Table 2.
Sample of 1987A-like SNe and key information used for the spectrophotometric analysis.
| SN Name | Explosion Epoch | Host Galaxy | Redshift | m-M | AV(tot) | 12+log(O/H)a | Ref. |
|---|---|---|---|---|---|---|---|
| [MJD] | Name | (z) | [mag] | [mag] | |||
| SN 1987A | 46849.8 | LMC | 0.0009 | 18.5 ± 0.1 | 0.600 | 8.37 ± 0.06 | 1,2 |
| SN 1998A | 50763.3 | IC 2627 | 0.0072 | 32.2 ± 0.3 | 0.383 | 8.68 ± 0.06 | 3 |
| SN 2000cb | 51651.1 | IC 1158 | 0.0064 | 32.7 | 0.353 | 8.45 ± 0.06 | 4 |
| SN 2004ek | 53250.5 | UGC 724 | 0.0173 | 34.4 ± 0.3 | 0.530 | 8.59 | 5 |
| SN 2004em | 53263.3 | IC 1303 | 0.0149 | 33.9 ± 0.3 | 0.298 | 8.56 ± 0.11 | 5 |
| SN 2005ci | 53512.4 | NGC 5682 | 0.0076 | 32.8 | 0.089 | 8.31 ± 0.04 | 5 |
| SN 2006V | 53748.0 | UGC 6510 | 0.0158 | 34.4 ± 0.8 | 0.090 | 8.35 ± 0.11 | 6 |
| SN 2006au | 53794.0 | UGC 11057 | 0.0099 | 33.4 ± 0.8 | 0.970 | 8.49 ± 0.12 | 6 |
| SN 2009E | 54824.5 | NGC 4141 | 0.0063 | 32.4 ± 0.4 | 0.124 | 8.22 ± 0.08 | 7 |
| SN 2009mw | 55174.5 | ESO 499-G005 | 0.0143 | 33.5 ± 0.2 | 0.167 | 8.32 | 8 |
| PTF12gcx | 56081.3 | SDSS J154417.02+095743.8 | 0.0450 | 36.5 ± 0.2 | 0.140 | 8.52 ± 0.18 | 5 |
| PTF12kso | 56175.0 | Anon. | 0.0300 | 35.6 ± 0.2 | 0.184 | ≲8.04 | 5 |
| OGLE-14 | 56861.1 | Anon. | 0.1225 | 38.8 | 0.170 | 8.36 ± 0.10 | 9 |
| SN Refsdal | 56968.9 | Anon.-Lensedb | 1.4910 | 45.2 ± 0.1 | 0.310 | 8.3 ± 0.1 | 10 |
| DES16C3cje | 57670.2 | PGC324331 | 0.0618 | 37.2 | 0.527 | < 8.19 ± 0.02 | 11 |
| SN 2018cub | 58216.3 | WISEA J150541.98+604751.4 | 0.0440 | 36.5 | 0.047 | 8.43 | 12 |
| SN 2018ego | 58248.3 | 2MASX J15525218+1958107 | 0.0375 | 36.2 | 0.144 | 7.60 | 12 |
| SN 2018imj | 58380.0 | IC0454 | 0.0132 | 33.7 ± 0.2 | 0.627 | 8.19 | 11 |
| SN 2018hna | 58411.3 | UGC 07534 | 0.0024 | 30.5 ± 0.3 | 0.028 | 8.14 ± 0.02 | 13 |
| SN 2019bsw | 58482.7 | WISEA J100506.20-162425.1 | 0.0295 | 35.6 | 0.140 | NaN | 12 |
| SN 2020faa | 58926.0 | WISEA J144709.05+724415.5 | 0.0411 | 36.2 ± 0.2 | 0.067 | 8.40 ± 0.1 | 14,15 |
| SN 2020oem | 58982.8 | WISEA J152729.72+034646.8 | 0.0424 | 36.4 | 0.139 | 8.34 | 12 |
| SN 2020abah | 59175.5 | CGCG 127-002 | 0.0301 | 35.7 | 0.065 | 8.42 | 12 |
| SN 2021zjc | 59224.4 | SDSS J111632.91+290546.5 | 0.0460 | 36.6 ± 0.1 | 0.038 | NaN | 12,16 |
| SN 2021mju | 59287.5 | WISEA J164148.29+192203.6 | 0.0283 | 35.5 | 0.210 | 8.14 | 12 |
| SN 2021skm | 59389.4 | 2MASX J16165615+2148359 | 0.0315 | NaN | 0.222 | 8.30 | 12 |
| SN 2021wun | 59425.2 | SDSS J154631.94+252545.5 | 0.0228 | 35.1 | 0.128 | 8.17 | 12 |
| SN 2021aatd | 59493.5 | GALEXASCJ005904.40-001210.0 | 0.0152 | 34.2 | 0.078 | NaN | 17 |
Notes. (1) Pun et al. (1995); (2) Catchpole et al. (1987); (3) Pastorello et al. (2005); (4) Kleiser et al. (2011); (5) Taddia et al. (2016); (6) Taddia et al. (2012); (7) Pastorello et al. (2012); (8) Takáts et al. (2016); (9) Terreran et al. (2017); (10) Kelly et al. (2016); (11) Gutiérrez et al. (2020); (12) Sit et al. (2023); (13) Singh et al. (2019); (14) Yang et al. (2021); (15) Salmaso et al. (2023); (16) Jacobson-Galán et al. (2024); (17) Szalai et al. (2024). Column 2 lists the estimated explosion epoch, computed as the midpoint between the last non-detection and the discovery date. The host galaxy name is given in Column 3 (with “Anon.” indicating anonymous hosts), followed by the redshift (z in Col. 4) and the distance modulus (m-M in Col. 5; when not reported in the cited references, values are taken from the NASA/IPAC Extragalactic Database). Columns 6 and 7 report the total visual extinction, AV (Milky Way + host contribution, following Schlafly & Finkbeiner 2011), and the oxygen abundance at the SN site [12+log(O/H)], respectively. The final column lists the main references from which these quantities, as well as the multi-band photometric data and spectra used in this work, are collected. Entries marked as “NaN” indicate that the corresponding information is not available in the literature.
Unless otherwise specified in the cited references, the oxygen abundances are derived using the N2 diagnostic (see Taddia et al. 2013).
SN Refsdal, discovered in the MACS J1149+2223 galaxy cluster, was observed as a strongly lensed SN with multiple resolved images (Kelly et al. 2016). Among the four images, this work focuses on S2, assuming a magnification factor of μ = 15 (Grillo et al. 2016).
No public spectra are available for SN 2021zj during the secondary peak phase. Classified as a young SN II by Smith et al. (2021), it showed flash ionization signatures in the early spectra.
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