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A variety of stellar sources have been proposed for the origin of theshort-lived radioisotopes that existed at the time of the formation of theearliest Solar System solids, including Type II supernovae, AGB and super-AGBstars, and Wolf-Rayet star winds. Our previous adaptive mesh hydrodynamicsmodels with the FLASH2.5 code have shown which combinations of shock waveparameters are able to simultaneously trigger the gravitational collapse of atarget dense cloud core and inject significant amounts of shock wave gas anddust, showing that thin supernova shocks may be uniquely suited for the task.However, recent meteoritical studies have weakened the case for a directsupernova injection to the presolar cloud, motivating us to re-examine a widerrange of shock wave and cloud core parameters, including rotation, in order tobetter estimate the injection efficiencies for a variety of stellar sources. Wefind that supernova shocks remain as the most promising stellar source, thoughplanetary nebulae resulting from AGB star evolution cannot be conclusivelyruled out. Wolf-Rayet star winds, however, are likely to lead to cloud coreshredding, rather than to collapse. Injection efficiencies can be increasedwhen the cloud is rotating about an axis aligned with the direction of theshock wave, by as much as a factor of $\sim 10$. The amount of gas and dustaccreted from the post-shock wind can exceed that injected from the shock wave,with implications for the isotopic abundances expected for a supernova source.

astrophysical journal/the astrophysical journal

Triggering Collapse of the Presolar Dense Cloud Core and Injecting  Short-Lived Radioisotopes with a Shock Wave. II. Varied Shock Wave and Cloud  Core Parameters