论文标题
GW Ori：三星级系统与其圆盘磁盘的相互作用
GW Ori: Interactions Between a Triple-star System and its Circumtriple Disk in Action
论文作者
论文摘要
GW Ori是一个层次三重系统，具有罕见的圆盘磁盘。我们提出了Atacama大毫米/亚毫米阵列（ALMA）的观测值1.3毫米尘埃连续体和12CO J = 2-1磁盘的分子气体发射。我们第一次在〜46、188和338 au中识别磁盘中的三个灰尘环，估计的尘埃质量分别为〜70-250地球质量。据我们所知，GW Ori中的外环是原月经磁盘中有史以来最大的灰尘环。我们使用灰尘连续体的可见性建模，以表明磁盘已错过了零件，最内向的灰尘环是怪异的。 CO运动学建模也提出了磁盘未对准。我们将这些子结构解释为三颗星与圆周盘之间持续动态相互作用的证据。
GW Ori is a hierarchical triple system which has a rare circumtriple disk. We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of 1.3 mm dust continuum and 12CO J=2-1 molecular gas emission of the disk. For the first time, we identify three dust rings in the disk at ~46, 188, and 338 AU, with estimated dust mass of ~70-250 Earth masses, respectively. To our knowledge, the outer ring in GW Ori is the largest dust ring ever found in protoplanetary disks. We use visibility modelling of dust continuum to show that the disk has misaligned parts and the innermost dust ring is eccentric. The disk misalignment is also suggested by the CO kinematics modelling. We interpret these substructures as evidence of ongoing dynamical interactions between the triple stars and the circumtriple disk.
