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Table A.2.
Periods, mean magnitudes, and amplitudes as derived from various light curves for all periodically variable white dwarfs showing only the He II line problem.
| Name | Band | Data points | Magnitude | P | Amplitude | Comment |
|---|---|---|---|---|---|---|
| [mag] | [d] | [mag] | ||||
| J0821+1739 | CSS | 275 | 19.14 | 0.384835 ± 0.000084 | 0.13 | DOZ UHE: |
| K2 | 2478 | 19.32 | 0.384878 ± 0.000006 | |||
| J1029+2540 | CSS | 470 | 17.11 | 0.282933 ± 0.000016 | 0.04 | DO UHE: |
| ZTF-g | 130 | 16.85 | 0.282932 ± 0.000007 | 0.05 | ||
| ZTF-r | 144 | 17.39 | 0.282926 ± 0.000011 | 0.04 | ||
| HE 1314+0018 | TESS | 13449 | 0.524170 ± 0.001505 | DOZ | ||
| J1512+0651 | ZTF-r | 119 | 17.56 | 0.226022 ± 0.000010 | 0.06 | |
| HS 1517+7403 | ZTF-g | 259 | 16.42 | 1.091158 ± 0.000057 | 0.05 | DOZ |
| ZTF-r | 237 | 16.97 | 1.091142 ± 0.000011 | 0.04 | DO | |
| TESS | 94063 | 1.091338 ± 0.000278 | DOZ | |||
| J1553+4832 | ZTF-g | 1203 | 18.42 | 2.928482 ± 0.000462 | 0.05 | DO |
| ZTF-r | 1261 | 18.97 | 2.928408 ± 0.000990 | 0.04 |
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