Table 1.
Light curve parameters for the six LRNe discussed in this paper.
| Filter | JD blue max | Mag blue max | JD red max | Mag red max | Δd | Δmag (blue-red) |
|---|---|---|---|---|---|---|
| NGC 4490−2011OT1 | ||||||
| B | 2 455 798.7 ± 0.6 | 16.92 ± 0.01 | 2 455 930.6 ± 3.5 | 17.50 ± 0.01 | 131.9 ± 3.6 | −0.58 ± 0.01 |
| V | 2 455 798.2 ± 0.9 | 16.55 ± 0.05 | 2 455 937.7 ± 3.2 | 16.36 ± 0.01 | 139.5 ± 3.3 | +0.19 ± 0.05 |
| R | 2 455 798.8 ± 0.6 | 16.29 ± 0.03 | 2 455 941.3 ± 3.0 | 15.76 ± 0.01 | 142.5 ± 3.1 | +0.53 ± 0.03 |
| I | 2 455 799.0 ± 1.0 | 16.04 ± 0.04 | 2 455 941.5 ± 2.7 | 15.27 ± 0.01 | 142.5 ± 2.9 | +0.77 ± 0.04 |
| NGC 3437−2011OT1 | ||||||
| B | ∼2 455 574.7 | 19.10 ± 0.24 | 2 455 665.9 ± 14.2 | 19.32 ± 0.10 | ∼91.2 | ∼−0.22 |
| V | ∼2 455 574.7 | 18.60 ± 0.21 | 2 455 671.6 ± 3.6 | 18.33 ± 0.02 | ∼96.7 | ∼+0.27 |
| R | ∼2 455 574.7 | 17.94 ± 0.02 | 2 455 675.3 ± 6.2 | 17.76 ± 0.03 | ∼100.6 | ∼+0.18 |
| I | ∼2 455 574.7 | 17.53 ± 0.02 | 2 455 686.0 ± 9.5 | 17.00 ± 0.04 | ∼111.3 | ∼+0.53 |
| UGC 12307−2013OT1 | ||||||
| V | – | – | 2 456 481.6 ± 8.0 | 18.64 ± 0.39 | – | – |
| R | – | – | 2 456 481.9 ± 5.2 | 18.18 ± 0.10 | – | – |
| I | – | – | 2 456 499.4 ± 8.2 | 17.93 ± 0.11 | – | – |
| SN 1997bs | ||||||
| B | 2 450 559.3 ± 1.7 | 17.70 ± 0.06 | – | – | – | – |
| V | 2 450 560.5 ± 2.4 | 17.13 ± 0.06 | – | – | – | – |
| R | 2 450 562.1 ± 2.7 | 16.82 ± 0.03 | – | – | – | – |
| I | 2 450 562.4 ± 2.4 | 16.44 ± 0.03 | – | – | – | – |
| M 101−2015OT1 | ||||||
| B | – | – | 2 457 065.5 ± 5.2 | 18.84 ± 0.05 | – | – |
| V | ∼2 456 972.5 | ∼16.36 | 2 457 070.8 ± 5.8 | 17.61 ± 0.03 | ∼98.3 | ∼−1.25 |
| R | ∼2 456 972.5 | ∼16.36 | 2 457 071.4 ± 6.5 | 16.74 ± 0.05 | ∼98.9 | ∼−0.38 |
| SNhunt248 | ||||||
| B | 2 456 828.5 ± 2.2 | 17.33 ± 0.01 | 2 456 897.4 ± 2.6 | 18.59 ± 0.05 | 68.9 ± 3.4 | −1.26 ± 0.05 |
| V | 2 456 827.9 ± 1.7 | 17.03 ± 0.01 | 2 456 904.1 ± 1.8 | 17.83 ± 0.01 | 76.2 ± 2.5 | −0.80 ± 0.01 |
| R | 2 456 828.1 ± 1.5 | 16.73 ± 0.01 | 2 456 908.2 ± 1.7 | 17.47 ± 0.01 | 80.1 ± 2.3 | −0.74 ± 0.01 |
| I | 2 456 828.0 ± 1.1 | 16.66 ± 0.01 | 2 456 913.0 ± 1.4 | 17.12 ± 0.01 | 85.0 ± 1.8 | −0.46 ± 0.01 |
| AT 2017jfs | ||||||
| B | < 2 458 118.8 | < 17.96 | Slow decline | > 19.54 | – | Exceeds −1.58 |
| V | ∼2 458 113.7 | 17.34 ± 0.43 | 2 458 206.0 ± 10.3 | 18.43 ± 0.04 | ∼92.3 | −1.09 ± 0.43 |
| g | 2 458 115.3 ± 0.6 | 17.38 ± 0.03 | 2 458 169.5 ± 18.0 | 19.08 ± 0.02 | 54.2 ± 18.0 | −1.70 ± 0.04 |
| r | 2 458 116.0 ± 1.2 | 17.04 ± 0.05 | 2 458 208.0 ± 12.4 | 17.67 ± 0.01 | 92.0 ± 12.5 | −0.63 ± 0.05 |
| i | < 2 458 118.8 | < 17.46 | 2 458 208.2 ± 12.8 | 17.08 ± 0.02 | ∼92.2 | ∼+0.38 |
Notes. We report the JD epochs and the magnitudes of the first (blue) peak in cols. 2 and 3, those for the second (red) maximum in cols. 4 and 5, the time span between the two peaks in the different bands in col. 6, and the magnitude difference between the blue and red peaks in col. 7. The data of AT 2019jfs (Pastorello et al. 2019) are also reported (the Sloan-band peak magnitudes are in the AB system).
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