The white dwarf initial-final mass relationship is shown for the 18 white dwarfs spectroscopically fit

The white dwarf initial-final mass relationship is shown for the 18 white dwarfs spectroscopically fit in this work (circles) and all previous constraints (triangles). Also shown are several semi-empirical and theoretical relations discussed in the Kalirai et al. paper. Bottom - A closer look at those white dwarfs that form the tight sequence with initial mass between 2.8 - 3.4 solar masses.