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Magellanic Mayhem: Metallicities and Motions

  • Authors: J. Grady, V. Belokurov, and N. W. Evans

2021 The Astrophysical Journal 909 150.

  • Provider: AAS Journals

Caption: Figure 1.

The top two panels show the red giant sample of Belokurov & Erkal (2019) shown in both Magellanic Stream and Magellanic Bridge coordinates. A myriad of diffuse stellar substructure can be seen in the outer regions of the system. Most prominent is the northern spiral-like feature that was first observed by Mackey et al. (2016), alongside a host of complex thin streams in the southern portions of the outer LMC. The bottom two panels display Gaia DR2 RR Lyrae, whose selection we describe in the text. Note that the RR Lyrae distribution follows closely that of the giants, including the sharp cutoff in the disk density on the side of the LMC facing the SMC. With both stellar tracers, the old stellar bridge (Belokurov et al. 2017) is evident as the connecting feature of the two Clouds.

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