Spin-orbit misalignment from triple-star common envelope evolution

Abstract I study a triple star common envelope evolution (CEE) of tight binary system that is spiraling-in inside giant and launches jets spin-up the with an angular momentum component perpendicular to orbital system. This occurs when plane are inclined each other, so not along momentum. The merger stars also tilts spin direction. If red supergiant (RSG) later collapses form black hole (BH) BH final misaligned Therefore, CEE neutron (NS) or binaries other one main sequence (MSS) RSG, where power supernova (CEJSN) event, might end NS/BH-NS/BH close spin-orbit misalignment. Such can merge be gravitational waves sources. list five scenarios lead misalignments systems, two which predict spins parallel other. In case MSSs asymptotic branch outcome additional non-spherical mass loss formation ‘messy’ planetary nebula.