HST follow-up of four candidate dwarf satellites in the M81 group confirms them as ultra-faint dwarf galaxies with diverse structural properties, including a high Sersic index system, a highly elliptical system, and a very compact system.
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Exploring the Diversity of Faint Satellites in the M81 Group
HST follow-up of four candidate dwarf satellites in the M81 group confirms them as ultra-faint dwarf galaxies with diverse structural properties, including a high Sersic index system, a highly elliptical system, and a very compact system.