The Proper Motion of Draco II with HST Using Multiple Reference Frames and Methodologies

We present proper motion (PM) measurements for Draco II, an ultrafaint dwarf satellite of the Milky Way. These PMs are measured using two epochs of Hubble Space Telescope (HST)/Advanced Camera for Surveys imaging separated by a 7 yr temporal baseline. Measuring the PMs of low-luminosity systems is d...

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Detalles Bibliográficos

Principais autores:	Jack T. Warfield, Kevin A. McKinnon, Sangmo Tony Sohn, Nitya Kallivayalil, Alessandro Savino, Roeland P. van der Marel, Andrew B. Pace, Christopher T. Garling, Niusha Ahvazi, Paul Bennet, Roger E. Cohen, Matteo Correnti, Mark A. Fardal, Kristen. B. W. McQuinn, Max J. B. Newman, Eduardo Vitral
Formato:	Artigo
Idioma:	Inglês
Publicado:	IOP Publishing 2026-01-01
Series:	The Astrophysical Journal
Assuntos:	Dwarf spheroidal galaxies Local Group Proper motions
Acceso en liña:	https://doi.org/10.3847/1538-4357/ae29f2
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