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Hubble Space Telescope Proper Motion (HSTPROMO) Catalogs of Galactic Globular Clusters. V. The Rapid Rotation of 47 Tuc Traced and Modeled in Three Dimensions

  • Authors: A. Bellini, P. Bianchini, A. L. Varri, J. Anderson, G. Piotto, R. P. van der Marel, E. Vesperini, and L. L. Watkins

2017 The Astrophysical Journal 844 167.

  • Provider: AAS Journals

Caption: Figure 13.

Intrinsic ellipticity profile based on the best-fit model. The central region is characterized by an approximately linear behavior, as expected by the solid-body-like behavior of the rotation curve in that radial range. Some degree of flattening is still appreciable toward the boundary of the system, mostly as a result of the complex shape of the isodensity surfaces at low density.

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