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Table 4
Summary of the orbital and physical parameters of GJ65 A and B.
| Parameter | Value | Ref. |
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| Parallax π (mas) | 373.70 ± 2.70 | (c) |
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| Orbital parameters: | ||
| Ω (deg) | 145.79 ± 0.32 | (a) |
| Period P (yr) | 26.284 ± 0.038 | (a) |
| T0 (yr) | 1972.115 ± 0.047 | (a) |
| a (arcseconds) | 2.0584 ± 0.0097 | (a) |
| Eccentricity e | 0.6185 ± 0.0020 | (a) |
| Inclination i (deg) | 307.82 ± 0.28 | (a) |
| ω (deg) | 283.27 ± 0.21 | (a) |
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| Masses: | ||
| mtot = mA + mB (M⊙) | 0.242 ± 0.006 | (a) |
| m B / m tot | 0.4938 ± 0.0031 | (b) |
| mA (M⊙) | 0.1225 ± 0.0043 | (a+b) |
| mB (M⊙) | 0.1195 ± 0.0043 | (a+b) |
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| Radii: | ||
| RA (R⊙) | 0.165 ± 0.006 | (a+c) |
| RB (R⊙) | 0.159 ± 0.006 | (a+c) |
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| Surface gravity: | ||
| log gA (cgs) | 5.092 ± 0.015 | (a+b+c) |
| log gB (cgs) | 5.113 ± 0.015 | (a+b+c) |
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| Rotational v sini: | ||
| A (km s-1) | 28.2 ± 2 | (a) |
| B (km s-1) | 30.6 ± 2 | (a) |
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| Metallicity: | ||
| [Fe / H] (A) (dex) | − 0.03 ± 0.20 | (a) |
| [Fe / H] (B) (dex) | − 0.12 ± 0.20 | (a) |
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| Radial velocities: | (MJD = 53 691.0375) | |
| ΔVrad(B−A) (km s-1) | + 2.323 ± 0.068 | (a) |
| Vrad(A) (km s-1) | + 37.83 ± 0.20 | (a) |
| Vrad(B) (km s-1) | + 40.29 ± 0.20 | (a) |
| Barycentric Vrad (km s-1) | + 39.04 ± 0.20 | (a+b) |
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| Galactic space velocity: | ||
| (U,V,W) (km s-1, LSR) | (–34.93, –6.88, –21.73) | (a+d) |
Notes. The adjusted data set includes the available astrometry of our UVES differential radial velocity measurement.
Reference. (a) Present work; (b) Geyer et al. (1988); (c) van Altena et al. (1995b); (d) Salim & Gould (2003).
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