Table 1
Periodic variable stars and eclipsing binaries.
| Main class sub-class | Field | Total data (overlapping fields) | Total unique stars | |||||
|---|---|---|---|---|---|---|---|---|
| BLG | GD | |||||||
| g | r | i | g | r | i | |||
| Classical Cepheid | 167 | 1840 | 2007 | 571 | ||||
| 1O | 12 | 16 | 4 | 233 | 219 | 85 | 569 | 154 |
| 1O/2O | 7 | 5 | 2 | 58 | 60 | 26 | 158 | 45 |
| 1O/2O/3O | 0 | 1 | 0 | − | − | − | 1 | 1 |
| F | 27 | 49 | 30 | 391 | 512 | 213 | 1222 | 353 |
| F/1O | 5 | 5 | 4 | 18 | 20 | 5 | 57 | 18 |
| δ Scuti | 9970 | 8315 | 18 285 | 6882 | ||||
| Multimode | 995 | 850 | 95 | 745 | 776 | 255 | 3716 | 1458 |
| Singlemode | 3810 | 3657 | 563 | 2691 | 2797 | 1051 | 14 569 | 5424 |
| Eclipsing binary | 10 216 | − | 10 216 | 5043 | ||||
| C | 708 | 887 | 210 | − | − | − | 1805 | 854 |
| CV | 1 | 1 | − | − | − | − | 2 | 1 |
| NC | 3172 | 4303 | 934 | − | − | − | 8409 | 4188 |
| RR Lyrae | 48 497 | 11 092 | 59 589 | 25 702 | ||||
| RRab | 15 051 | 16 128 | 3223 | 3360 | 3564 | 1406 | 42 732 | 18 317 |
| RRc | 6334 | 6480 | 992 | 1121 | 1136 | 381 | 16 444 | 7 223 |
| RRd | 119 | 115 | 19 | 45 | 49 | 17 | 364 | 140 |
| aRRd | 16 | 17 | 3 | 6 | 5 | 2 | 49 | 22 |
| Type II Cepheid | 1 018 | 357 | 1375 | 568 | ||||
| 1O | 2 | 2 | 0 | 0 | 1 | 0 | 5 | 2 |
| BLHer | 203 | 235 | 51 | 53 | 60 | 20 | 622 | 260 |
| RVTau | 68 | 69 | 23 | 31 | 31 | 12 | 234 | 97 |
| WVir | 142 | 160 | 42 | 48 | 56 | 15 | 463 | 192 |
| pWVir | 7 | 10 | 4 | 11 | 12 | 7 | 51 | 17 |
Notes. The number of variable stars (both main and sub-classes) collected from the OGLE-IV database that overlap with the ZTF observational fields. The two fields are the BLG and the GD. The subclass names are the same as in the OGLE-IV catalog. Many of the stars in ZTF that are observed in multiple overlapping fields have different identifiers in each field. Additionally, the stars receive a different id in every filter (g, r, i), and there are therefore more observational data than unique stars.
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