年轻多星中桥状双原行星盘的直接成像
Direct Imaging of Bridged Twin Protoplanetary Disks in a Young Multiple Star
摘要：
研究原行星盘的结构和演化对于理解恒星和行星形成具有重要意义。在这里，我们提出了一个相互作用的二元原行星系统的直接图像。在近红外光谱中，主星和次星周围的星盘都得到了分辨。有一个红外线发射桥连接两个磁盘和一个长的螺旋臂从环主盘延伸。数值模拟表明，这座桥对应于气体流和围绕主星和伴星旋转的气体碰撞产生的激波。新鲜物质沿旋臂流动，这与天然气从环多储层补充的理论情景一致。
英文摘要：
Studies of the structure and evolution of protoplanetary disks are important for understanding star and planet formation. Here, we present the direct image of an interacting binary protoplanetary system. Both circumprimary and circumsecondary disks are resolved in the near-infrared. There is a bridge of infrared emission connecting the two disks and a long spiral arm extending from the circumprimary disk. Numerical simulations show that the bridge corresponds to gas flow and a shock wave caused by the collision of gas rotating around the primary and secondary stars. Fresh material streams along the spiral arm, consistent with the theoretical scenarios where gas is replenished from a circummultiple reservoir.
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