Image Details
Caption: Figure 5.
A demonstration of how the radial velocities of two globular clusters alone can indicate the presence of dark matter in a galaxy, in the same manner that M. Aaronson (1983) used to show the Draco dwarf spheroidal contains dark matter. This is markedly not the case for DF9.
© 2026. The Author(s). Published by the American Astronomical Society.