Dark Matter Substructure and Dwarf Galactic Satellites

Figure 5

The distance to which the current samples of dwarf satellite galaxies around the Milky Way are complete (dotted, solid and dashed lines correspond to somewhat different assumptions about detection limits of dwarf galaxies, see [56] for details) as a function of galaxy luminosity (absolute V-band magnitude on the bottom scale and physical luminosity in units of solar luminosity at the top scale). The points show different types of observed satellites around the Milky Way and in the Local Group. The horizonthal dotted line indicates the outer radius for satellites counts shown in the Figure 6. Note that the completeness distance of the faintest recently discovered satellites is ≲50 kpc. Adopted from [56].