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Proper Motions and Orbits of Distant Local Group Dwarf Galaxies from a Combination of Gaia and Hubble Data

  • Authors: Paul Bennet, Ekta Patel, Sangmo Tony Sohn, Andrés del Pino Molina, Roeland P. van der Marel, Mattia Libralato, Laura L. Watkins, Antonio Aparicio, Gurtina Besla, Carme Gallart, Mark A. Fardal, Matteo Monelli, Elena Sacchi, Erik Tollerud, Daniel R. Weisz

Paul Bennet et al 2024 The Astrophysical Journal 971 .

  • Provider: AAS Journals

Caption: Figure 4.

Comparison of the absolute PM measurements for Leo I. The PM reported in this work is consistent with, though more precise than, previous estimates. HST ACS is from Sohn et al. (2013). HST WFPC2 is from Casetti-Dinescu et al. (2022). Gaia DR2 is from Gaia Collaboration et al. (2018), Fritz et al. (2018), Simon (2018), and McConnachie & Venn (2020b). Gaia DR3 is from McConnachie & Venn (2020a), Li et al. (2021), Martínez-García et al. (2021), Battaglia et al. (2022), and Pace et al. (2022). The different values reported using Gaia data are primarily the result of the different membership selection methods used by those works.

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