Comparing compact object distributions from mass- and presupernova core structure-based prescriptions

ABSTRACT Binary population synthesis (BPS) employs prescriptions to predict final fates, explosion or implosion, and remnant masses based on one two stellar parameters at the evolutionary cutoff imposed by code, usually near central carbon ignition. In doing this, BPS disregards integral role late-stage evolution plays in determining fate, type, mass within neutrino-driven paradigm. To highlight differences between a popular prescription, which relies only core emerging methods, rely star’s presupernova structure, we generate series of compact object distributions using three different methods for sample single binary stars computed BPASS. The first method estimates carbon–oxygen (CO) total mass. second uses structure recent bare CO-core models combined with parameterized criterion determine fate then third associates helium-core determined from public implicitly structure. We find that core-/final mass-based prescription favours lower remnants, including large gap black holes, predicts neutron star span wide range, whereas structure-based favour slightly higher holes as low 3.5 M?, NS cluster narrow range.