Table A.1.
Information of SESNe observed in the THU sample.
| SN | R.A. | Dec. | Type | Redshifta | E(B − V)MWb | Max. B | Max. V | Peak date refs.c |
|---|---|---|---|---|---|---|---|---|
| (J2000) | (J2000) | (MJD) | (MJD) | |||||
| css141005 | 02:23:15.64 | −07:05:20.80 | IIb | 0.045 | 0.023 | ... | 56944 | G21 |
| iPTF13bvn | 15:00:00.18 | +01:52:53.5 | Ib | 0.00449 | 0.045 | 56474 | 56476 | C13,F16 |
| iPTF15eqv | 10:52:08.33 | +32:56:39.4 | Ib(Ca-rich) | 0.00529 | 0.021 | 57243 | ... | TNT,M17 |
| PSNJ0110 | 01:10:11.91 | +33:13:53.6 | IIb | 0.018 | 0.052 | ... | 57249 | SNID |
| PSNJ0123 | 01:23:24.38 | +09:25:54.5 | Ib | 0.00758 | 0.041 | ... | 56193 | SNID |
| SN 2010ln | 03:20:53.62 | +38:15:11.9 | Ib | 0.0168 | 0.219 | ... | 55521 | SNID |
| SN 2011ble | 13:34:14.69 | +37:12:34.7 | Ic | 0.0184 | 0.007 | ... | 55658 | SNID |
| SN 2011dh | 13:30:05.12 | +47:10:11.3 | IIb | 0.002 | 0.032 | 55730 | 55733 | TNT |
| SN 2011fu | 02:08:21.41 | +41:29:12.30 | IIb | 0.018489 | 0.068 | 55845 | 55847 | M15 |
| SN 2011jfe | 02:38:54.61 | +27:50:48.7 | Ic | 0.0153 | 0.152 | ... | 55922 | SNID |
| SN 2012apf | 05:00:13.72 | −03:20:51.2 | Ic-BL | 0.0121 | 0.045 | 55974 | 55976 | L15 |
| SN 2012au | 12:54:52.18 | −10:14:50.2 | Ib | 0.0045 | 0.042 | 56004 | 56006 | T13 |
| SN 2012C | 09:37:30.48 | +32:50:31.5 | Ic | 0.0145 | 0.015 | ... | 55949 | SNID |
| SN 2012cw | 10:13:47.95 | +03:26:02.6 | Ic | 0.004486 | 0.028 | ... | 56094 | SNID |
| SN 2012ej | 06:26:51.01 | +36:07:17.4 | Ic | 0.0089 | 0.089 | ... | 56174 | SNID |
| SN 2012fhe | 10:43:34.05 | +24:53:29.0 | Ic | 0.001935 | 0.029 | ... | 56070d | SNID,Z22 |
| SN 2013gee | 10:34:48.46 | +21:39:41.9 | Ic | 0.004356 | 0.020 | 56616 | 56620 | TNT |
| SN 2014ad | 11:57:44.44 | −10:10:15.7 | Ic-BL | 0.0057 | 0.039 | 56735 | 56740 | TNT,S18 |
| SN 2014as | 14:00:54.49 | +40:58:59.6 | Ic-BL | 0.012469 | 0.013 | ... | 56772 | TNT |
| SN 2014bl | 13:25:38.81 | +25:57:33.9 | Ic | 0.0377 | 0.013 | ... | 56812 | TNT |
| SN 2014Cf | 22:37:05.60 | +34:24:31.9 | Ib | 0.002722 | 0.081 | 56668 | 56670 | B14,Z25 |
| SN 2014dj | 00:57:40.18 | +43:47:34.2 | Ic | 0.018 | 0.071 | ... | 56914 | SNID |
| SN 2014ds | 08:11:16.45 | +25:10:47.4 | IIb | 0.0137 | 0.038 | ... | 56966 | Z22 |
| SN 2014eh | 20:25:03.86 | −24:49:13.3 | Ic | 0.010614 | 0.056 | 56973 | 56976 | Z22 |
| SN 2014Lf | 12:18:48.68 | +14:24:43.5 | Ic | 0.008029 | 0.034 | 56693 | 56694 | Z18 |
| SN 2015ah | 23:00:24.63 | +01:37:36.8 | Ib | 0.016 | 0.071 | ... | 57251 | SNID |
| SN 2015bi | 14:32:15.31 | +26:19:32.02 | IIb | 0.016014 | 0.017 | ... | 57411 | SNID |
| SN 2016adje | 13:25:24.12 | −43:00:57.9 | Ic | 0.001825 | 0.102 | 57431 | 57431 | S16,S24,S22,B18 |
| SN 2016ajo | 18:44:12.49 | +24:09:29.7 | Ib | 0.016 | 0.107 | ... | 57437 | SNID |
| SN 2016bau | 11:20:59.02 | +53:10:25.6 | Ib | 0.003856 | 0.015 | 57474 | 57478 | Z22 |
