http://arxiv.org/abs/1807.02028
We explore the Gaia DR2 proper motions of six young, main-sequence stars, members of the Large Magellanic Cloud (LMC) reported by Moni Bidin et al. (2017). These stars are located in the outskirts of the disk, between 7 and 13 degrees from the LMC’s center where there is very low H I content. Gaia DR2 proper motions confirm that four stars formed locally, in situ, while two are consistent with being expelled via dynamical interactions from inner, more gas-rich regions of the LMC. This finding establishes that recent star formation occurred in the periphery of the LMC, where thus far only old populations are known.
D. Casetti-Dinescu, T. Girard, C. Bidin, et. al.
Fri, 6 Jul 18
11/52
Comments: Accepted for publication in Astrophysical Journal Letters
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