Evolution and formation of ultramassive white dwarf stars: The case for a 9Msun progenitor

Ana S. R. Antonini, Alejandra D. Romero, S. O. Kepler

We study the full evolution of a 1.313 Msun white dwarf star that descended from a 9 Msun main-sequence progenitor with an initial metallicity of Z=0.02. Using MESA r24.08.01, we c…