Table 5.
Locations and discovery circumstances of the 42 SNe IIn in the sample.
| SN | α (J2000.0) | δ (J2000.0) | Redshift | μ | Discovery date | E(B − V)MW |
 |
Alternative | Discovery | Inclusion in |
|---|---|---|---|---|---|---|---|---|---|---|
| (h:m:s) | (°:′:″) | (heliocentric) | (mag) | (MJD) | (mag) | (mag) | designation(s) | announcement(s) | other sample(s) | |
| PTF09tm | 13:46:55.94 | +61:33:15.6 | 0.0349 | 36.01 | 55005.31 | 0.016 | −20.1 | – | – | A10, Stoll et al. (2013) |
| PTF09uy | 12:43:55.80 | +74:41:08.1 | 0.3135 | 41.08 | 55005.33 | 0.020 | −18.1 | – | – | A15 |
| PTF09bcl | 18:06:26.78 | +17:51:43.0 | 0.0621 | 37.27 | 55034.20 | 0.081 | −21.63 | – | – | A10; A15, Stoll et al. (2013) |
| PTF10cwl | 12:36:22.06 | +07:47:38.0 | 0.0849 | 37.99 | 55268.23 | 0.019 | −17.74 | CSS100320:123622+074737 | Drake et al. (2010) | O14c; A15 |
| PTF10cwx | 12:33:16.53 | −00:03:10.6 | 0.0731 | 37.66 | 55268.24 | 0.022 | −18.71 | – | – | A10; O14c; A15, Stoll et al. (2013) |
| PTF10ewc | 14:01:59.08 | +33:50:11.6 | 0.0542 | 36.99 | 55284.33 | 0.013 | −17.76 | – | – | A15 |
| PTF10fjh | 16:46:55.36 | +34:09:34.7 | 0.0321 | 35.86 | 55296.26 | 0.021 | −21.65 | SN 2010bq | Duszanowicz (2010), Challis et al. (2010) | O14a; A15 |
| PTF10flx | 16:46:58.28 | +64:26:48.5 | 0.0674 | 37.44 | 55297.43 | 0.026 | −19.86 | – | – | A15 |
| PTF10gvd | 16:53:02.12 | +67:00:08.9 | 0.0693 | 37.50 | 55322.27 | 0.036 | −16.14 | – | – | A15 |
| PTF10gvf | 11:13:45.24 | +53:37:44.9 | 0.0809 | 37.85 | 55322.22 | 0.010 | −19.77 | – | – | O14c; O14a; A15 |
| PTF10oug | 17:20:44.79 | +29:04:25.6 | 0.1501 | 39.29 | 55391.28 | 0.037 | −18.61 | – | – | O14c; A15 |
| PTF10qwu | 16:51:10.36 | +28:18:06.2 | 0.2258 | 40.27 | 55417.21 | 0.040 | −16.03 | – | – | A15 |
| PTF10tel | 17:21:30.68 | +48:07:47.4 | 0.0349 | 36.01 | 55433.18 | 0.015 | −16.83 | SN 2010mc | Ofek (2012), Howell & Murray (2012) | O14c; O14a; A15 |
| PTF10tyd | 17:09:19.41 | +27:49:08.6 | 0.0633 | 37.32 | 55440.15 | 0.058 | −20.51 | – | – | O14c; A15 |
| PTF10vag | 21:47:18.48 | +18:07:51.5 | 0.0516 | 36.81 | 55451.16 | 0.106 | −15.75 | – | – | O14c; A15 |
| PTF10weh | 17:26:50.46 | +58:51:07.4 | 0.1379 | 39.08 | 55461.18 | 0.028 | −12.82 | – | Ben-Ami et al. (2010) | O14c; O14a; A15 |
| PTF10xgo | 21:55:57.38 | +01:19:14.1 | 0.0336 | 35.85 | 55472.29 | 0.048 | −17.54 | – | – | A15 |
| PTF10abui | 06:12:18.46 | −22:46:15.6 | 0.0516 | 36.80 | 55535.29 | 0.062 | −19.57 | – | Arcavi et al. (2010a) | A15 |
| PTF10achk | 03:05:57.54 | −10:31:21.0 | 0.0325 | 35.72 | 55545.10 | 0.056 | −20.74 | – | – | O14c; O14a; A15 |
| PTF10acsq | 08:01:33.17 | +46:45:52.5 | 0.1730 | 39.61 | 55558.36 | 0.063 | −16.85 | – | – | A15 |
| PTF11fzz | 11:10:46.68 | +54:06:18.8 | 0.0813 | 37.86 | 55730.20 | 0.009 | −14.49 | – | – | O14c; O14a; A15 |
| PTF11mpg | 22:17:36.66 | +00:36:48.4 | 0.0933 | 38.15 | 55824.26 | 0.050 | −18.58 | PS1-11aqj | Pan-STARRS Alerts | A15 |
| PTF11oxu | 03:38:34.38 | +22:32:59.4 | 0.0878 | 37.99 | 55853.30 | 0.176 | −21.62 | SN 2011jc | Drake et al. (2011) | A15 |
| PTF11qnf | 05:44:54.14 | +69:09:06.9 | 0.0148 | 34.11 | 55888.40 | 0.106 | −20.64 | – | – | A15 |
