Table 3.
SN type at initial classification (e.g., on TNS) and if different, our classification.
| SN name | Our | TNS | MJD of TNS | Phase (a) (days) of | Reference for initial classification |
|---|---|---|---|---|---|
| classification | classification | classification spectrum | TNS | ||
| classification | |||||
| spectrum | |||||
| SN 2023ljf | Ib | Ib | 60118.40 | −14.5 | Pellegrino et al. (2023) |
| SN 2022nyo | IIb -> Ib (b) | Ib | 59761.03 | −15.9 | Pearson et al. (2022b) |
| SN 2021ukt | IIn -> Ib (c) | IIn | 59427.58 | −14.1 | Hinkle (2021) |
| SN 2021njk | Ib | Ib-pec | 59364.41 | −11.3 | Hiramatsu et al. (2021) |
| SN 2021hen | Ib | I | 59303.54 | −8.2 | Pellegrino et al. (2021) |
| Ib | 59306.00 | −5.7 | Sollerman (2022) | ||
| SN 2020hvp | Ib | Ib | 58962.74 | −13.2 | Burke et al. (2020) |
| Ib | 58964.35 | −11.6 | Dahiwale & Fremling (2020) | ||
| SN 2019odp | Ic-bl -> Ib (d) | Ic-bl | 58718.22 | −17.0 | Brennan et al. (2019) |
| Ic-bl | 58719.89 | −15.3 | Fremling et al. (2019) | ||
| Ib | 58759.93 | 24.7 | Schweyer et al. (2024a) | ||
| SN 2016bau | Ib | Ib | 57461.97 | −16.2 | Benetti et al. (2016) |
Notes.
Based on our spectra, SN 2022nyo transitioned from a SN IIb to a SN Ib between tVmax = −13.8 and −4.1 days (see Table B.1).
Based on our spectra, SNID identified SN 2021ukt as a SN IIn at tVmax = −12.2 days, but as a SN Ib for the subsequent spectrum at tVmax = −9.1 days (see Table B.1). Nevertheless, we note that for many of its spectra, SN 2021ukt seems to have simultaneous SNe Ib- and SN IIn-like features, which has never been seen before-see Section 4.3.
Based on our spectra, SN 2019odp transitioned between a SN Ic-bl and a SN Ib between tVmax = −2.7 and 1.4 days (see Table B.1).
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