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Table 11.
Summary of the PISN tests applied on SN 2018ibb.
| Test | Condition | Observation | Section | Pass | Reference |
|---|---|---|---|---|---|
| Light curve | |||||
| Rise time | 120–150 days | > 93 days | 4.2 | ? | (1, 2) |
| Decline rate | 1 mag (100 days)−1 | 1.1 mag (100 days)−1 | 4.2 | ✓ | (1, 2) |
| Peak absolute magnitude Mbol | −20 to −22.5 mag | < − 21.8 mag | 4.2 | ✓ | (1, 2) |
| Nickel mass | 10–40 M⊙ | 25–40 M⊙ | 5.2.1, 5.2.2, 5.2.3 | ✓ | (1, 2) |
| PISN template | He100–He130, | He120–He130, | 5.2.3 | ✓ | (1, 2, 3) |
| P200–P250 | P250, P250Ni34 | ||||
| Spectra | |||||
| Photospheric velocity | 7000–11 000 km s−1 | 8500 km s−1 | 4.3.2 | ✓ | (3, 4) |
| Photospheric velocity evolution | Flat | Flat | 5.3 | ✓ | Here |
| Nebular spectra | He100, He130 | He130, but blue excess | 5.2.4 | ✘ | (5) |
| [Co II] λ 1.025 μm | Not predicted | Detected | 5.2.5 | ✘ | (5) |
| Contribution from CSM interaction to the light curve and spectra | |||||
| CSM interaction | Not explored | Observed | 5.1, 4.3.4, 5.2.4 | ? | |
| Host galaxy | |||||
| Metallicity | < Z⊙/3 |
 |
4.6 | ✓ | (6) |
References.
(1) Kasen et al. (2011); (2) Kozyreva et al. (2017); (3) Gilmer et al. (2017); (4) https://2sn.org/DATA/HW01/bulk_yields.txt based on Heger & Woosley (2002); (5) Jerkstrand et al. (2016); (6) Langer et al. (2007).
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