54:29.20 08:24:28.6 2.7 08:54:29.27 08:24:27.6 TNG+DOLoReS 3700–8000 2.5 15 01 Dec. 2011, 02:41 2 × 900
(=Swift J085429.35082428.6)
2PBC J1020.50235, 10:21:02.90 02:36:46.0 6.0 10:21:03.09U 02:36:42.6U TNG+DOLoReS 3700–8000 2.5 15 04 Jan. 2014, 05:34 2 × 1200
2PBC J1042.2+0043 10:42:08.33 +00:42:06.8 3.6 10:42:08.36 +00:42:06.0 TNG+DOLoReS 3700–8000 2.5 20 23 Feb. 2012, 05:40 2 × 1500
2PBC J1228.10925 12:28:10.00 09:27:03.9 6.0 12:28:10.14 09:27:03.5 SPM 2.1 m+B&C Spec. 3300–7900 4.0 18 26 Feb. 2015, 11:18 2 × 1800
2PBC J1251.85127 12:51:44.04 51:28:04.3 3.6 12:51:44.07 51:28:05.2 CTIO 1.5 m+RC Spec. 3300–10 500 5.7 14 22 Dec. 2011, 08:28 1620
(=1RXS J125144.2512809)
2PBC J1332.17751 13:32:40.64 77:50:39.0 4.1 13:32:40.59 77:50:40.5 CTIO 1.5 m+RC Spec. 3300–10 500 5.7 14 03 Feb. 2012, 07:52 2 × 1000
2PBC J1419.2+6804 14:18:49.94 +68:04:09.9 2.0 14:18:49.91 +68:04:09.7 Cassini+BFOSC 3500-8700 4.0 12 26 Feb. 2012, 02:00 2 × 1800
2PBC J1520.20433 15:20:14.98 04:35:52.6 3.6 15:20:15.07 04:35:53.0 Cassini+BFOSC 3500–8700 4.0 12 12 Apr. 2015, 01:25 2 × 1800
2PBC J1548.53208 15:48:43.35 32:07:11.0 2.7 15:48:43.39 32:07:13.3 CTIO 1.5m+RC Spec. 3300–10 500 5.7 14 05 Apr. 2012, 08:22 2 × 1500
2PBC J1555.06225 15:54:59.25 62:24:30.0 4.2 15:54:58.95 62:24:28.3 CTIO 1.5 m+RC Spec. 3300–10 500 5.7 14 19 May. 2012, 07:14 2 × 1500
2PBC J1649.31739 16:49:20.92 17:38:40.7 3.6 16:49:21.02 17:38:40.6 SPM 2.1 m+B&C Spec. 3300–7900 4.0 18 22 Jun. 2012, 06:34 2 × 1800
2PBC J1709.72349 17:09:44.69 23:46:53.1 2.0 17:09:44.70 23:46:53.2 SPM 2.1 m+B&C Spec. 3300–7900 4.0 18 25 Jun. 2012, 05:59 2 × 1200
(=1RXS J170944.9234658)
2PBC J1742.06053 17:42:01.74 60:55:13.6 3.5 17:42:01.50 60:55:12.2 CTIO 1.5 m+RC Spec. 3300–10 500 5.7 14 26 Oct. 2011, 00:24 2 × 1200
(=1RXS J174201.5605514)
2PBC J1809.76555 18:09:52.19 65:56:11.9 3.5 18:09:52.28 65:56:13.8 CTIO 1.5 m+RC Spec. 3300–10 500 5.7 14 08 Oct. 2011, 02:32 2 × 1800
2PBC J1832.8+3124 18:32:26.20 +31:29:04.2 6.0 18:32:26.19 +31:29:04.8 TNG+DOLoReS 3700–8000 2.5 15 04 May. 2014, 02:00 3 × 1200
2PBC J1911.4+1412 19:11:24.70 +14:11:44.8 6.0 19:11:24.87U +14:11:44.9U TNG+DOLoReS 3700–8000 2.5 15 11 Apr. 2013, 03:20 2 × 1800
2PBC J2010.32522 20:10:19.74 25:23:59.8 3.6 20:10:19.76U 25:23:59.4U TNG+DOLoReS 3700–8000 2.5 15 20 Jun. 2012, 04:56 2 × 1800
(=1RXS J201020.0252356)
2PBC J2029.46146 20:29:31.08 61:49:07.7 3.6 20:29:31.23 61:49:08.7 CTIO 1.5 m+RC Spec 3300–10 500 5.7 14 22 Aug. 2011, 06:09 2 × 600
2PBC J2030.77530 20:30:41.80 75:32:41.2 3.6 20:30:41.71 75:32:43.0 CTIO 1.5 m+RC Spec 3300–10 500 5.7 14 22 Aug. 2011, 05:14 2 × 1800
2PBC J2045.9+8321 20:44:13.29 +83:19:40.1 3.6 20:44:14.22U +83:19:42.4U TNG+DOLoReS 3700–8000 2.5 15 04 Aug. 2011, 02:14 2 × 1200
2PBC J2048.3+3812 20:48:27.08 +38:11:23.5 3.6 20:48:27.06 +38:11:24.5 TNG+DOLoReS 3700–8000 2.5 15 04 Aug. 2011, 01:09 2 × 1800
(=1RXS J204826.8+381120)
2PBC J2136.3+2003 21:36:15.10 +20:02:03.4 6.0 21:36:15.31 +20:02:07.2 SPM 2.1 m+B&C Spec. 3300–7900 4.0 18 12 Jun. 2013, 08:58 2 × 1800
2PBC J2155.1+6205 21:55:15.30 +62:06:50.0 6.0 21:55:15.37 +62:06:46.4 TNG+DOLoReS 3700–8000 2.5 15 19 Sep. 2013, 04:56 2 × 1200
2PBC J2238.9+4050 22:38:56.50 +40:51:38.5 6.0 22:38:57.02 +40:51:42.0 Cassini+BFOSC 3500–8700 4.0 12 05 Nov. 2013, 21:40 2 × 1800
2PBC J2322.6+2903 23:22:45.70 +29:08:12.8 6.0 23:22:45.86 +29:08:16.2 Cassini+BFOSC 3500–8700 4.0 12 03 Dec. 2012, 17:52 2 × 1800
2PBC J2348.9+4153° 23:48:53.80 +41:54:28.0 6.0 23:48:53.46 +41:54:28.6 SPM 2.1 m+B&C Spec. 3300–7900 4.0 18 06 Dec. 2013, 03:19 2 × 1800

Notes. If not indicated otherwise, soft X-ray source coordinates were extracted from XRT (http://www.swift.ac.uk/1SXPS/ or interactive mode () in http://www.asdc.asi.it/mmia/index.php?mission=swiftmastr, with an accuracy ~6′′) or from XMM-Newton observations () with an accuracy better than 2′′. Coordinates from the 2MASS catalogue have an accuracy better than 01 whereas from USNO-A2.0 catalogue (U) have an accuracy of about 02.

(‡)

Sources for which the 99% BAT error circle was considered to search for a soft X-ray counterpart.

(≀)

Source outside the corresponding 99% XRT error circle.

(°)

Proposed soft X-ray counterpart with no detected emission above 3 keV.

(▵)

Object listed also in the 70-month Swift-BAT catalogue (Baumgartner et al. 2013).

(▴)

Object listed also in the IBIS soft γ-ray sky after 1000 INTEGRAL orbits (Baumgartner et al. 2016).

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