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Table 1
Wide binary systems consisting of two main-sequence cool stars with at least one exoplanet for which X-ray data has been collected.
| Star | Spec. type | B − V | Ang. sep. | Dist. |
|
MP | Porb | asem |
|
log LX | Apparent age | J∗ | Jorb | htide/hscale |
| (arcsec) | (pc) | (d) | (MJup) | (d) | (AU) | (erg s-1) | (kg m2 d-1) | (kg m2 d-1) | ||||||
|
|
||||||||||||||
| HD 189733 A | K0V | 0.93 | 11.2′′ | 19.3 | 12 | 1.14 | 2.22 | 0.031 | –4.501 | 28.2 | 1–2 Gyr | 9.3e46 | 1.3e47 | 0.008 |
| HD 189733 B | M4V | 11.2′′ | 19.3 | 26.7 | ≥5 Gyr | |||||||||
| CoRoT-2 A | G7V | 0.854 | 4′′ | 270 | 4.5 | 3.31 | 1.74 | 0.028 | –4.331 | 29.2 | 0.1–0.3 Gyr | 4.3e47 | 4.0e47 | 0.072 |
| CoRoT-2 B | K9V | 4′′ | 270 | 27.0 | ≥5 Gyr | |||||||||
| τ Boo A | F7V | 0.52 | 2.5′′ | 15.0 | 3.3 | 8.14 | 3.31 | 0.048 | –4.70 | 28.8 | 1–2 Gyr | 2.0e48 | 1.5e48 | 0.047 |
| τ Boo B | M | 2.5′′ | 15.0 | 27.65 | 1–3 Gyr | |||||||||
| υ And A | F8IV-V | 0.53 | 52′′ | 13.5 | 9.5 | 0.62 | 4.62 | 0.059 | –5.04 | 27.7 | ≥5 Gyr | 6.4e47 | 1.4e47 | 0.002 |
| υ And B | M4V | 52′′ | 13.5 | 26.45 | ≥5 Gyr | |||||||||
| 55 Cnc A | G8V | 0.87 | 81′′ | 13 | 43 | 0.026 | 0.74 | 0.015 | –5.04 | 27.07 | ≥5 Gyr | 4.6e46 | 2.3e45 | 0.005 |
| 55 Cnc B | M3-4V | 81′′ | 13 | 26.22 | ≥5 Gyr | |||||||||
Notes. The closest exoplanet is given in case of multiple exoplanets per system.
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