Table 1
Binary parameters of the DWDs in the ZTF dataset.
| Name | Porb (min) | log(fGW/Hz) | D (pc) | References |
|---|---|---|---|---|
| ZTF J1539+5027 | 6.91 | −2.317 | 2340 | Burdge et al. (2019) |
| ZTF J2243+5242 | 8.80 | −2.422 | 3778 | Burdge et al. (2020a) |
| SDSS J0651+2844 | 12.75 | −2.583 | 1265 | Brown et al. (2011) |
| ZTF J0538+1953 | 14.44 | −2.637 | 684 | Burdge et al. (2020b) |
| ZTF J0526+5934 | 20.51 | −2.789 | 831 | Burdge et al. (2020b); Kosakowski et al. (2023b) |
| PTF J0533+0209 | 20.57 | −2.790 | 1740 | Burdge et al. (2020b) |
| ZTF J2029+1534 | 20.87 | −2.797 | 2020 | Burdge et al. (2020b) |
| ZTF J0722–1839 | 23.71 | −2.852 | 928 | Burdge et al. (2020b) |
| ZTF J1749+0924 | 26.43 | −2.899 | 1550 | Burdge et al. (2020b) |
| SDSS J0822+3048 | 40.28 | −3.082 | 1291 | Brown et al. (2017) |
| ZTF J1901+5309 | 40.60 | −3.086 | 831 | Coughlin et al. (2020) |
| ZTF J0720+6439 | 45.23 | −3.133 | 921 | van Roestel et al. (2025) |
| WD J0225–6920 | 47.19 | −3.151 | 403 | Munday et al. (2023) |
| ZTF J2320+3750 | 55.25 | −3.219 | 2510 | Burdge et al. (2020b) |
| ZTF J0221+1710 | 88.25 | −3.423 | 271 | Kosakowski et al. (2023a); van Roestel et al. (2025) |
| ZTF J1356+5705 | 91.93 | −3.441 | 361 | van Roestel et al. (2025) |
| SDSS J0751–0141 | 115.22 | −3.539 | 1776 | Kilic et al. (2014) |
| ZTF J2249+0117 | 137.75 | −3.616 | 647 | van Roestel et al. (2025) |
| SDSS J1152+0248 | 143.80 | −3.635 | 645 | Hallakoun et al. (2016) |
| J2102–4145 | 144.30 | −3.636 | 163 | Kosakowski et al. (2023a); Antunes Amaral et al. (2024) |
| CSS 41177 | 167.06 | −3.700 | 441 | Parsons et al. (2011); Bours et al. (2014) |
| ZTF J1110+7445 | 173.63 | −3.717 | 514 | van Roestel et al. (2025) |
| ZTF J1758+7642 | 189.12 | −3.754 | 624 | van Roestel et al. (2025) |
| ZTF J0238+0933 | 197.03 | −3.772 | 921 | van Roestel et al. (2025) |
Notes. Binary parameters of the 24 DWDs in our ZTF dataset. Porb is the orbital period, fGW is the GW frequency and D is the distance. Spectroscopic distances from ZTF observations (Burdge et al. 2019, 2020b; Coughlin et al. 2020) are listed where available, and otherwise Gaia parallax-derived distances (Bailer-Jones et al. 2021) are given.
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