Fig. 23
Dual-beam astrometry of the M-dwarf binary GJ 65: the top panel shows the astrometry from three observing epochs in 2016 and the best quadratic fit (black) to the GRAVITY data. The lower left panel displays the orbit of GJ 65 from Kervella et al. (2016) based on seeing limited and adaptive optics observations. On the lower right we plot the residuals for the best quadratic fit to the GRAVITY astrometry. The mean rms scatter is 42 μas and 64 μas in right ascension and declination, respectively.
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