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Table 2.
Light-curve parameters of AT 2019abn in each band.
| Filter | Rise rate [mag day−1] | Decline rate [mag day−1] | Peak magnitude [AB] | Time of peak [MJD] | Peak – t0 [days] |
|---|---|---|---|---|---|
| B | 0.252 ± 0.013 | 0.0264 ± 0.0008 | 18.17 ± 0.04 | 58530.4 ± 2.1 | 24.9 ± 2.1 |
| V | 0.240 ± 0.005 | 0.0184 ± 0.0002 | 17.12 ± 0.02 | 58530.4 ± 2.0 | 24.9 ± 2.0 |
| r′ | 0.265 ± 0.009 | 0.0136 ± 0.0001 | 16.59 ± 0.02 | 58529.1 ± 1.0 | 23.5 ± 1.0 |
| i′ | 0.268 ± 0.011 | 0.0102 ± 0.0001 | 16.12 ± 0.02 | 58528.6 ± 2.0 | 23.0 ± 1.0 |
| z′ | ... | 0.0081 ± 0.0002 | 15.93 ± 0.02 | 58526.9 ± 1.9 | 21.4 ± 1.9 |
| H | ... | 0.0060 ± 0.0004 | 15.73 ± 0.04 | 58527.6 ± 2.4 | 22.1 ± 2.4 |
Notes. Rise times are computed based on the first six data points (t < 9 d), before the light curve starts to turnover as it gets closer to peak. The plateau decline rates are fit between 25 and 130 days after discovery.
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