Fig. 1.

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Survey coverage, cluster orbits, and massive star distribution in the GC. Regions covered by Libralato et al. (2021; indicated by white boxes) are superimposed on a 4.5 μm Spitzer/IRAC image (Stolovy et al. 2006). The cyan and blue lines represent the most probable prograde orbits of the Arches and Quintuplet clusters, respectively, as determined by Hosek et al. (2022). The continuous line indicates movement toward the Galactic east (in front of the plane of the sky), while the dashed line indicates movement toward the Galactic west (behind the plane of the sky). The plotted points correspond to massive stars identified by Dong et al. (2011) for which proper motion data are available. Among these stars, the green points are associated with a co-moving group, and their ID numbers correspond to their index as listed in Libralato et al. (2021). The letters A and Q and the asterisk denote the positions of the Arches and Quintuplet clusters and SgrA*.
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