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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 |
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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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