| PTF11qqj | 09:58:01.64 | +00:43:14.7 | 0.0931 | 38.18 | 55891.44 | 0.025 | −19.03 | PS1-12y | – | A15 |
| PTF11rfr | 01:42:16.98 | +29:16:25.7 | 0.0675 | 37.38 | 55906.08 | 0.042 | −18.82 | – | – | O14a; A15 |
| PTF11rlv | 12:49:34.04 | −09:20:40.5 | 0.1323 | 39.00 | 55922.50 | 0.037 | −19.79 | – | – | A15 |
| PTF12cxj | 13:12:38.68 | +46:29:06.3 | 0.0356 | 36.07 | 56033.29 | 0.010 | −19.57 | – | – | O14c; O14a; A15 |
| PTF12frn | 16:22:00.16 | +32:09:38.9 | 0.1365 | 39.07 | 56096.43 | 0.019 | −20.78 | – | – | Ganot et al. (2016) |
| PTF12glz | 15:54:53.04 | +03:32:07.5 | 0.0793 | 37.84 | 56114.22 | 0.130 | −19.76 | – | Gal-Yam et al. (2012) | O14c, Ganot et al. (2016) |
| PTF12ksy | 04:11:46.09 | −12:28:00.8 | 0.0314 | 35.66 | 56237.29 | 0.037 | −20.71 | – | – | O14c |
| iPTF13agz | 14:34:32.12 | +25:09:43.6 | 0.0571 | 37.11 | 56386.36 | 0.028 | −19.9 | – | – | O14c |
| iPTF13aki | 14:35:34.35 | +38:38:31.0 | 0.1700 | 39.59 | 56392.25 | 0.010 | −18.27 | – | This work | – |
| iPTF13asr | 12:47:28.61 | +27:04:03.6 | 0.1543 | 39.36 | 56415.27 | 0.011 | −19.57 | – | This work | – |
| iPTF13cuf | 02:04:52.97 | +14:37:59.7 | 0.2199 | 40.18 | 56516.44 | 0.041 | −16.15 | – | Arcavi et al. (2013) | – |
| iPTF14bcw | 13:48:41.18 | +35:52:17.1 | 0.1206 | 38.78 | 56803.29 | 0.009 | −15.05 | – | This work | – |
| iPTF14bpa | 15:26:59.96 | +24:41:17.5 | 0.1220 | 38.81 | 56820.21 | 0.037 | −20.78 | PS15aod | PS1 Object List | – |
| iPTF15aym | 13:26:26.67 | +55:23:43.4 | 0.0334 | 35.93 | 57168.24 | 0.012 | −19.2 | – | This work | – |
| iPTF15bky | 15:04:40.80 | +12:37:43.4 | 0.0288 | 35.66 | 57192.35 | 0.032 | −21.63 | SN 2015Z | Arbour (2015), Leonard et al. (2015) | – |
| iPTF15blp | 16:27:15.21 | +41:08:58.1 | 0.1949 | 39.91 | 57193.32 | 0.006 | −17.63 | PS15axx | PS1 Object List | – |
| iPTF15eqr | 04:01:15.67 | +33:16:58.3 | 0.0467 | 36.55 | 57361.22 | 0.354 | −20.25 | AT 2016oy, PS16qg | Young (2016) | – |
| iPTF16fb | 10:22:09.25 | +15:28:19.2 | 0.0811 | 37.87 | 57427.46 | 0.045 | −19.52 | SN 2016afj, PS16ago | Faran et al. (2016) | – |
Notes. The redshift, distance modulus μ and MW colour excess E(B − V)MW for each SN was obtained as described in Sect. 3. The mean statistical error of the heliocentric redshifts z is σz = 0.00025, but the resolution of our spectra (typically a few ×102 km s−1) suggests that σz ≈ 0.001 is a more realistic error estimate. The given discovery date (MJD = JD – 2 400 000.5) refers to the time of PTF/iPTF discovery, i.e., the epoch of the P48 image which prompted a human scanner in the PTF/iPTF project to flag the transient as a candidate SN. The host galaxy g-band absolute magnitudes (
) were obtained as described in Sect. 4.7. The majority of SNe in our sample have been included in some (or all) of the following three earlier SN IIn samples in the literature: Ofek et al. (2014c, O14c in the table), Ofek et al. (2014a, O14a in the table), and Ackermann et al. (2015, A15 in the table). The general SN II sample by Arcavi et al. (2010b, A10 in the table) and the works by Ganot et al. (2016) and Stoll et al. (2013) also included some of the SNe in our sample.
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