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Table 4.
Spectroscopic measurements of the blackbody temperature and the H line velocities of SN 2016iog.
| Date | Phasea | Temp. | Hα (emi.) | Hβ (emi.) | Hβ (abs.) |
|---|---|---|---|---|---|
| [days] | [K] | [km s−1] | [km s−1] | [km s−1] | |
| 2016-12-02 | +9.3 | 18100 ± 2180 | − | − | − |
| 2016-12-06 | +13.0 | 11290 ± 670 | − | 11730 | − |
| 2016-12-07 | +14.1 | 9540 ± 330 | 12210 | 11650 | − |
| 2016-12-08 | +14.9 | 10070 ± 600 | 12040 | − | 7860 ± 300 |
| 2016-12-09 | +15.9 | 9160 ± 480 | 10720 | 9340 | 7840 ± 330 |
| 2016-12-10 | +17.0 | 8930 ± 490 | 10490 | 9200 | 8650 ± 250 |
| 2016-12-22 | +29.1 | 6520 ± 330 | 10240b | 8560 | 9320 ± 500 |
| 2016-12-23 | +30.0 | 6210 ± 350 | 10110 | 9070 | 9050 ± 420 |
| 2016-12-30 | +37.0 | 5720 ± 540 | 10830 | 7770 | 8790 ± 510 |
| 2017-01-04 | +42.9 | 5950 ± 500 | 9850 | 8940 | − |
| 2017-01-07 | +45.0 | 5510 ± 620 | 10010 | 9100 | − |
| 2017-01-21 | +59.1 | − | 8650 | 7790 | − |
| 2017-01-25 | +62.9 | − | 8190 | − | − |
Notes. aPhases were calculated relative to the explosion epoch (MJD = 57715.6) in the reference frame of the observer. bThe Hα absorption line velocity at +29.1 days is 10540 ± 340 km s−1.
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