Table 4
Stellar ages estimated using our stellar models, τiso, and using gyrochronology, τgyro, and the probability pτ = P(τgyro>τiso).
| Star | τiso | τgyro | pτ | log (τtidal) | Notes |
| [Gyr] | [Gyr] | [yr] | |||
|
|
|||||
| 55 Cnc | 10.91 ± 1.62 | 8.10 ± 3.54 | 0.23 | 12.8 | Companion star τX> 5 Gyr. All age estimates consistent. |
| CoRoT-2 | 2.66 ± 1.62 | 0.17 ± 0.06 | 0.02 | 10.3 | τLi ≈ 0.1 Gyr, τX ≈ 0.25 Gyr, but companion τX> 5 Gyr. |
| CoRoT-4 | 2.10 ± 1.06 | 1.81 ± 1.17 | 0.39 | 14.3 | τiso consistent with τgyro but large relative error on both. |
| CoRoT-6 | 3.40 ± 1.49 | 0.35 ± 0.10 | 0.01 | 13.0 | Fast rotator. |
| CoRoT-7 | 2.92 ± 1.87 | 2.80 ± 0.82 | 0.52 | 13.1 | τiso consistent with τgyro but large relative error on both. |
| CoRoT-13 | 5.99 ± 1.40 | 2.34 ± 1.92 | 0.08 | 11.9 | Tidal spin-up? |
| CoRoT-18 | 10.69 ± 3.28 | 0.22 ± 0.08 | 0.00 | 10.2 | Tidal spin-up? |
| HAT-P-11 | 0.72 ± 0.83 | 3.89 ± 0.89 | 0.98 | 15.7 | Poor isochrone fit – helium-rich? |
| HAT-P-21 | 9.52 ± 2.26 | 1.64 ± 0.29 | 0.00 | 11.1 | τX = 1–2 Gyr, companion τX> 5 Gyr ⇒ tidal spin-up. |
| HATS-2 | 9.70 ± 2.77 | 3.10 ± 0.30 | 0.01 | 10.5 | Tidal spin-up? |
| HD 189733 | 4.75 ± 3.15 | 0.71 ± 0.09 | 0.07 | 11.9 | τX = 1–2 Gyr, companion τX> 5 Gyr ⇒ tidal spin-up. |
| HD 209458 | 2.42 ± 0.79 | 1.83 ± 0.85 | 0.29 | 12.5 | τiso consistent with τgyro but large relative error on both. |
| Kepler-17 | 1.48 ± 1.07 | 1.43 ± 0.43 | 0.53 | 10.3 | τiso consistent with τgyro but large relative error on both. |
| Kepler-30 | 4.38 ± 3.24 | 1.47 ± 0.24 | 0.22 | 19.0 | τiso consistent with τgyro but large relative error on both. |
| Kepler-63 | 3.16 ± 1.88 | 0.23 ± 0.06 | 0.02 | 15.8 | Fast rotator. |
| Qatar-2 | 15.72 ± 1.36 | 0.64 ± 0.10 | 0.00 | 10.2 | Inflated K-dwarf. |
| WASP-4 | 6.27 ± 2.34 | 2.72 ± 0.83 | 0.09 | 10.6 | Tidal spin-up? |
| WASP-5 | 5.84 ± 1.86 | 2.13 ± 0.52 | 0.05 | 10.5 | Tidal spin-up? |
| WASP-10 | 6.00 ± 4.12 | 0.66 ± 0.10 | 0.06 | 11.6 | Tidal spin-up? |
| WASP-19 | 9.95 ± 2.49 | 0.89 ± 0.12 | 0.00 | 9.5 | Tidal spin-up? |
| WASP-41 | 8.25 ± 3.59 | 1.71 ± 0.21 | 0.03 | 12.3 | Magnetically active G-type star – τiso unreliable? |
| WASP-46 | 10.03 ± 3.51 | 1.23 ± 0.20 | 0.01 | 10.3 | Tidal spin-up? |
| WASP-50 | 8.57 ± 2.86 | 1.30 ± 0.15 | 0.00 | 11.2 | Tidal spin-up? |
| WASP-69 | 15.20 ± 1.55 | 2.09 ± 0.12 | 0.00 | 13.9 | Inflated K-dwarf. |
| WASP-77 | 7.57 ± 2.53 | 1.35 ± 0.18 | 0.00 | 10.3 | Companion Vrotsini⋆⇒ age ≈ 0.4 Gyr. |
| Magnetically active G-type star – τiso unreliable? | |||||
| WASP-84 | 1.89 ± 1.61 | 0.99 ± 0.10 | 0.36 | 14.7 | Poor isochrone fit – helium-rich? |
| WASP-85 | 2.09 ± 1.37 | 1.50 ± 0.33 | 0.41 | 12.0 | τiso consistent with τgyro but large relative error on τiso. |
| WASP-89 | 12.07 ± 3.11 | 1.88 ± 0.18 | 0.00 | 10.9 | Tidal spin-up? |
Notes. A very approximate estimate for the time scale for tidal interaction between the star and the inner-most planet is given under log (τtidal). Notes include constraints on the age of the star and any companion stars from the X-ray luminosity (τX), and age constraints from the star’s surface lithium (Li) abundance τLi.
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