论文标题
HD 100546中多普勒翼的起源：由内部二进制伴侣产生的大规模螺旋臂
The Origin of the Doppler-flip in HD 100546: a large scale spiral arm generated by an inner binary companion
论文作者
论文摘要
与年轻恒星分离的亚弧形分离的同伴很难形象。但是，可以从它们在原星盘的灰尘和气体中产生的扰动来推断它们的存在。在这里，我们提出了一种新的解释，对球体极化观测值进行了新的解释，该观测揭示了先前检测到的HD 100546磁盘中的内部螺旋。螺旋与新检测到的12CO内部螺旋相吻合，并且先前报道的CO发射多普勒纤维，该螺旋被解释为嵌入式Protoplanet的签名。与流体动力学模型的比较表明，这种多普勒翼是螺旋形的运动学对应物，这很可能是由磁盘腔内内部伴侣产生的。
Companions at sub-arcsecond separation from young stars are difficult to image. However their presence can be inferred from the perturbations they create in the dust and gas of protoplanetary disks. Here we present a new interpretation of SPHERE polarised observations that reveal the previously detected inner spiral in the disk of HD 100546. The spiral coincides with a newly detected 12CO inner spiral and the previously reported CO emission Doppler-flip, which has been interpreted as the signature of an embedded protoplanet. Comparisons with hydrodynamical models indicate that this Doppler-flip is instead the kinematic counterpart of the spiral, which is likely generated by an inner companion inside the disk cavity.
