在年轻的多系统UX Tauri中正在进行的飞行

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在年轻的多系统UX Tauri中正在进行的飞行

Ongoing flyby in the young multiple system UX Tauri

论文作者

Menard, F., Cuello, N., Ginski, C., van der Plas, G., Villenave, M., Gonzalez, J. -F., Pinte, C., Benisty, M., Boccaletti, A., Price, D. J., Boehler, Y., Chripko, S., de Boer, J., Dominik, C., Garufi, A., Gratton, R., Hagelberg, J., Henning, Th., Langlois, M., Maire, A. L., Pinilla, P., Ruane, G. J., Schmid, H. M., van Holstein, R. G., Vigan, A., Zurlo, A., Hubin, N., Pavlov, A., Rochat, S., Sauvage, J. -F., Stadler, E.

论文摘要

我们介绍了年轻多个系统UX Tauri的观察，以寻找情节磁盘和动态相互作用的迹象。我们获得了J和H带中的Sphere/Irdis深度微分极化图像。我们还使用了Alma Archival CO数据。从UX Tau A的磁盘中散发出的散射光。南部的螺旋形成了大型的螺旋形。南部的螺旋形成了UX Tau A和C之间的桥梁。这些螺旋，包括连接两颗恒星的桥，都有Alma看到的CO（3-2）对应物。在散射的光中检测到UX Tau C的磁盘。它比ux tau a的磁盘小得多，并且沿着不同的位置角度具有主要轴，这表明未对准。我们进行了幻影SPH流体动力学模型来解释数据。旋转磁盘的散射光螺旋，CO发射螺旋和速度模式，以及UX Tau C的磁盘的紧凑性，全部指向UX Tau A的ux tau a（大约1000年）的情况，ux tau C.

We present observations of the young multiple system UX Tauri to look for circumstellar disks and for signs of dynamical interactions. We obtained SPHERE/IRDIS deep differential polarization images in the J and H bands. We also used ALMA archival CO data. Large extended spirals are well detected in scattered light coming out of the disk of UX Tau A. The southern spiral forms a bridge between UX Tau A and C. These spirals, including the bridge connecting the two stars, all have a CO (3-2) counterpart seen by ALMA. The disk of UX Tau C is detected in scattered light. It is much smaller than the disk of UX Tau A and has a major axis along a different position angle, suggesting a misalignment. We performed PHANTOM SPH hydrodynamical models to interpret the data. The scattered light spirals, CO emission spirals and velocity patterns of the rotating disks, and the compactness of the disk of UX Tau C all point to a scenario in which UX Tau A has been perturbed very recently (about 1000 years) by the close passage of UX Tau C.

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