论文标题
附近二元系统GLS 67 AB的轨道溶液和动力质量
Orbital Solution and Dynamical Masses for the Nearby Binary System Gls 67 AB
论文作者
论文摘要
我们报告了附近的光谱观察结果，19.5年二元系统GLS 67 AB超过35年。我们执行了一个全球轨道解决方案，将径向速度测量与文献相结合的文献可以追溯到一个多世纪以来，以及所有其他可用的星体观察结果。后者包括测量相对位置以及河马中间数据和摄影观测值，以追踪光中心的运动。我们为$ 0.95 \ pm 0.11 $和$ 0.254 \ pm 0.019〜m _ {\ odot} $得出$ 0.95 \ pm $ dwarf的质量，以及更准确的三角差距为$ 79.08 \ pm 0.63 $ 0.63 $ MAS，该负责属于轨道的三角差异。我们提供的证据表明，Gaia DR3的视差要小得多。质量中的精度主要受到相对位置的测量值仍然很少限制。
We report spectroscopic observations of the nearby, 19.5 yr binary system Gls 67 AB spanning more than 35 yr. We carry out a global orbital solution combining our radial velocity measurements with others from the literature going back more than a century, and with all other available astrometric observations. The latter include measurements of the relative position as well as the Hipparcos intermediate data and photographic observations tracing the motion of the photocentre. We derive masses for the primary and the M dwarf secondary of $0.95 \pm 0.11$ and $0.254 \pm 0.019~M_{\odot}$, respectively, as well as a more accurate trigonometric parallax of $79.08 \pm 0.63$ mas that accounts for the orbital motion. We provide evidence suggesting that the much smaller parallax from Gaia DR3 is biased. The precision in the masses remains limited mainly by the still few measurements of the relative position.
