Extended Data Fig. 3: White Dwarf Mass-Luminosity distribution derived a sample of 130 white dwarfs from a homogeneous and complete sample of white dwarfs within 20pc of the Sun18.
Two unresolved double-white dwarfs (DWD), eight unresolved DWD candidates and one unresolved binary white dwarf with a main-sequence companion have been removed from this sample19. 14 stars with distances > 20 pc have also been removed. The white dots indicate the masses and V band magnitudes of the white dwarfs in this sample, and the color distribution indicates the smooth Gaussian multivariate kernel-density distribution that we have used in our analysis.
