Table 1.
Wide companions of Cepheids for the targets with Near (N) or Bound (B) resolved candidate companions.
| Target | ϖexp. | Period | Total | N | B | Vis. | Comment |
|---|---|---|---|---|---|---|---|
| (mas) | (d) | ||||||
| Cepheids with Bound candidates | |||||||
| TV CMa | 0.477 | 4.67 | 4 | 1 | 1 | ✓ | Tight, high probability bound companion |
| ER Car | 0.959 | 7.72 | 41 | 2 | 1 | ✓ | Very wide comoving candidate |
| CE Cas B | 0.343 | 4.48 | 15 | 1 | 1 | ✓ | Known physical Cepheid companion (CE Cas A) |
| DF Cas | 0.462 | 3.83 | 7 | 1 | 1 | ✓ | Slow PM, possible association |
| V0659 Cen | 1.287 | 5.62 | 66 | 1 | 1 | ✓ | Very wide comoving candidate |
| delta Cep | 3.755 | 5.37 | 53 | 1 | 1 | ✓ | Known physical companion (δ Cep B) |
| AX Cir | 1.917 | 5.27 | 79 | 2 | 1 | ✓ | Wide, probably bound companion |
| BP Cir | 1.700 | 2.40 | 101 | 2 | 1 | ✓ | Very wide comoving companion, possible group |
| R Cru | 1.170 | 5.83 | 49 | 1 | 1 | ✓ | Tight, probably bound companion |
| X Cru | 0.678 | 6.22 | 36 | 2 | 1 | ✓ | Wide, possibly bound companion |
| VW Cru | 0.710 | 5.27 | 22 | 1 | 1 | ✓ | Possible comoving group |
| V0532 Cyg | 0.727 | 4.68 | 19 | 1 | 1 | ✓ | Wide, probably bound companion |
| V1046 Cyg | 0.372 | 4.94 | 6 | 1 | 1 | ✓ | Tight, high probability bound companion |
| CV Mon | 0.601 | 5.38 | 27 | 3 | 2 | ✓ | High probability bound candidates |
| RS Nor | 0.487 | 6.20 | 36 | 2 | 1 | ✓ | Tight, probably bound companion |
| SY Nor | 0.429 | 12.65 | 14 | 2 | 1 | ✓ | Tight, probably bound companion |
| QZ Nor | 0.556 | 5.41 | 69 | 3 | 1 | ✓ | Wide, possible chance association |
| AW Per | 1.218 | 6.46 | 10 | 1 | 1 | ✓ | Tight bound companion |
| U Sgr | 1.669 | 6.75 | 165 | 3 | 2 | ✓ | Very wide, possible comoving cluster |
| V0350 Sgr | 1.141 | 5.15 | 57 | 2 | 1 | ✓ | High probability bound companion |
| V0950 Sco | 1.073 | 4.82 | 92 | 2 | 1 | ✓ | Likely bound candidate |
| CM Sct | 0.518 | 3.92 | 21 | 1 | 1 | ✓ | Wide comoving association |
| EV Sct | 0.556 | 4.40 | 43 | 1 | 1 | ✓ | Wide, probably bound candidate, possible group |
| Polarisα UMi) | 7.540 | 5.67 | 15 | 1 | 1 | ✓ | Known physical companion (Polaris B) |
| SX Vel | 0.490 | 9.55 | 17 | 1 | 1 | ✓ | Tight, high probability bound companion |
| CS Vel | 0.292 | 5.90 | 10 | 1 | 1 | ✓ | Possibly bound candidate and comoving group |
| DK Vel | 0.431 | 2.48 | 17 | 1 | 1 | ✓ | Wide, possibly bound candidate |
| Cepheids with Near candidates | |||||||
| FF Aql | 2.048 | 6.40 | 60 | 1 | 0 | – | PM divergence, unlikely association |
| V0916 Aql | 0.325 | 13.44 | 3 | 1 | 0 | ✓ | Tight companion, small parallax |
| eta Aql | 3.755 | 7.18 | 33 | 1 | 0 | – | PM divergence, unlikely association |
| CK Cam | 1.959 | 3.29 | 27 | 1 | 0 | – | PM divergence, unlikely association |
| Y Car | 0.695 | 3.64 | 32 | 1 | 0 | ✓ | Comoving group, possible cluster |
| UX Car | 0.710 | 3.68 | 29 | 1 | 0 | – | Very wide, unlikely association |
| UZ Car | 0.437 | 5.20 | 30 | 1 | 0 | – | Very wide, PM divergence, unlikely association |
| XY Car | 0.366 | 12.43 | 9 | 1 | 0 | – | Very wide, possible comoving star |
| EY Car | 0.446 | 2.88 | 27 | 1 | 0 | – | Tangential velocity difference, possible association |
| DD Cas | 0.322 | 9.81 | 3 | 1 | 0 | – | Tangential velocity difference, unlikely association |
| VW Cen | 0.256 | 15.04 | 5 | 1 | 0 | ✓ | Very wide, possibly comoving companion |
| XX Cen | 0.589 | 10.95 | 23 | 1 | 0 | – | PM difference, unlikely association |
| AY Cen | 0.639 | 5.31 | 45 | 1 | 0 | ✓ | Slight PM divergence, possible association |
| AV Cir | 1.802 | 3.07 | 57 | 1 | 0 | – | Very wide, unrelated field stars |
| T Cru | 1.306 | 6.73 | 45 | 1 | 0 | – | Wide, PM divergence, unlikely association |
| SU Cyg | 1.234 | 3.85 | 74 | 1 | 0 | ✓ | Probably comoving unbound companion |
| SZ Cyg | 0.419 | 15.11 | 5 | 1 | 0 | ✓ | Possible comoving companion |
| V1334 Cyg | 1.502 | 4.75 | 24 | 1 | 0 | ✓ | Probable comoving companion |
| RR Lac | 0.515 | 6.42 | 12 | 1 | 0 | – | Wide, unlikely association |
| S Nor | 1.126 | 9.75 | 104 | 2 | 0 | ✓ | Very wide, one possibly bound and one unbound |
| U Nor | 0.699 | 12.64 | 35 | 1 | 0 | – | Wide, unlikely association |
| Y Oph | 1.186 | 17.12 | 20 | 1 | 0 | ✓ | Very wide, possibly comoving candidate |
| AQ Pup | 0.312 | 30.10 | 6 | 1 | 0 | ✓ | Possible comoving companion |
| Y Sgr | 2.146 | 5.77 | 90 | 2 | 0 | ✓ | Wide, possible association |
| XX Sgr | 0.733 | 6.42 | 39 | 1 | 0 | – | Tangential velocity difference, unlikely association |
| AP Sgr | 1.287 | 5.06 | 91 | 2 | 0 | ✓ | Wide, possibly comoving candidate |
| Y Sct | 0.581 | 10.34 | 18 | 1 | 0 | – | Wide, unlikely association |
| R TrA | 1.733 | 3.39 | 66 | 1 | 0 | ✓ | Wide, uncertain companion, slight PM offset |
| LR TrA | 1.048 | 3.44 | 40 | 1 | 0 | – | Wide, unlikely association, PM difference |
Notes. The “ϖexp.” column gives their expected parallax from the renormalized period-luminosity distances by Berdnikov et al. (2000). The “Total” column gives the number of GDR2 field stars with compatible parallaxes that were examined as candidates. The “Vis” column indicates the result of a visual inspection of the field of the considered targets, with ✓ indicating a likely comoving system and – a dubious association. The observational properties and field charts of the Cepheids and their associated candidate companions are presented in Appendix A.
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