Space Motions of the Dwarf Spheroidal Galaxies Draco and Sculptor Based on HST Proper Motions with a ∼10 yr Time Baseline

Space Motions of the Dwarf Spheroidal Galaxies Draco and Sculptor Based on HST Proper Motions with a ∼10 yr Time Baseline

We present new proper motion (PM) measurements of the dwarf spheroidal galaxies (dSphs) Draco and Sculptor using multiepoch images obtained with the Hubble Space Telescope ACS/WFC. Our PM results have uncertainties far lower than previous measurements, even those made with the same instrument. The P...

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Bibliographic Details
Main Authors:	Sohn, Sangmo Tony, Patel, Ekta, Besla, Gurtina, van der Marel, Roeland P., Bullock, James S., Strigari, Louis E., van de Ven, Glenn, Walker, Matt G., Bellini, Andrea
Other Authors:	Univ Arizona, Dept Astron
Language:	en
Published:	IOP PUBLISHING LTD 2017
Subjects:	galaxies: dwarf Galaxy: halo Galaxy: kinematics and dynamics proper motions
Online Access:	http://hdl.handle.net/10150/626180 http://arizona.openrepository.com/arizona/handle/10150/626180

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