| SN 2016bll | 08:33:18.30 | +19:20:44.8 | Ib | 0.019 | 0.028 | ... | 57453 | SNID |
| SN 2016cce | 13:33:27.20 | +05:28:57.8 | Ic | 0.022 | 0.029 | ... | 57515 | SNID |
| SN 2016coif | 21:59:04.08 | +18:11:10.46 | Ib(BL) | 0.0036 | 0.075 | 57548 | 57552 | P18 |
| SN 2016frp | 00:21:32.54 | −05:57:24.29 | Ib | 0.027 | 0.031 | ... | 57640 | SNID |
| SN 2016G | 03:03:57.74 | +43:24:03.50 | Ic-BL | 0.0091 | 0.139 | 57409 | 57411 | TNT |
| SN 2016hkn | 02:08:34.23 | +29:14:11.10 | IIb | 0.022 | 0.053 | ... | 57693 | SNID |
| SN 2016iae | 04:12:05.53 | −32:51:44.75 | Ic | 0.003468 | 0.013 | 57708 | 57712 | P19 |
| SN 2016jdw | 13:16:19.62 | +30:40:32.67 | Ib | 0.0189 | 0.011 | 57760 | 57764 | P19 |
| SN 2016M | 07:16:37.750 | +67:53:32.30 | IIb | 0.036 | 0.037 | ... | 57404 | SNID |
| SN 2016P | 13:57:31.13 | +06:05:51.6 | Ic-BL | 0.01462 | 0.024 | 57413 | 57417 | G20 |
| SN 2017bgu | 16:55:59.47 | +42:33:36.01 | Ib | 0.0085 | 0.019 | 57816 | 57818 | TNT |
| SN 2017cxz | 17:19:19.78 | +57:53:55.80 | Ib | 0.0289 | 0.028 | ... | 57860 | SNID |
| SN 2017einf | 11:52:53.25 | +44:07:26.2 | Ic | 0.0027 | 0.019 | 57910 | 57913 | X19 |
| SN 2017giq | 23:57:54.73 | +28:30:12.0 | Ic | 0.03 | 0.075 | ... | 57993 | SNID |
| SN 2017gpnf | 3:37:44.97 | +72:31:59.00 | IIb | 0.0073 | 0.303 | 58001 | ... | B21 |
| SN 2017ifh | 06:35:03.56 | +50:26:27.90 | Ic-BL | 0.039 | 0.117 | 58074 | 58076 | TNT |
| SN 2017iro | 14:06:23.11 | +50:43:20.20 | Ib | 0.006191 | 0.016 | 58095 | 58098 | TNT |
| SN 2017iuk | 11:09:39.52 | −12:35:18.34 | Ic-BL | 0.0368 | 0.045 | 58104 | 58105 | D18 |
| SN 2017jdn | 10:23:45.51 | +53:06:20.50 | IIb | 0.0317 | 0.020 | ... | 58099 | SNID |
| SN 2018beh | 09:31:23.03 | +17:48:27.90 | Ib | 0.06 | 0.034 | 58243 | 58246 | G22 |
| SN 2018gep | 16:43:48.22 | +41:02:43.37 | Ic-BL | 0.032 | 0.009 | 58374 | 58375 | P21 |
| SN 2018gsk | 04:09:11.62 | +08:38:51.83 | Ic | 0.0116 | 0.227 | ... | 58387 | SNID |
| SN 2018ie | 10:54:01.040 | −16:01:21.72 | Ic-BL | 0.014233 | 0.060 | 58138 | ... | P19 |
| SN 2018if | 09:14:23.840 | +49:35:32.90 | Ic-BL | 0.031 | 0.012 | 58141 | 58142 | TNT |
| SN 2019ehkf | 12:22:56.130 | +15:49:33.60 | Ib | 0.005 | 0.023 | 58615 | 58616 | J20 |
| SN 2019yvr | 12:45:08.134 | −00:27:32.73 | Ib | 0.005 | 0.022 | 58854 | 58855 | K21 |
| SN 2019yz | 15:41:57.301 | +00:42:39.45 | Ic | 0.006388 | 0.101 | ... | 58516 | ZTF |
| SN 2020aaxf | 08:20:41.967 | −01:24:52.37 | IIb | 0.014 | 0.069 | 59197 | 59198 | ZTF |
| SN 2020adow | 08:33:42.262 | +27:42:43.56 | Ic-BL | 0.007505 | 0.032 | 59217 | 59219 | TNT |
| SN 2020hvp | 16:21:45.390 | −02:17:21.37 | Ib | 0.005247 | 0.140 | 58973 | 58975 | TNT |
| SN 2020oif | 12:22:54.925 | +15:49:25.05 | Ic | 0.00524 | 0.023 | 58863 | 58866 | R21 |
| SN 2020zgle | 23:28:01.150 | −02:09:53.64 | Ib | 0.0065 | 0.051 | 59178 | 59180 | ZTF |
Notes.
