Abstract We explore the Gaia DR2 relative proper motions of seven young, massive, OB type runaway candidate stars presented by Platais et al. (2018) in the 30 Doradus (30 Dor) region of the Large Magellanic Cloud (LMC). The stars are slow runaways in the tangential plane of the 30 Dor region with relative proper motions μ ≤ 0.4 m a s y r − 1 that correspond to a tangential velocity of 100 k m s − 1 with respect to their subfields, and they have angular separation from the core of the 30 Dor less than the size of the 30 Dor region. We estimated the flight times of the target stars to the young, massive cluster R136 using angular separation from the cluster and their relative proper motion with respect to the cluster. VFTS 8 and VFTS 65 are inconsistent with even an early ejection from the cluster R136 because the flight time to R136 exceeds their ages significantly. The runaways VFTS 219, VFTS 285, and VFTS 290 could be runaways from R136, as they have flight times to R136 consistent with late ejection from it and have proper motions and positions consistent with the runaway scenario from R136. VFTS 406 and VFTS 838, have direction of motions inconsistent with the R136 runaway scenario, but kinematic ages consistent with late ejection from it.

中文翻译：

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剑鱼座 30 区域失控候选恒星的研究：使用 Gaia DR2 数据

摘要 我们探索了 Platais 等人提出的七颗年轻、大质量、OB 型失控候选星的 Gaia DR2 相对自行运动。(2018) 在大麦哲伦星云 (LMC) 的 30 Doradus (30 Dor) 区域。这些恒星在 30 Dor 区域的切线平面上缓慢失控，相对自身运动 μ ≤ 0.4 masyr − 1，对应于它们的子域的切向速度为 100 kms − 1，并且它们与核心有角分离30 Dor 小于 30 Dor 区域的大小。我们使用与星团的角距及其相对于星团的相对自行估计了目标恒星到年轻的大质量星团 R136 的飞行时间。VFTS 8 和 VFTS 65 甚至与 R136 集群的早期弹射不一致，因为到 R136 的飞行时间明显超过它们的年龄。失控的 VFTS 219、VFTS 285 和 VFTS 290 可能是来自 R136 的失控，因为它们到 R136 的飞行时间与从 R136 的延迟弹射一致，并且具有与来自 R136 的失控场景一致的适当运动和位置。VFTS 406 和 VFTS 838 的运动方向与 R136 失控情景不一致，但运动年龄与从它的晚期弹射一致。