Proper Motions of Dwarf Spheroidal Galaxies from Hubble Space Telescope Imaging. III: Measurement for Ursa Minor
S. Piatek, C. Pryor, P. Bristow, E. Olszewski, H. Harris, M. Mateo, D. Minniti, C. Tinney
Abstract
This article presents a measurement of the proper motion of the Ursa Minor dwarf spheroidal galaxy determined from images taken with the Hubble Space Telescope in two distinct fields.
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