Table 1.
Lens candidates with Gav ≥ 8 or with follow-up spectroscopy with ALFOSC on the NOT.
| Name | RA [deg] | Dec [deg] | r2 − r1 | Catalogue | Gav | zspec | Spectrograph | Sep. [″] | Outcome |
|---|---|---|---|---|---|---|---|---|---|
| UNIONS J0112+3307 | 18.198 | 33.132 | 0.35 | GD | 9 | 0.243 | LAMOST | 1.036 | INC |
| UNIONS J0800+4059 | 120.011 | 40.991 | 1.57 | MQ | 8 | 1.622 | SDSS | – | CONT |
| UNIONS J0805+3550 | 121.273 | 35.847 | 0.39 | GD | 9 | 1.668 | SDSS | 1.142 | INC |
| UNIONS J0840+4631 | 130.216 | 46.524 | 0.57 | MQ | 8 | 1.358 | SDSS | – | CONT |
| UNIONS J0922+4028 | 140.721 | 40.476 | 0.95 | MQ | 8.5 | 1.280 | NOT | 1.350 | INC |
| UNIONS J0926+3059 | 141.644 | 30.996 | 1.23 | MQ | 8 | 2.257 | SDSS | 2.067 | INC |
| UNIONS J0938+4216 | 144.508 | 42.268 | 0.37 | MQ | 9 | 1.705 | NOT | 0.797 | INC |
| UNIONS J0943+3532 | 145.862 | 35.544 | 0.39 | GD/MQ | 9.5 | 1.210 | NOT | 0.831 | Lens |
| UNIONS J0958+4325 | 149.656 | 43.432 | 0.89 | MQ | 8 | 0.813 | SDSS | 0.985 | INC |
| UNIONS J1006+3040 | 151.576 | 30.677 | 0.82 | GD/MQ | 8.5 | 1.345 | NOT | 0.837 | NIQ |
| UNIONS J1039+5126 | 159.841 | 51.436 | 0.03 | GD/MQ | 6.5 | 2.050 | NOT | 1.693 | NIQ |
| UNIONS J1111+3804 | 167.777 | 38.073 | 0.51 | MQ | 10 | 3.020 | NOT | 1.964 | Lens |
| UNIONS J1136+4227 | 174.086 | 42.458 | 2.05 | GD | 8.5 | 1.800 | NOT | 2.143 | NIQ |
| UNIONS J1146+3254 | 176.720 | 32.903 | 1.75 | MQ | 10 | 2.073 | NOT | 2.441 | Lens |
| UNIONS J1201+4013 | 180.329 | 40.222 | 1.72 | MQ | 9 | 1.940 | NOT | 1.609 | Lens |
| UNIONS J1219+3453 | 184.760 | 34.896 | 0.75 | MQ | 9 | 1.150 | NOT | 4.150 | NIQ |
| UNIONS J1223+3103 | 185.839 | 31.054 | 1.98 | MQ | 8.5 | 0.887 | NOT | 1.011 | INC |
| UNIONS J1325+3629 | 201.339 | 36.487 | 1.46 | GD/MQ | 7.5 | 1.210 | NOT | 0.686 | INC |
| UNIONS J1454+4146 | 223.702 | 41.777 | 1.01 | MQ | 7.5 | 1.670 | NOT | 1.414 | QP |
| UNIONS J1529+3841 | 232.262 | 38.684 | 2.27 | GD/MQ | 8 | 2.012 | SDSS | 0.918 | INC |
| UNIONS J1537+3223 | 234.254 | 32.391 | 0.05 | GD/MQ | 7.5 | 1.825 | NOT | 0.975 | NIQ |
| UNIONS J1551+3423 | 237.884 | 34.389 | 2.11 | MQ | 8 | 1.832 | SDSS | 1.189 | INC |
| UNIONS J1555+3118 | 238.762 | 31.313 | 1.11 | GD | 8 | 3.360 | NOT | 1.640 | Lens |
| UNIONS J1555+3703 | 238.997 | 37.061 | 1.69 | MQ | 8.5 | 1.700 | NOT | 0.926 | INC |
| UNIONS J1555+3813 | 238.983 | 38.226 | 0.66 | MQ | 8.5 | 2.525 | NOT | 0.749 | QP |
| UNIONS J1559+3839 | 239.816 | 38.653 | 0.75 | MQ | 9 | 1.334 | SDSS-new | 0.885 | PLens |
| UNIONS J1633+4556 | 248.287 | 45.942 | 1.70 | MQ | 8 | 1.412 | SDSS | 0.825 | INC |
| UNIONS J1655+3746 | 253.774 | 37.777 | 0.80 | MQ | 8 | – | – | 1.045 | INC |
| UNIONS J1739+4355 | 264.848 | 43.919 | 0.14 | MQ | 9 | 2.515 | NOT | 1.538 | NIQ |
| UNIONS J2335+3201 | 353.844 | 32.019 | 1.24 | MQ | 8.5 | 0.903 | SDSS | 0.620 | INC |
Notes. The flux ratio of brightest two blue point sources in r-band is denoted as r2 − r1; see also Fig. 3. The preselected quasar catalogues are denoted as ‘MQ’ for MILLIQUAS and as ‘GD’ for Gaia double detection; see Sect. 2.2. We list the average grade of the refined visual inspection as Gav. The redshifts are measured through the spectra in the ‘spectrograph’ column; see Sects. 6 and 7. The image separation is measured with light modelling. The outcomes indicate confirmed lenses as ‘Lens’, probable lenses as ‘PLens’, nearly identical quasars as ‘NIQ’, quasar pairs as ‘QP’, contaminants as ‘CONT’, and inconclusive systems as ‘INC’.
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