Ripping up a circumstellar disk During the process of star formation, a disk of gas and dust forms around the young star, controlling the accretion of more material. Once the star has formed, any leftover material in this circumstellar disk can form planets. If a binary or triple star forms at the center of the disk, theoretical models predict that tidal torques caused by their orbits can rip the disk apart, in a process known as disk tearing. Kraus et al. observed the nearby young triple-star system GW Orionis with multiple near-infrared and submillimeter telescopes, using the techniques of interferometry and polarimetry. They found evidence for multiple rings with different orientations and warping of part of the disk, both produced by disk tearing. Science, this issue p. 1233 The circumstellar disk in a nearby triple-star system has complex structures produced by disk tearing. Young stars are surrounded by a circumstellar disk of gas and dust, within which planet formation can occur. Gravitational forces in multiple star systems can disrupt the disk. Theoretical models predict that if the disk is misaligned with the orbital plane of the stars, the disk should warp and break into precessing rings, a phenomenon known as disk tearing. We present observations of the triple-star system GW Orionis, finding evidence for disk tearing. Our images show an eccentric ring that is misaligned with the orbital planes and the outer disk. The ring casts shadows on a strongly warped intermediate region of the disk. If planets can form within the warped disk, disk tearing could provide a mechanism for forming wide-separation planets on oblique orbits.

中文翻译：

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一个三星系统，有一个由圆盘撕裂形成的未对准和扭曲的星周圆盘

撕裂星周盘 在恒星形成过程中，年轻恒星周围会形成一个气体和尘埃盘，控制着更多物质的吸积。一旦恒星形成，这个星周盘中的任何剩余物质都可以形成行星。如果在圆盘的中心形成一颗双星或三重星，理论模型预测由它们的轨道引起的潮汐扭矩可以将圆盘撕裂，这个过程称为圆盘撕裂。克劳斯等人。使用干涉测量法和偏振测量法，用多个近红外和亚毫米望远镜观测了附近的年轻三重星系统 GW Orionis。他们发现了具有不同方向的多个环和磁盘部分翘曲的证据，两者都是由磁盘撕裂产生的。科学，这个问题 p。1233 附近三星系统中的星周盘具有由盘撕裂产生的复杂结构。年轻的恒星被一个由气体和尘埃组成的星周盘包围，在该盘内可能发生行星形成。多星系统中的引力会破坏圆盘。理论模型预测，如果圆盘与恒星的轨道平面不对齐，圆盘应该会翘曲并破裂成进动环，这种现象称为圆盘撕裂。我们展示了三星系统 GW Orionis 的观测结果，找到了磁盘撕裂的证据。我们的图像显示了一个与轨道平面和外盘未对齐的偏心环。该环在磁盘强烈扭曲的中间区域投射阴影。如果行星可以在扭曲的圆盘内形成，