Redshifts are spectroscopic redshifts sourced primarily from TNS and WiseRep.
Foreground Galactic extinctions are from Schlafly & Finkbeiner (2011), as accessed via the NASA/IPAC Extragalactic Database.
Method or references for the maximum time of SNe. TNT–TNT photometry, ZTF–ZTF photometry, SNID–in SNID release version 5.0 via templates-2.0 (Blondin & Tonry 2007) and SESNe template by Liu et al. (2016), B14–Brown et al. (2014), B18–Banerjee et al. (2018), B21–Balakina et al. (2021), C13–Cao et al. (2013), D18–D’Elia et al. (2018), F16–Fremling et al. (2016), G20–Gangopadhyay et al. (2020), G21–Grayling et al. (2021), G22–Gomez et al. (2022), J20–Jacobson-Galán et al. (2020), K21–Kilpatrick et al. (2021), L15–Liu et al. (2015), M15–Morales-Garoffolo et al. (2015), M17–Milisavljevic et al. (2017), P18–Prentice et al. (2018), P19–Prentice et al. (2019), P19–Prentice et al. (2019), P21–Pritchard et al. (2021), R21–Rho et al. (2021), S16–Stritzinger et al. (2016), S18–Sahu et al. (2018), S22–Stritzinger et al. (2022), S24–Stritzinger et al. (2024), T13–Takaki et al. (2013), X19–Xiang et al. (2019), Z18–Zhang et al. (2018), Z22–Zheng et al. (2022), Z25–Zhai et al. (2025).
SN 2012fh was discovered more than 100 days after peak and photometric observations started long after peak. The peak dates obtained from light curve fitting by Zheng et al. (2022) is quite close to the first data point. So peak date is determined by SNID fitting result.
These SNe are reclassified in this work.
SN 2011bl: Original classification of SN 2011bl is SN Ib/c (Latest Supernova) but no public spectrum is available. Our SNID analysis shows that its spectrum matches well with that of the normal SN Ic 2004aw at approximately −3 days. We therefore classify it as a normal SN Ic. SN 2011jf: This object has conflicting public classifications (SN Ib-pec on WiseRep; SN Ib/c on TNS). Our spectra and a spectrum from WiseRep are consistent with the normal SN Ic PTF12gzk near maximum light, though they also show some similarity to broad-lined SNe Ic at phases around +14 days. Given that our spectra were obtained very soon after discovery, we favor a normal SN Ic classification for SN 2011jf. SN 2012fh: Public classifications for this object are discrepant (SN Ib/c on TNS; SN Ib on WiseRep). Only nebular-phase spectra are available. As shown in Fig. 15, its nebular spectral parameters are markedly offset from the distribution of SNe Ib and are instead consistent with the median of the SNe Ic distribution. We therefore reclassify it as a type Ic. SN 2013ge: Public classifications for this object are inconsistent (SN Ic on TNS; SN Ib/c on WiseRep). Drout et al. (2016) noted the possible presence of weak He I lines and classified it as SN Ib/c, although they acknowledged this identification was uncertain. On the other hand, Some other works found the spectra of SN 2013ge very similar to those of SNe Ic such as SNe 2007gr, 2017ein. We decided to follow the classification in other literatures (Shivvers et al. 2019; Shahbandeh et al. 2022; Fang et al. 2022) to classify it as a normal type Ic. SN 2016adj: This object has discrepant public classifications (SN Ib on TNS; SN IIb on WiseRep). However, a recent study by the same group responsible for the original classification report has reclassified it as a type Ic, noting that weak hydrogen lines in its spectra may originate from interaction with hydrogen-rich circumstellar material (Stritzinger et al. 2024). We therefore adopt the type Ic classification. SN 2020zgl: It is publicly classified as SN Ib-pec (TNS and WiseRep). Our SNID analysis shows a good match to normal SNe Ib, such as SN 2004gv, at comparable phases. Consequently, we classify it as a normal type Ib.
The spectroscopic data for these supernovae have been published in the following references: SN 2012ap–Liu et al. (2015), SN 2014C–Zhai et al. (2025), SN 2014L–Zhang et al. (2018), SN 2016coi–Prentice et al. (2018), SN 2017ein–Xiang et al. (2019), SN 2017gpn–Balakina et al. (2021), SN 2019ehk–Jacobson-Galán et al. (2020), SN 2020oi–Rho et al. (2021).
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