Open Access
Table A.1.
X-Shooter spectroscopic observations of the sample.
| Object | UT date | MJD | Phasea | S/Nb | Exposure |
|---|---|---|---|---|---|
| (days) | (days) | (s) | |||
| SN 2020xga | 20201107 | 59160.6 | 16.5 | 30.8 | 3600 |
| SN 2020abjx | 20201208 | 59191.5 | 74.5 | 22.6 | 3600 |
| SN 2018ibb | 20190110 | 58493.1 | 126.5 | 21.8 | 1800 |
| SN 2020zbf | 20201118 | 59170.8 | 28.5 | 20.8 | 2400 |
| OGLE15qz | 20151213 | 57369.1 | 18.5 | 20.0 | 2400 |
| iPTF13ajg | 20130417 | 56399.4 | 21.0 | 17.0 | 4800 |
| SN 2020rmv | 20201015 | 59137.6 | 70.3 | 16.8 | 3600 |
| SN 2021hpx | 20210508 | 59342.6 | 52.6 | 16.7 | 2400 |
| SN 2021ek | 20210116 | 59230.6 | 16.6 | 15.1 | 2400 |
| SN 2022xgc | 20221207 | 59930.6 | 63.8 | 13.8 | 3600 |
| SN 2022acch | 20221224 | 59937.8 | 27.3 | 12.6 | 2400 |
| SN 2021gch | 20210416 | 59320.1 | 18.8 | 12.3 | 1500 |
| SN 2020abjc | 20210313 | 59286.6 | 135.0 | 12.2 | 2400 |
| SN 2022abdu | 20221215 | 59928.6 | 44.7 | 8.9 | 2400 |
| LSQ12dlf | 20120912 | 56182.5 | 50.7 | 5.7 | 1300 |
| SN 2013dg | 20130626 | 56469.9 | 35.5 | 5.6 | 1300 |
| DES16C3ggu | 20170225 | 57809.0 | 23.6 | 5.1 | 4500 |
| DES16C3dmp | 20161221 | 57743.2 | 26.9 | 5.0 | 4500 |
| SN 2021fao | 20210320 | 59293.8 | 31.2 | 3.5 | 2400 |
| iPTF15cyk | 20151013 | 57308.5 | 16.6 | 3.2 | 4800 |
| DES15S2nr | 20150919 | 57284.3 | 26.3 | 3.1 | 4500 |
Notes. (a)Rest-frame days relative to the first detection. (b)In the rest-frame region of 2675 – 2875 Å.
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