论文标题
使用ROBO-AO成像评估光谱二进制多样性
Assessing Spectroscopic-Binary Multiplicity Properties Using Robo-AO Imaging
论文作者
论文摘要
我们基于在Kitt Peak 210万望远镜的机器人自适应光学系统（ROBO-AO）中获取的0.75微米成像数据，为60个太阳能光谱二进制的60个太阳型光谱二进制物提供了高阶多重性结果。我们的对比曲线在〜1个弧形分离时表现出〜5 mag的灵敏度。我们发现总体上有62％的二进制文件的三级伴侣，但发现这部分是内部二元轨道时期的强大功能。 p_ {binary}> 30天的〜47％到p_ {binary} <= 5天的高至90％。同样，我们发现在Robo-Ao观察到的开普勒黯然失色的二进制二进制样本中，较短的时期二进制频率的增加。使用GAIA距离，我们估计每个三级伴侣的上限轨道周期，并比较该田间系统中的第三纪与二元期比与恒星形成区域的第三级期比。综上所述，这些结果提供了从三体相互作用的角动量转移的进一步证据，从而导致与三脑相关的二进制型，这些二进制于从磁场前延伸到田间年龄。
We present higher-order multiplicity results for 60 solar-type spectroscopic binaries based on 0.75 micron imaging data taken by the Robotic Adaptive Optics system (Robo-AO) at the Kitt Peak 2.1m telescope. Our contrast curves show sensitivity of up to ~5 mag at ~1 arcsecond separation. We find tertiary companions for 62% of our binaries overall, but find this fraction is a strong function of the inner binary orbital period; it ranges from ~47% for P_{binary} > 30 days to as high as ~90% for P_{binary} <= 5 days. We similarly find increasing tertiary companion frequency for shorter period binaries in a secondary sample of Kepler eclipsing binaries observed by Robo-AO. Using Gaia distances, we estimate an upper limit orbital period for each tertiary companion and compare the tertiary-to-binary period ratios for systems in the field versus those in star-forming regions. Taken all together, these results provide further evidence for angular momentum transfer from three-body interactions, resulting in tight binaries with tertiaries that widen from pre-main-sequence to field ages.
