Supernovae producing unbound binaries and triples

ABSTRACT The fraction of stars that are in binaries or triples at the time stellar death and these systems survive supernova explosion crucial constraints for evolution models predictions gravitational wave source populations. These fractions also subject to direct observational determination. Here, we search 10 remnants containing compact objects with proper motions unbound using Gaia EDR3 new statistical methods tests false positives. We confirm one known example an binary, HD 37424 G180.0−01.7, find no other examples. Combining this our previous searches bound binaries, assuming bias favour finding interacting 72.0 per cent (52.2–86.4 cent, 90 confidence) producing neutron not explosion, 13.9 (5.4–27.2 cent) produce 12.5 (2.8–31.3 binaries. With a strong medians shift 76.0 were death, 9.5 leave 13.2 Of explosions do ${\lt}18.9{{\ \rm per\ cent}}$ can be fully triples. limits conservatively $M\gt 5\, \mathrm{M}_\odot$ companions, although mass some individual significantly stronger. At birth, progenitor PSR J0538+2817 was probably 13–$19\, star, it Roche limited, partially stripped star transferring then Type IIL IIb supernova.